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

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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

IndustryTypical ApplicationLDB Solution
RoboticsBase joints, rotary axisLDB-CR Series
Medical EquipmentCT/MRI scanner rotationLow-noise, sealed model
SemiconductorWafer handling robotsAnti-static variant
AerospaceAntenna pointing systemsLightweight precision
Machine ToolsIndexing tables, measuring platformsPreloaded 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 RangePrice Range (USD)Gear Type
200mm–600mm$200 – $800Gearless/Int
600mm–1200mm$800 – $1600External 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.

Cross Roller Slewing Bearings: Precision Rotation for High-Stiffness Applications

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What Is a Cross Roller Slewing Bearing?

A cross roller slewing bearing is a type of precision rotational bearing that features cylindrical rollers arranged alternately in perpendicular (90-degree) orientations between two raceways. This crossed arrangement allows the bearing to simultaneously handle axial, radial, and moment loads while maintaining high rigidity and minimal rotational clearance.

Because of their compact structure and high rotational accuracy, cross roller slewing bearings are widely used in equipment where both precision and load-bearing capacity are critical. This includes medical imaging systems, industrial robots, radar antennas, and machine tools.

Unique Benefits of Cross Roller Slewing Bearings

High Rigidity in a Compact Form

The orthogonal roller arrangement offers significantly higher stiffness compared to ball slewing bearings, even in small spaces. This allows for precise control of rotation under load.

Accurate Positioning

Thanks to their low friction and backlash, cross roller slewing bearings provide smooth, accurate rotation—making them ideal for devices requiring high repeatability.

Combined Load Support

These bearings efficiently manage axial, radial, and tilting moment loads at the same time, reducing the need for multiple bearing sets or complex assemblies.

Space Optimization

The compact design minimizes thickness and simplifies integration in tight enclosures—critical for surgical robots or semiconductor processing machines.

Where Are Cross Roller Slewing Bearings Used?

IndustryUse Case
Medical EquipmentCT and MRI gantry rotation, surgical robots
RoboticsJoint rotation, base turntables
AerospaceSatellite antenna positioning systems
Optical SystemsPrecision lenses and telescope tracking
CNC & Machine ToolsRotary tables, indexing systems
Military SystemsRadar dishes, missile launcher bases

LDB’s Cross Roller Slewing Bearing Solutions

As a long-standing manufacturer and global supplier, LDB offers cross roller slewing bearings engineered for high-performance applications. Our portfolio includes:

Standard cross roller slewing bearings with outer diameters from 200mm to 1500mm

Geared and non-geared configurations (internal, external, or gearless)

Split-type designs for easy maintenance in compact structures

Preloaded systems for zero-backlash motion

Stainless steel options for cleanroom and medical use

Design Highlights:

Integrated sealing rings

Ultra-smooth raceway grinding

Precision heat-treated rollers

Dual-row or tapered cross roller configurations for added capacity

LDB’s cross roller series is trusted by clients in Japan, Germany, and the US for applications where failure is not an option.

Pricing and Procurement Considerations

Price factors include:

Diameter and load rating

Gear module and accuracy grade

Coating (e.g., phosphate, black oxide, nickel-plated)

Customization of bolt holes or preload

Typical Price Range: USD $500 – $5,000 per unit (High-precision or large-diameter types may vary above this range.)

When selecting a cross roