Bearing Knowledge

What to Consider When Sourcing a Cross Roller Slewing Bearing: A Precision Buyer’s Guide

July 24, 2025/in Slewing Bearing Knowledge /by ldbadmin

What Is a Cross Roller Slewing Bearing?

A Cross Roller Slewing Bearing is a type of slewing ring that uses cylindrical rollers arranged in alternating 90-degree directions (crossed), allowing it to simultaneously support radial, axial, and moment loads with high precision and rigidity. It is specifically designed for applications where high positioning accuracy, smooth rotation, and minimal backlash are essential.

Unlike traditional ball bearings or three-row designs used in heavy equipment, cross roller slewing bearings shine in precision engineering sectors such as robotics, medical devices, radar systems, and semiconductor production.

Structure and Key Features of Cross Roller Slewing Bearings

Core Design Elements:

Rollers arranged orthogonally to maximize load contact area

Single raceway groove, usually hardened and precision ground

High stiffness and low friction

Compact size compared to other bearing types with similar capacity

Internal or external gear options depending on the drive system

Benefits of Using Cross Roller Slewing Bearings

Superior Rotational Accuracy
Ideal for applications where angular deviation or backlash is unacceptable.

Minimal Elastic Deformation
Thanks to the cross arrangement of rollers, it handles moment loads exceptionally well.

High Load Capacity in All Directions
One compact unit handles axial, radial, and overturning loads—reducing system complexity.

Compact and Lightweight
Perfect for machines where space and weight are critical factors.

When Should You Choose a Cross Roller Slewing Bearing?

Use cross roller slewing bearings when:

High angular positioning accuracy is required

You’re building servo-controlled turntables or robotic bases

The application involves repetitive motion with minimal wear tolerance

The device operates under light to moderate load but with strict precision demands

LDB Cross Roller Slewing Bearing Solutions

LDB, a leading manufacturer and supplier, offers precision-engineered cross roller slewing bearings with the following specifications:

LDB-CR Series – Cross Roller Slewing Bearing

Outer Diameter: 200mm to 1600mm

Gear Type: Internal, external, or non-geared

Precision Class: P5 and above available upon request

Application Areas: Industrial robots, indexing tables, medical scanners, machine tools

LDB bearings are made from 50Mn or 42CrMo and undergo deep quenching for surface hardness and long-term wear resistance.

Key Considerations When Sourcing

Precision Grade and Backlash

Choose P5 or better tolerance levels for high-precision platforms

Minimize backlash through fine grinding and preloading if necessary

Raceway Hardness and Finish

LDB ensures 55–62 HRC hardness with ≤Ra0.8 surface finish on raceways

Lubrication and Sealing

For cleanroom or medical applications, use food-grade or low-volatility lubricants

Optional dust-proof seals for electronics and optics industries

Mounting Style

Most LDB models support both face-mounting and base-mounting configurations

Custom Gear Profile

LDB can customize the gear module, pressure angle, and tooth profile for integration with stepper/servo motors

Application Scenarios

Industry	Typical Application	LDB Solution
Robotics	Base joints, rotary axis	LDB-CR Series
Medical Equipment	CT/MRI scanner rotation	Low-noise, sealed model
Semiconductor	Wafer handling robots	Anti-static variant
Aerospace	Antenna pointing systems	Lightweight precision
Machine Tools	Indexing tables, measuring platforms	Preloaded low-runout unit

Price Reference for Cross Roller Slewing Bearings

The price of a cross roller slewing bearing varies based on size, precision class, gear type, and material:

Outer Diameter Range	Price Range (USD)	Gear Type
200mm–600mm	$200 – $800	Gearless/Int
600mm–1200mm	$800 – $1600	External Gear
1200mm+	$1600 – $3000+	Custom Gear

Bulk orders and OEM customization are available directly from LDB, with volume discounts and technical support included.

Why Source from LDB?

As an experienced manufacturer and supplier, LDB offers:

100% in-house production for quality control

ISO 9001 certified manufacturing

Full traceability for precision-grade bearings

Support for special materials and coatings

3–5 year warranty on precision bearings

LDB’s cross roller slewing bearings are already trusted by customers in Germany, Japan, South Korea, and the U.S. for high-tech manufacturing platforms.

Conclusion

When your application requires ultra-smooth rotation, tight dimensional tolerances, and strong rigidity in a compact form, Cross Roller Slewing Bearings are the optimal choice. From design consultation to post-delivery support, LDB offers reliable precision solutions backed by engineering expertise and global delivery capabilities.

Contact LDB today for technical support, drawings, and a quote on your next cross roller slewing bearing project.

WE Series Slew Drives: Weather-Resistant Rotation for Renewable and Industrial Applications

July 24, 2025/in Slewing Drive Knowledge /by ldbadmin

What is a WE Series Slew Drive?

The WE Series Slew Drive is an upgraded, fully enclosed slewing transmission system designed for superior environmental resilience. Unlike the SE series which balances compactness and performance, the WE (Weather Enclosed) series is engineered specifically for outdoor and harsh-condition applications—making it a favorite for renewable energy systems, construction machinery, and defense equipment.

It combines a high-precision slewing bearing with a worm gear and sealed housing, delivering torque, weather resistance, and long operational life in one integrated unit.

Key Features and Engineering Benefits

Rugged Enclosed Design (IP66 Rated)
The WE series is sealed against dust, water spray, and debris. It is ideal for environments exposed to frequent storms, humidity, or temperature extremes.

High Load and Torque Output
Thanks to a robust worm gear system, WE drives offer higher torque transmission, making them suitable for heavier payloads and larger solar panels.

Dual-Stage Worm Gear Option
Advanced models support two-stage gear design, providing improved efficiency and mechanical advantage without increasing external size.

Corrosion-Resistant Materials
Housing can be made of marine-grade aluminum or powder-coated cast steel, offering excellent corrosion protection in coastal and desert regions.

Modular Motor Integration
Mountable with hydraulic, AC, DC, or planetary motors. LDB supports plug-and-play motor kits for quick deployment.

Application Scenarios

Solar Trackers (Single and Dual Axis): Especially in high-wind or high-UV exposure locations.

Aerial Work Platforms and Scissor Lifts: Where safety and rotation precision are critical.

Mobile Cranes and Truck Lifts: For vertical installations requiring self-locking and high torque.

Offshore and Port Equipment: Maritime and deck-mounted systems where corrosion resistance is vital.

Agricultural Automation and Forestry Machinery: Where dust, rain, and temperature extremes coexist.

LDB’s WE Series Slew Drive Portfolio

LDB manufactures WE Series Slew Drives ranging from WE3 to WE25, with torque capacity from 1.2 kNm to 65 kNm. Designs are modular and allow for vertical or horizontal mounting, depending on installation needs.

Key Specifications:

Torque Output: 1,200 Nm to 65,000 Nm

Worm Gear Ratios: 30:1 to 180:1

Sealing Level: IP66 standard, optional IP67 for submerged use

Material Options: Cast steel or aluminum with anti-rust coating

Lubrication: Factory-filled grease with multi-point lubrication ports

Custom designs can be made for large-scale PV arrays, heliostat fields, or military-grade remote sensing platforms.

Price, Supplier, and Manufacturer Insights

LDB is a globally trusted manufacturer and supplier of precision slewing drive systems, including the WE Series. Our worm gear designs are built to ISO and CE standards, with advanced heat treatment and gear grinding.

Price Factors:

Drive size and torque requirements

Gear stage (single or dual worm)

Enclosure material and corrosion protection

Optional motor packages and mounting orientation

Typical Price Range: USD $250 – $4,500 depending on the unit size, protection level, and configuration.

Quotes, CAD drawings, and motor integration advice are available via www.ldb-bearing.com, with engineering assistance offered worldwide.

Why Choose LDB for WE Series Drives?

Purpose-built for harsh environmental conditions

In-stock units for solar, crane, and marine sectors

High-speed production with custom gear options

Global supply chain and on-site commissioning support

LDB’s WE Series Slew Drives are currently powering solar farms in Southeast Asia, water cranes in Europe, and defense radars in the Middle East.

Conclusion

For engineers and integrators needing high-torque, sealed slewing systems, the WE Series from LDB offers a weather-ready solution. With long-term performance and modular integration, LDB delivers reliable, field-proven rotation. Whether you’re in the desert, at sea, or on a mountaintop—trust LDB as your supplier and manufacturer of weather-resistant drive technology.

VE Series Slew Drives: A Vertical Mounting Solution for Space-Constrained Applications

July 24, 2025/in Slewing Drive Knowledge /by ldbadmin

What Is a VE Series Slew Drive?

The VE Series Slew Drive—short for “Vertical Enclosed”—is a fully enclosed worm gear slewing unit engineered specifically for vertical axis mounting. With a compact profile, high torque density, and weather-resistant casing, the VE series is ideal for solar trackers, vertical booms, robotic arms, and directional antennas that require upright rotation without sacrificing reliability.

What sets VE series apart from standard slew drives is its optimized vertical mounting configuration. This means the housing, seals, and internal geometry are reinforced to manage gravity-affected loads and maintain performance over long-term vertical operation.

Key Features of VE Series Slew Drives

Vertical Axis Compatibility

VE drives are purpose-built for installation where the rotational plane is parallel to the ground. This makes them ideal for vertical tilting solar systems, signboard pivots, and telescoping structures.

Fully Sealed Enclosure

With IP65 or higher ingress protection, VE drives feature:

Aluminum or alloy steel housings

Reinforced shaft sealing

Anti-rust coatings and internal grease channels

This ensures reliability in dusty, humid, or corrosive outdoor environments.

Self-Locking Worm Gear System

The worm drive mechanism provides mechanical self-locking, meaning the load can be held in position without external braking—critical for safety and energy efficiency.

Motor Integration Options

VE drives are compatible with:

DC brushed/brushless motors

AC gearmotors

Planetary reducers or servos

They support flexible mounting configurations for OEMs across industries.

Typical Use Cases

Application	Role of VE Series Drive
Vertical Solar Trackers	Tilt adjustment for concentrated PV systems
Signage & Billboards	Rotation and wind deflection mechanisms
Military Radar Systems	Directional scanning and stabilization
Mobile Robot Platforms	Sensor mast rotation, vertical articulation
Weather Stations	Anemometer and antenna control

LDB’s VE Series Slew Drive Portfolio

As a trusted global supplier and manufacturer, LDB provides a comprehensive range of VE drives from VE3 to VE25, with custom engineering available upon request.

Key Specs:

Output Torque: 0.5 kNm to 35 kNm

Reduction Ratio: 30:1 to 100:1

Operating Temperature: -40°C to +70°C

Standard Mount: Vertical face bolt circle

Rotation Angle: 0°–360° (continuous or limited)

All VE models are factory-sealed, greased, and tested under load for guaranteed performance.

Price Range and Configuration Costs

Factors Affecting Price:

Worm gear module and backlash class

Motor mount type and adapter configuration

Housing material (cast aluminum vs. steel)

Corrosion resistance and coating type

Typical Price Range: USD $280 – $2,800 per unit
Bulk pricing and customized features may adjust this range.

LDB offers quick quote turnaround and pre-sale engineering support at www.ldb-bearing.com.

LDB’s Engineering Edge

Finite Element Analysis (FEA) for custom torque ratings

CAD-ready models for quick system integration

Compact packaging for low-profile installations

Long-life sealing system for outdoor and marine conditions

All products come with technical documentation and optional DNV, CE, or solar certification (TUV, UL, etc.) as needed.

Why Choose LDB’s VE Series?

20+ years of slewing system design and manufacturing

Integrated production from forging to final assembly

Global logistics and multilingual support

Performance guarantees with accelerated life testing

LDB VE slew drives are in use across defense, clean energy, telecommunications, and environmental monitoring applications worldwide.

Installation and Maintenance Guidelines

Ensure perpendicularity of mounting surface for best gear alignment

Use torque-limiting bolts and star-pattern fastening

Monitor ambient conditions for re-greasing intervals (3–12 months)

Avoid load shocks during commissioning to protect the worm interface

Conclusion

When vertical space is limited and performance is non-negotiable, VE Series Slew Drives offer the optimal combination of power, protection, and precision. Their design is tailored to meet the demands of upright rotational mechanisms under challenging conditions.

LDB’s VE series reflects our commitment to advanced engineering and application-specific solutions. From desert solar trackers to urban surveillance systems, LDB helps your equipment turn smart, stable, and strong.

Explore VE options or connect with an engineer today at www.ldb-bearing.com.

VE Series Slew Drives: Vertical Mounting Performance with Built-in Efficiency

July 24, 2025/in Slewing Drive Knowledge /by ldbadmin

What is a VE Series Slew Drive?

The VE Series Slew Drive is a specialized rotary drive solution designed for vertical installation. Featuring a fully enclosed housing and integrated worm gear system, the VE (Vertical Enclosed) series is optimized for applications where the drive axis must remain upright, such as tower-top trackers, vertical axis wind turbines, and vertical conveyors.

By incorporating high-torque worm gears and slewing bearings in a sealed configuration, VE drives provide long-term performance, safety, and torque retention in vertical orientation systems.

Unique Design Features and Benefits

Vertical Orientation Optimization
Engineered for gravity-sensitive applications, the VE series is structurally reinforced to operate upright without deformation or gear slippage.

Self-Locking Worm Drive
The worm gear prevents back-driving, enhancing safety in vertical lifts and hoists. It also ensures position holding without additional brakes.

IP66 Enclosure
The sealed cast housing resists dust, rain, and salt fog, extending product life in marine and industrial environments.

High Axial Load Support
VE drives are designed to carry downward forces effectively, making them suitable for load-bearing vertical installations.

Multi-Motor Compatibility
VE drives can be paired with hydraulic motors, DC motors, and AC servos depending on user preference and control needs.

Application Scenarios

Tower-Top Vertical Solar Trackers: Trackers that rotate along the vertical pole for seasonal tilt or azimuth.

Vertical Axis Wind Turbines (VAWTs): Supporting the rotation and alignment of wind blades around vertical shafts.

Vertical Lifts and Hoists: Industrial and warehouse lifting systems with vertical drive requirements.

Maritime Cranes and Deck Equipment: Rotational systems mounted in upright orientation.

Heavy-Duty Display Systems: LED or camera towers requiring stable, upright rotation.

LDB’s VE Series Slew Drive Solutions

LDB’s VE Series comes in sizes ranging from VE3 to VE18, with torque capacities engineered specifically for vertical thrust loads and axial torque retention. Housing materials can be selected based on application (standard cast iron or marine-grade aluminum).

Technical Specs:

Torque Range: 1.0 kNm to 45.0 kNm

Gear Ratios: 30:1 to 120:1

Seal Rating: IP66 as standard, IP67 optional

Gear Material: Carburized alloy steel with induction hardening

Lubrication: Long-life synthetic grease with optional auto-lube fittings

Customization is available for flange orientation, bolt pattern, color coatings, and gearbox ratios.

Price, Supplier, and Manufacturer Overview

As a trusted manufacturer and global supplier, LDB delivers VE Series Slew Drives to industries ranging from clean energy to marine logistics.

Pricing Factors:

Torque rating and gear ratio

Enclosure material and sealing level

Custom motor or encoder integration

Mounting pattern and environmental coating

Typical Price Range: USD $300 to $4,000 depending on size and configuration.

LDB provides global support, including CAD documentation, pre-assembly, and international shipping. Clients can contact LDB directly via www.ldb-bearing.com for pricing and design support.

Why Choose LDB VE Drives?

Engineered for vertical loads and secure positioning

Field-tested in solar towers and port automation

In-house motor integration and testing

Available with dual-output or encoder-ready interfaces

LDB’s VE Series has been adopted in utility-scale vertical trackers in North America, crane systems in Southeast Asia, and automated logistics hubs in Europe.

Conclusion

VE Series Slew Drives provide dependable vertical mounting performance with superior protection, torque, and efficiency. With LDB’s experience as a global supplier and precision manufacturer, your vertical motion challenges are met with confidence, reliability, and engineering precision.

Three-Row Roller Slewing Bearings: Heavy-Duty Rotation for Maximum Load Performance

July 24, 2025/in Slewing Bearing Knowledge /by ldbadmin

What Is a Three-Row Roller Slewing Bearing?

A three-row roller slewing bearing is a high-load capacity bearing that consists of three separate raceways, each with its own roller set—one for axial loads, one for radial loads, and one for tilting moments. This design allows the loads to be distributed across three rows of rollers, significantly increasing load capacity and rigidity compared to single-row or double-row designs.

Three-row slewing bearings are commonly used in ultra-heavy-duty applications such as harbor cranes, offshore drilling platforms, ladle turrets, bucket wheel excavators, and wind turbine yaw systems.

Key Advantages of Three-Row Roller Slewing Bearings

Extreme Load Carrying Capacity

Each roller row is optimized for a specific load type, which ensures maximum utilization of the bearing’s internal structure. This makes it the preferred choice for equipment that endures continuous high stress.

High Stability and Rigidity

The separated load paths minimize raceway deformation and provide strong resistance against overturning moments, enabling precise and safe rotation under challenging conditions.

Extended Service Life

Due to even stress distribution and optimized material usage, these bearings offer improved fatigue life and durability—even under dynamic loads and variable speeds.

Versatility in Harsh Environments

Engineered with heavy sealing systems and surface treatments, they perform reliably in marine, mining, and steel plant conditions with exposure to heat, dust, and corrosive media.

Where Are They Used?

Industry	Equipment
Port Logistics	Container cranes, ship loaders
Mining & Excavation	Bucket wheel excavators, stackers
Offshore Oil & Gas	Pipe handling equipment, drilling platforms
Metallurgy	Ladle turrets, slab turning devices
Wind Power	Large yaw systems for offshore turbines

LDB’s Three-Row Slewing Bearing Portfolio

LDB is a top-tier manufacturer and global supplier of three-row roller slewing bearings, offering standard and custom-engineered solutions for large-scale equipment.

Product Specifications:

Outer diameter range: 800 mm – 5000 mm

Roller diameters: customized per application

Raceway precision: CNC-ground hardened steel

Gear types: external gear, internal gear, or gearless

Sealing: double-lip contact seals with grease retention

Surface treatment: black oxide, phosphate, or epoxy painting

All bearings are factory-lubricated and tested under simulated load conditions.

Typical Pricing and Considerations

Three-row slewing bearings involve higher raw material and machining costs due to their size and complexity. Pricing varies with:

Size and raceway design

Gear module and tooth hardness

Seal grade and coating requirement

Additional testing or documentation (e.g., ABS, DNV)

Typical Price Range: USD $2,000 – $20,000 per unit
For specialized offshore or certified products, costs may exceed this range.

To get a tailored quote, visit www.ldb-bearing.com.

Engineering & Customization Services

LDB offers full technical support from design to deployment:

Load simulation and life prediction (L10h method)

Material selection and gear customization

Bolt pattern optimization for heavy bases

Special packaging for offshore or export use

Clients receive full documentation including 2D/3D drawings, heat treatment certificates, and inspection reports.

Why Choose LDB?

Decades of experience in heavy-equipment bearings

In-house forging, heat treatment, and assembly

Exported to 40+ countries for major EPC and OEM projects

Flexible lead times and responsive technical team

LDB’s three-row roller slewing bearings are trusted by global manufacturers of cranes, excavators, and renewable energy systems.

Installation Tips

Ensure full support surface under bearing

Apply uniform torque across all mounting bolts

Use calibrated torque tools and recheck tension after 100 hours

Re-grease according to duty cycle and environmental exposure

Conclusion

Three-row roller slewing bearings are the ultimate choice for ultra-heavy load applications where safety, strength, and reliability cannot be compromised. Their robust construction and load-specialized raceways make them essential for mega-projects worldwide.

LDB delivers these high-capacity bearings with complete technical assurance, backed by global service and precision manufacturing. Let us power your next heavy-duty innovation—start at www.ldb-bearing.com.

Three-Row Roller Slewing Bearings: Heavy-Duty Rotation for Maximum Load Performance

What Is a Three-Row Roller Slewing Bearing?

A three-row roller slewing bearing is a high-load capacity bearing that consists of three separate raceways, each with its own roller set—one for axial loads, one for radial loads, and one for tilting moments. This design allows the loads to be distributed across three rows of rollers, significantly increasing load capacity and rigidity compared to single-row or double-row designs.

Three-row slewing bearings are commonly used in ultra-heavy-duty applications such as harbor cranes, offshore drilling platforms, ladle turrets, bucket wheel excavators, and wind turbine yaw systems.

Key Advantages of Three-Row Roller Slewing Bearings

Extreme Load Carrying Capacity

Each roller row is optimized for a specific load type, which ensures maximum utilization of the bearing’s internal structure. This makes it the preferred choice for equipment that endures continuous high stress.

High Stability and Rigidity

The separated load paths minimize raceway deformation and provide strong resistance against overturning moments, enabling precise and safe rotation under challenging conditions.

Extended Service Life

Due to even stress distribution and optimized material usage, these bearings offer improved fatigue life and durability—even under dynamic loads and variable speeds.

Versatility in Harsh Environments

Engineered with heavy sealing systems and surface treatments, they perform reliably in marine, mining, and steel plant conditions with exposure to heat, dust, and corrosive media.

Where Are They Used?

Industry	Equipment
Port Logistics	Container cranes, ship loaders
Mining & Excavation	Bucket wheel excavators, stackers
Offshore Oil & Gas	Pipe handling equipment, drilling platforms
Metallurgy	Ladle turrets, slab turning devices
Wind Power	Large yaw systems for offshore turbines

LDB’s Three-Row Slewing Bearing Portfolio

LDB is a top-tier manufacturer and global supplier of three-row roller slewing bearings, offering standard and custom-engineered solutions for large-scale equipment.

Product Specifications:

Outer diameter range: 800 mm – 5000 mm

Roller diameters: customized per application

Raceway precision: CNC-ground hardened steel

Gear types: external gear, internal gear, or gearless

Sealing: double-lip contact seals with grease retention

Surface treatment: black oxide, phosphate, or epoxy painting

All bearings are factory-lubricated and tested under simulated load conditions.

Typical Pricing and Considerations

Three-row slewing bearings involve higher raw material and machining costs due to their size and complexity. Pricing varies with:

Size and raceway design

Gear module and tooth hardness

Seal grade and coating requirement

Additional testing or documentation (e.g., ABS, DNV)

Typical Price Range: USD $2,000 – $20,000 per unit
For specialized offshore or certified products, costs may exceed this range.

To get a tailored quote, visit www.ldb-bearing.com.

Engineering & Customization Services

LDB offers full technical support from design to deployment:

Load simulation and life prediction (L10h method)

Material selection and gear customization

Bolt pattern optimization for heavy bases

Special packaging for offshore or export use

Clients receive full documentation including 2D/3D drawings, heat treatment certificates, and inspection reports.

Why Choose LDB?

Decades of experience in heavy-equipment bearings

In-house forging, heat treatment, and assembly

Exported to 40+ countries for major EPC and OEM projects

Flexible lead times and responsive technical team

LDB’s three-row roller slewing bearings are trusted by global manufacturers of cranes, excavators, and renewable energy systems.

Installation Tips

Ensure full support surface under bearing

Apply uniform torque across all mounting bolts

Use calibrated torque tools and recheck tension after 100 hours

Re-grease according to duty cycle and environmental exposure

Conclusion

Three-row roller slewing bearings are the ultimate choice for ultra-heavy load applications where safety, strength, and reliability cannot be compromised. Their robust construction and load-specialized raceways make them essential for mega-projects worldwide.

LDB delivers these high-capacity bearings with complete technical assurance, backed by global service and precision manufacturing. Let us power your next heavy-duty innovation—start at www.ldb-bearing.com.

Three-Row Roller Slewing Bearings: The Ultimate Load-Bearing Powerhouse

July 24, 2025/in Slewing Bearing Knowledge /by ldbadmin

What is a Three-Row Roller Slewing Bearing?

A Three-Row Roller Slewing Bearing is a high-capacity rotational bearing system that features three separate rows of rollers—each row designed to carry different types of load. Unlike single or double-row ball bearings, this design separates axial, radial, and tilting moment loads across three distinct paths, dramatically increasing the load-bearing capacity, stiffness, and operational safety.

These bearings are the largest and most robust slewing rings available in the industry and are widely used in heavy-duty applications that demand uncompromising strength and reliability.

Design Advantages

Triple-Path Load Segregation
Each row of rollers handles a specific load: axial, radial, or moment. This optimized load distribution allows for safe operation under extreme mechanical stress.

Large Contact Areas
Rollers offer line contact instead of point contact like ball bearings, which reduces stress concentration and increases wear resistance.

High Stiffness and Stability
The three-row structure significantly boosts system stiffness, minimizing deflection even under high load or dynamic conditions.

Wide Diameter Range
Due to their robust structure, Three-Row Roller Bearings are available in large diameters, often exceeding 10 meters, to support massive machines.

Gear and Non-Gear Variants
Options include external gear, internal gear, or no gear, supporting various torque transmission needs.

Where Are They Used?

Bucket Wheel Excavators: Massive radial and axial loads in continuous material removal.

Ship Cranes and Offshore Platforms: Extreme moment and vibration resistance in marine conditions.

Radar Antennas and Large Turntables: Precise yet heavy-duty rotation under dynamic loads.

Steel Mills and Rotary Kilns: High-temperature, continuous-duty installations.

Tunnel Boring Machines: Demanding torque and load demands in harsh underground environments.

LDB’s Three-Row Roller Slewing Bearings

LDB Bearing, a globally recognized manufacturer, offers a wide selection of Three-Row Roller Slewing Bearings engineered for critical tasks. Each bearing is manufactured in LDB’s ISO-certified facilities using high-strength alloy steel (42CrMo or 50Mn) and roller elements made of GCr15 precision steel.

LDB Features:

Outer Diameter Range: 1000 mm to over 10,000 mm

Load Rating: Over 10 million Nm tilting moment capacity in custom models

Gear Treatment: Induction hardening and CNC gear cutting for high torque transfer

Sealing: Multi-lip seals for water, dust, and chemical protection

Lubrication: Multi-point grease channels with optional auto-lube systems

LDB also offers custom tooth profiles, bolt hole arrangements, and anti-corrosion coatings to meet industry-specific requirements.

Price, Supplier, and Manufacturer Insights

As a premier supplier and manufacturer, LDB provides comprehensive solutions for industries that rely on ultra-heavy-duty slewing systems.

Pricing Factors Include:

Outer diameter and number of rollers

Gear design and torque requirements

Operational environment (e.g., marine, underground)

Custom sealing, mounting, and lubrication systems

Typical Price Range: USD $5000 to $50,000+ depending on dimensions and load capacity.

All price inquiries are handled directly by LDB’s engineering team via www.ldb-bearing.com, where clients can submit 3D CAD files, request test reports, or consult on long-term bulk procurement.

Why Heavy Machinery OEMs Choose LDB

Over 20 years of field-proven design experience

Gear shaping accuracy to DIN 3960/61 standards

Heat-treated raceways for high-cycle fatigue resistance

Application-specific simulation and bearing life prediction

After-sales support with on-site service and global logistics

LDB’s three-row roller slewing bearings have been successfully deployed in over 30 countries, powering the world’s largest cranes, transporters, and energy systems.

Conclusion

When failure is not an option and load conditions are extreme, Three-Row Roller Slewing Bearings are the solution. With LDB as your supplier, you gain access to world-class engineering, manufacturing precision, and tailored support for the most demanding scenarios. Let your machines carry more—with confidence.

Three-Row Roller Slewing Bearings: The Ultimate Load-Bearing Powerhouse

What is a Three-Row Roller Slewing Bearing?

A Three-Row Roller Slewing Bearing is a high-capacity rotational bearing system that features three separate rows of rollers—each row designed to carry different types of load. Unlike single or double-row ball bearings, this design separates axial, radial, and tilting moment loads across three distinct paths, dramatically increasing the load-bearing capacity, stiffness, and operational safety.

These bearings are the largest and most robust slewing rings available in the industry and are widely used in heavy-duty applications that demand uncompromising strength and reliability.

Design Advantages

Triple-Path Load Segregation
Each row of rollers handles a specific load: axial, radial, or moment. This optimized load distribution allows for safe operation under extreme mechanical stress.

Large Contact Areas
Rollers offer line contact instead of point contact like ball bearings, which reduces stress concentration and increases wear resistance.

High Stiffness and Stability
The three-row structure significantly boosts system stiffness, minimizing deflection even under high load or dynamic conditions.

Wide Diameter Range
Due to their robust structure, Three-Row Roller Bearings are available in large diameters, often exceeding 10 meters, to support massive machines.

Gear and Non-Gear Variants
Options include external gear, internal gear, or no gear, supporting various torque transmission needs.

Where Are They Used?

Bucket Wheel Excavators: Massive radial and axial loads in continuous material removal.

Ship Cranes and Offshore Platforms: Extreme moment and vibration resistance in marine conditions.

Radar Antennas and Large Turntables: Precise yet heavy-duty rotation under dynamic loads.

Steel Mills and Rotary Kilns: High-temperature, continuous-duty installations.

Tunnel Boring Machines: Demanding torque and load demands in harsh underground environments.

LDB’s Three-Row Roller Slewing Bearings

LDB Bearing, a globally recognized manufacturer, offers a wide selection of Three-Row Roller Slewing Bearings engineered for critical tasks. Each bearing is manufactured in LDB’s ISO-certified facilities using high-strength alloy steel (42CrMo or 50Mn) and roller elements made of GCr15 precision steel.

LDB Features:

Outer Diameter Range: 1000 mm to over 10,000 mm

Load Rating: Over 10 million Nm tilting moment capacity in custom models

Gear Treatment: Induction hardening and CNC gear cutting for high torque transfer

Sealing: Multi-lip seals for water, dust, and chemical protection

Lubrication: Multi-point grease channels with optional auto-lube systems

LDB also offers custom tooth profiles, bolt hole arrangements, and anti-corrosion coatings to meet industry-specific requirements.

Price, Supplier, and Manufacturer Insights

As a premier supplier and manufacturer, LDB provides comprehensive solutions for industries that rely on ultra-heavy-duty slewing systems.

Pricing Factors Include:

Outer diameter and number of rollers

Gear design and torque requirements

Operational environment (e.g., marine, underground)

Custom sealing, mounting, and lubrication systems

Typical Price Range: USD $5000 to $50,000+ depending on dimensions and load capacity.

All price inquiries are handled directly by LDB’s engineering team via www.ldb-bearing.com, where clients can submit 3D CAD files, request test reports, or consult on long-term bulk procurement.

Why Heavy Machinery OEMs Choose LDB

Over 20 years of field-proven design experience

Gear shaping accuracy to DIN 3960/61 standards

Heat-treated raceways for high-cycle fatigue resistance

Application-specific simulation and bearing life prediction

After-sales support with on-site service and global logistics

LDB’s three-row roller slewing bearings have been successfully deployed in over 30 countries, powering the world’s largest cranes, transporters, and energy systems.

Conclusion

When failure is not an option and load conditions are extreme, Three-Row Roller Slewing Bearings are the solution. With LDB as your supplier, you gain access to world-class engineering, manufacturing precision, and tailored support for the most demanding scenarios. Let your machines carry more—with confidence.

Spur Gear Drive vs Worm Gear Drive: Which One Fits Your Application?

July 24, 2025/in Spur Gear Drive Knowledge /by ldbadmin

What Are Spur Gear and Worm Gear Drives?

Spur gear drives and worm gear drives are two of the most widely used mechanical power transmission systems. Both are used in slew drives to enable controlled rotational movement between components. However, their structure, performance characteristics, and application suitability differ significantly.

A spur gear drive uses parallel shafts and straight teeth gears for high-efficiency torque transmission. It is known for its speed, low backlash, and compactness.

A worm gear drive involves a screw-like worm and a worm wheel set at a 90-degree angle, offering self-locking functionality and excellent torque multiplication.

When selecting the right slew drive system—especially for applications involving solar tracking, cranes, robotics, or heavy machinery—it’s important to understand which type best suits your needs.

Structural and Mechanical Differences

Feature	Spur Gear Drive	Worm Gear Drive
Gear Axis Position	Parallel	Perpendicular
Efficiency	90–98%	30–70%
Backlash	Low (customizable)	High (but self-locking)
Torque Capacity	Moderate to high	Very high torque multiplication
Speed Ratio	Moderate (up to 1:5)	High (up to 1:100)
Self-Locking	No	Yes
Noise	Low at moderate speeds	Quieter under load
Application Focus	Precision, fast movement	Holding loads, slower controlled motion

When to Use Spur Gear Slew Drives

Spur gear slew drives are ideal for applications requiring:

High-speed rotation with minimal backlash

High transmission efficiency

Precise positioning and quick response

Typical Use Cases:

Robotic arms and manipulators

Vehicle-mounted rotating systems

Aerial platforms and surveillance units

Wind turbine blade adjustment

Automated guided vehicles (AGVs)

When to Use Worm Gear Slew Drives

Worm gear slew drives excel in applications that demand:

High load holding capacity

Built-in safety via self-locking

Compact size with high torque output

Typical Use Cases:

Solar tracking systems

Truck cranes and hydraulic arms

Antenna positioners

Tunnel boring machines

Mining and lifting platforms

LDB Product Highlights

As a global manufacturer and supplier, LDB provides both spur gear and worm gear slew drives, ensuring the right fit for every application.

SG-H Spur Gear Slew Drive

High-precision spur gear design

Excellent backlash control

Ideal for robotics and AGVs

Reinforced housing and anti-corrosion options

SE Series Worm Gear Slew Drive

Single-axis rotation for solar tracking

Self-locking worm gear system

Available with AC/DC motor interfaces

SDE-PDE Dual-Worm Slew Drive

Dual input for high precision and torque control

Used in CSP and dual-axis solar trackers

SG-M Spur Gear Slew Drive

Modular design for automation systems

Reliable speed and accuracy with low noise

Price and Cost Comparison

Understanding the price dynamics helps match your budget with performance:

Drive Type	Model Range	Typical Price (USD)
Spur Gear Drive	SG-L / SG-M / SG-H	$400 – $1,500
Worm Gear Drive	SE / S / VE Series	$300 – $2,000
Dual-Worm Drive	SDE-PDE	$900 – $2,500+

Spur gear drives tend to be slightly higher in price due to complexity in machining and backlash tuning.

Worm drives are more economical but offer less mechanical efficiency.

LDB offers tiered price plans based on quantity, delivery terms, and customization.

Choosing the Right Drive: A Decision Framework

Application Type	Recommended Drive Type
High-speed automation	Spur Gear Drive
Heavy-load holding & tracking	Worm Gear Drive
Precision plus torque	Dual-Worm Drive
Solar energy (PV/CSP)	Worm or Dual-Worm
Robotics / AGVs / Vehicles	Spur Gear Drive

LDB as Your Trusted Supplier and Manufacturer

LDB has over two decades of experience in manufacturing slewing systems for diverse global industries. As a manufacturer, LDB offers:

ISO-certified production processes

Custom gearbox engineering

Coating, sealing, and motor integration options

CNC-machined worm gears and gear rings

Full design and CAD drawing support

As a supplier, LDB guarantees:

Global logistics support

After-sales technical service

Stock availability for common models

Spare parts and installation assistance

Conclusion

The choice between a spur gear drive and a worm gear drive boils down to your operational priorities—speed vs torque, precision vs load holding, efficiency vs safety. By evaluating your application’s performance requirements, you can choose a system that delivers optimal value.

With both spur and worm options in its catalog, LDB is ready to help you find the perfect match. Contact us today for a technical consultation or customized quotation.

Slewing Drives in Renewable Energy: Powering the Movement Behind Green Technology

July 24, 2025/in Slewing Drive Knowledge /by ldbadmin

What Is a Slewing Drive?

A slewing drive is a complete, compact rotary actuator system that integrates a slewing bearing with a driving mechanism—commonly a worm gear or spur gear—along with housing, seals, and input options for electric, hydraulic, or planetary motors. Slewing drives enable rotational movement and load support with high torque transmission and positioning precision.

In the renewable energy industry, particularly solar tracking and wind power applications, slewing drives play a critical role by enabling panels, reflectors, and turbines to precisely follow the sun or wind direction. This movement ensures optimal energy capture throughout the day and significantly improves energy efficiency.

Why Renewable Energy Needs Slewing Drives

With increasing global demand for sustainable energy, the efficiency of solar and wind systems is paramount. The slewing drive addresses several engineering and economic pain points in this sector:

Precision Tracking for Solar Panels

Solar photovoltaic (PV) and concentrated solar power (CSP) systems use slewing drives to rotate on single or dual axes to follow the sun’s position across the sky. This boosts energy generation by up to 40% compared to fixed-tilt systems.

High Load Capacity in Harsh Conditions

Outdoor environments expose components to wind, dust, humidity, and extreme temperatures. Slewing drives used in renewables must be sealed (IP65+) and capable of handling static and dynamic loads under high torque.

Compact and Integrated Design

Given limited space on panel racks or turbine towers, slewing drives offer an all-in-one solution. Their self-locking worm gears also prevent back-driving in windy conditions without the need for extra braking systems.

Low Maintenance, Long Lifespan

Reliable renewable systems must operate with minimal service. Quality slewing drives, like those produced by LDB, offer grease-filled, factory-sealed housings that minimize lubrication and reduce downtime.

Applications in Renewable Energy

Application	Slewing Drive Function
Single-Axis Solar Tracker	East-West movement to follow daily sun arc
Dual-Axis Solar Tracker	North-South and East-West movement
CSP Heliostats	Aligning mirrors to a central receiver
Parabolic Dish Collectors	Tilt and rotation for max sunlight collection
Wind Turbine Yaw System	Rotating nacelle to face wind direction
Solar Panel Cleaning Robots	Precise navigation for rotating arms

LDB Slewing Drive Series for Renewable Energy

As a global supplier and high-performance manufacturer, LDB has engineered multiple slewing drive series optimized for the demands of the green energy sector:

SE Series Slew Drives

Self-locking worm gear design

High torque output with compact housing

Ideal for single-axis trackers

SDE-PDE Series Dual-Axis Drives

Simultaneous azimuth and elevation rotation

Accurate positioning for dual-axis solar systems

Integrated motor mount and grease port

HSE and HSE-2 Series

Heavy-duty drives for high-wind applications

Dual worm design for increased torque and redundancy

IP66 protection with corrosion-resistant coatings

Spur Gear Slewing Drives (SG-M / SG-H Series)

High efficiency, lower backlash

Faster response for high-performance solar tracking

Optional servo or stepper motor compatibility

Customized Drive Solutions

LDB offers tailored slewing drives to meet specific voltage, torque, interface, and mounting needs.

Price Insights and Cost Considerations

The price of slewing drives used in renewable energy applications varies based on:

Gear type and torque rating

Input motor configuration (DC, AC, planetary)

Material and coating (e.g., zinc alloy, anodizing)

Sealing, backlash tolerance, and dual-axis capability

Typical Price Range: USD $300 – $2,500 per unit (Custom solutions may exceed this range depending on volume and spec.)

For quotes and consultation, visit www.ldb-bearing.com.

Why Choose LDB for Renewable Energy Projects?

Over 20 years in gear transmission manufacturing

Products in >40 countries powering solar/wind installations

Long lifecycle products (≥25 years) for solar farms

Partnerships with tracker manufacturers and EPC contractors

Certification: ISO 9001, CE, RoHS compliant

LDB not only delivers slewing drives but supports engineering teams with 2D/3D CAD models, torque calculations, and installation training.

Future Outlook

The International Energy Agency (IEA) projects that solar energy will become the dominant power source by 2050. As deployment scales up, demands for smarter, more reliable tracking and rotational systems will grow.

Slewing drives are no longer a hidden component—they are a central actuator in the movement toward clean energy. LDB’s dedication to quality, performance, and customization positions it as a go-to supplier for slewing drives that move the future.

Need help sizing a slewing drive for your tracker system? Contact LDB’s expert engineers at www.ldb-bearing.com and get a custom recommendation within 24 hours.

Slewing Bearings in Wind Turbines: Ensuring Stability and Efficiency

July 24, 2025/in Slewing Bearing Knowledge /by ldbadmin

Introduction: The Role of Slewing Bearings in Wind Energy Systems

Wind turbines are complex electromechanical systems designed to convert kinetic energy from wind into electrical power. At the heart of this process lies a set of crucial components responsible for enabling smooth rotation, efficient tracking, and structural alignment—one of the most important being the slewing bearing. Slewing bearings in wind turbines support yaw and pitch mechanisms, allowing the nacelle and blades to adjust according to wind direction and speed.

In this article, we explore how slewing bearings contribute to the performance, reliability, and longevity of wind turbines. We cover their structural features, material considerations, price implications, supplier recommendations, and highlight why LDB Bearing is a trusted manufacturer in the wind energy sector.

Key Functions of Slewing Bearings in Wind Turbines

Yaw System (Nacelle Rotation)

Slewing bearings enable the entire nacelle to rotate and align with wind direction. This mechanism ensures maximum energy capture and minimizes turbine stress during directional changes.

Pitch System (Blade Adjustment)

Pitch bearings adjust the angle of turbine blades in response to wind speed. This helps maintain optimal aerodynamic performance while protecting blades and the drivetrain from excessive loads.

Structural and Material Considerations

Common Slewing Bearing Types for Wind Turbines:

Four Point Contact Ball Slewing Bearing: Ideal for pitch systems due to compactness and multi-directional load capacity

Cross Roller Slewing Bearing: Suitable for yaw systems requiring higher rigidity and precision

Three-Row Roller Slewing Bearing: Used in large turbines for maximum load distribution

Preferred Materials:

42CrMo (Chromium-Molybdenum Steel): High fatigue resistance, excellent load-bearing properties

Surface Hardened Races: Induction or carburized hardened paths improve wear resistance

Corrosion-Resistant Coatings: For offshore or high-humidity environments

Load and Environmental Challenges

Slewing bearings in wind turbines must withstand:

Dynamic and Static Loads: From rotor torque and wind pressure

Temperature Fluctuations: From sub-zero climates to desert heat

Salt Spray and Moisture: In offshore installations

Low Maintenance Access: Bearings must offer long service intervals

Proper sealing, lubrication, and material selection are critical for ensuring long-term performance under these challenging conditions.

Price, Supplier, and Manufacturer Considerations

Price Factors:

Size and weight of the bearing

Load capacity and safety factors

Coating and sealing options

Custom machining requirements

While high-performance bearings for wind turbines are a significant investment, they deliver long-term value by minimizing downtime and maximizing turbine output.

Supplier and Manufacturer Requirements:

Proven track record in renewable energy sector

Compliance with IEC and ISO wind turbine bearing standards

Full traceability and testing documentation (e.g., UT, MPI, hardness)

Engineering support for integration and troubleshooting

LDB Bearing’s Solutions for Wind Turbine Applications

LDB Bearing designs and manufactures wind-turbine-specific slewing bearings with optimized structures, coatings, and service life characteristics.

Product Highlights:

Cross Roller Slewing Bearings for yaw systems: High rigidity and minimal deflection

Four Point Contact Bearings for pitch mechanisms: Compact and efficient

Customized Three-Row Roller Bearings: For large-scale turbines

Features:

Induction-hardened raceways and precision-machined rollers

Multi-layer sealing structures with salt-spray protection

Factory-lubricated and pretested units

LDB Advantage:

Direct manufacturer pricing

Global supplier network

Technical support for wind farm deployment and maintenance planning

Case Study: LDB Bearings in Offshore Wind Projects

In a 100 MW offshore wind project in Northern Europe, LDB supplied three-row roller slewing bearings with IP66-rated seals and anti-corrosion coating. After 24 months of continuous operation under high humidity and salt exposure, inspections showed no seal failures or abnormal wear, confirming LDB’s bearings as a dependable long-term investment.

Conclusion

Slewing bearings are indispensable in the efficient and safe operation of modern wind turbines. Their performance directly impacts energy output, maintenance frequency, and operational safety.

LDB Bearing stands as a reliable partner for wind turbine OEMs and operators, offering engineering-grade slewing bearing solutions tailored for both onshore and offshore applications. Whether you need precision, durability, or long service intervals, LDB delivers trusted performance at a competitive price.

To learn more or request a quote, visit www.ldb-bearing.com.

Slewing Bearings in Wind Turbines: Ensuring Stability and Efficiency

Introduction: The Role of Slewing Bearings in Wind Energy Systems

Wind turbines are complex electromechanical systems designed to convert kinetic energy from wind into electrical power. At the heart of this process lies a set of crucial components responsible for enabling smooth rotation, efficient tracking, and structural alignment—one of the most important being the slewing bearing. Slewing bearings in wind turbines support yaw and pitch mechanisms, allowing the nacelle and blades to adjust according to wind direction and speed.

In this article, we explore how slewing bearings contribute to the performance, reliability, and longevity of wind turbines. We cover their structural features, material considerations, price implications, supplier recommendations, and highlight why LDB Bearing is a trusted manufacturer in the wind energy sector.

Key Functions of Slewing Bearings in Wind Turbines

Yaw System (Nacelle Rotation)

Slewing bearings enable the entire nacelle to rotate and align with wind direction. This mechanism ensures maximum energy capture and minimizes turbine stress during directional changes.

Pitch System (Blade Adjustment)

Pitch bearings adjust the angle of turbine blades in response to wind speed. This helps maintain optimal aerodynamic performance while protecting blades and the drivetrain from excessive loads.

Structural and Material Considerations

Common Slewing Bearing Types for Wind Turbines:

Four Point Contact Ball Slewing Bearing: Ideal for pitch systems due to compactness and multi-directional load capacity

Cross Roller Slewing Bearing: Suitable for yaw systems requiring higher rigidity and precision

Three-Row Roller Slewing Bearing: Used in large turbines for maximum load distribution

Preferred Materials:

42CrMo (Chromium-Molybdenum Steel): High fatigue resistance, excellent load-bearing properties

Surface Hardened Races: Induction or carburized hardened paths improve wear resistance

Corrosion-Resistant Coatings: For offshore or high-humidity environments

Load and Environmental Challenges

Slewing bearings in wind turbines must withstand:

Dynamic and Static Loads: From rotor torque and wind pressure

Temperature Fluctuations: From sub-zero climates to desert heat

Salt Spray and Moisture: In offshore installations

Low Maintenance Access: Bearings must offer long service intervals

Proper sealing, lubrication, and material selection are critical for ensuring long-term performance under these challenging conditions.

Price, Supplier, and Manufacturer Considerations

Price Factors:

Size and weight of the bearing

Load capacity and safety factors

Coating and sealing options

Custom machining requirements

While high-performance bearings for wind turbines are a significant investment, they deliver long-term value by minimizing downtime and maximizing turbine output.

Supplier and Manufacturer Requirements:

Proven track record in renewable energy sector

Compliance with IEC and ISO wind turbine bearing standards

Full traceability and testing documentation (e.g., UT, MPI, hardness)

Engineering support for integration and troubleshooting

LDB Bearing’s Solutions for Wind Turbine Applications

LDB Bearing designs and manufactures wind-turbine-specific slewing bearings with optimized structures, coatings, and service life characteristics.

Product Highlights:

Cross Roller Slewing Bearings for yaw systems: High rigidity and minimal deflection

Four Point Contact Bearings for pitch mechanisms: Compact and efficient

Customized Three-Row Roller Bearings: For large-scale turbines

Features:

Induction-hardened raceways and precision-machined rollers

Multi-layer sealing structures with salt-spray protection

Factory-lubricated and pretested units

LDB Advantage:

Direct manufacturer pricing

Global supplier network

Technical support for wind farm deployment and maintenance planning

Case Study: LDB Bearings in Offshore Wind Projects

In a 100 MW offshore wind project in Northern Europe, LDB supplied three-row roller slewing bearings with IP66-rated seals and anti-corrosion coating. After 24 months of continuous operation under high humidity and salt exposure, inspections showed no seal failures or abnormal wear, confirming LDB’s bearings as a dependable long-term investment.

Conclusion

Slewing bearings are indispensable in the efficient and safe operation of modern wind turbines. Their performance directly impacts energy output, maintenance frequency, and operational safety.

LDB Bearing stands as a reliable partner for wind turbine OEMs and operators, offering engineering-grade slewing bearing solutions tailored for both onshore and offshore applications. Whether you need precision, durability, or long service intervals, LDB delivers trusted performance at a competitive price.

To learn more or request a quote, visit www.ldb-bearing.com.

Slewing Bearings for Solar Trackers: Precision and Durability for Maximum Sunlight Capture

July 24, 2025/in Slewing Bearing Knowledge /by ldbadmin

What is a Slewing Bearing in Solar Tracking Systems?

A slewing bearing in solar trackers is a large-diameter rotational bearing that enables the controlled movement of photovoltaic (PV) or concentrated solar power (CSP) panels. Installed at the core of single or dual-axis solar tracking systems, slewing bearings allow solar modules to follow the sun’s path throughout the day—maximizing energy yield by maintaining optimal exposure.

These bearings accommodate axial, radial, and tilting moment loads, making them ideal for supporting the structural motion and stability required in dynamic solar environments.

Key Performance Features for Solar Applications

High Load-Bearing Capacity
Solar trackers, especially dual-axis systems, impose significant loads due to wind pressure and the weight of the panel structures. LDB slewing bearings are engineered to withstand these forces while maintaining smooth rotation.

Maintenance-Free or Low-Grease Options
Advanced sealing systems and corrosion-resistant materials enable long-term performance in outdoor environments, reducing the need for frequent maintenance.

High Positioning Accuracy
Integrated with slew drives, these bearings support precise angular adjustments critical for energy-efficient solar tracking.

Corrosion-Resistant Coatings
LDB offers galvanized or surface-treated bearings to prevent rust in desert, coastal, or humid areas.

Long Service Life
Designed for 20–25 years of continuous outdoor operation, with reliability under extreme temperatures and UV exposure.

Types of Slewing Bearings Used in Solar Trackers

Four Point Contact Ball Bearings: Standard for single-axis trackers due to compact design and good load distribution.

Double Row Ball Slewing Bearings: Used in dual-axis systems for greater stability and load support.

Cross Roller Slewing Bearings: Preferred for applications requiring high rigidity and precise movement.

Flanged Slewing Bearings: Simplify mounting and reduce space in structural designs.

Application Scenarios

Utility-Scale PV Power Plants

Dual-Axis CSP Mirror Tracking Systems

Agricultural and Hybrid Agrivoltaic Installations

Remote Off-Grid Solar Fields

Smart Rooftop Solar Projects

LDB Slewing Bearings for Solar Tracker Solutions

As a global supplier and ISO-certified manufacturer, LDB produces a wide range of slewing bearings specifically designed for solar tracking environments. Our portfolio includes:

Standard diameters from 300 mm to 1,600 mm

Customized bolt hole patterns and mounting options

IP66-sealed designs for outdoor reliability

Gearless or internal/external gear configurations

Pre-lubricated units with service intervals up to 5 years

Price and Procurement Guidance

Key Price Factors:

Bearing diameter and ring thickness

Gear type (internal, external, none)

Sealing and surface treatment

Application-specific load calculations

Typical Price Range: USD $120 to $3,500 depending on size, features, and order quantity.

For pricing and technical support, visit www.ldb-bearing.com to request CAD files, datasheets, and custom quotations.

Why LDB for Solar Slewing Bearings?

Over 20 years of experience in the renewable energy sector

Proven supply record in North America, the Middle East, and Asia-Pacific

Close integration with LDB slew drives for turnkey solutions

Low MOQ and scalable supply for EPCs and tracker OEMs

LDB’s bearings are installed in over 5GW of solar generation systems worldwide, powering the shift to sustainable energy one rotation at a time.

Conclusion

In solar tracking, precision and durability directly impact energy output. LDB’s slewing bearings are engineered to keep your panels aligned with the sun—day after day, year after year. As a trusted manufacturer and experienced supplier, LDB supports the solar industry with components that last, perform, and deliver results.

Slewing Bearings for Solar Trackers: Precision and Durability for Maximum Sunlight Capture

What is a Slewing Bearing in Solar Tracking Systems?

A slewing bearing in solar trackers is a large-diameter rotational bearing that enables the controlled movement of photovoltaic (PV) or concentrated solar power (CSP) panels. Installed at the core of single or dual-axis solar tracking systems, slewing bearings allow solar modules to follow the sun’s path throughout the day—maximizing energy yield by maintaining optimal exposure.

These bearings accommodate axial, radial, and tilting moment loads, making them ideal for supporting the structural motion and stability required in dynamic solar environments.

Key Performance Features for Solar Applications

High Load-Bearing Capacity
Solar trackers, especially dual-axis systems, impose significant loads due to wind pressure and the weight of the panel structures. LDB slewing bearings are engineered to withstand these forces while maintaining smooth rotation.

Maintenance-Free or Low-Grease Options
Advanced sealing systems and corrosion-resistant materials enable long-term performance in outdoor environments, reducing the need for frequent maintenance.

High Positioning Accuracy
Integrated with slew drives, these bearings support precise angular adjustments critical for energy-efficient solar tracking.

Corrosion-Resistant Coatings
LDB offers galvanized or surface-treated bearings to prevent rust in desert, coastal, or humid areas.

Long Service Life
Designed for 20–25 years of continuous outdoor operation, with reliability under extreme temperatures and UV exposure.

Types of Slewing Bearings Used in Solar Trackers

Four Point Contact Ball Bearings: Standard for single-axis trackers due to compact design and good load distribution.

Double Row Ball Slewing Bearings: Used in dual-axis systems for greater stability and load support.

Cross Roller Slewing Bearings: Preferred for applications requiring high rigidity and precise movement.

Flanged Slewing Bearings: Simplify mounting and reduce space in structural designs.

Application Scenarios

Utility-Scale PV Power Plants

Dual-Axis CSP Mirror Tracking Systems

Agricultural and Hybrid Agrivoltaic Installations

Remote Off-Grid Solar Fields

Smart Rooftop Solar Projects

LDB Slewing Bearings for Solar Tracker Solutions

As a global supplier and ISO-certified manufacturer, LDB produces a wide range of slewing bearings specifically designed for solar tracking environments. Our portfolio includes:

Standard diameters from 300 mm to 1,600 mm

Customized bolt hole patterns and mounting options

IP66-sealed designs for outdoor reliability

Gearless or internal/external gear configurations

Pre-lubricated units with service intervals up to 5 years

Price and Procurement Guidance

Key Price Factors:

Bearing diameter and ring thickness

Gear type (internal, external, none)

Sealing and surface treatment

Application-specific load calculations

Typical Price Range: USD $120 to $3,500 depending on size, features, and order quantity.

For pricing and technical support, visit www.ldb-bearing.com to request CAD files, datasheets, and custom quotations.

Why LDB for Solar Slewing Bearings?

Over 20 years of experience in the renewable energy sector

Proven supply record in North America, the Middle East, and Asia-Pacific

Close integration with LDB slew drives for turnkey solutions

Low MOQ and scalable supply for EPCs and tracker OEMs

LDB’s bearings are installed in over 5GW of solar generation systems worldwide, powering the shift to sustainable energy one rotation at a time.

Conclusion

In solar tracking, precision and durability directly impact energy output. LDB’s slewing bearings are engineered to keep your panels aligned with the sun—day after day, year after year. As a trusted manufacturer and experienced supplier, LDB supports the solar industry with components that last, perform, and deliver results.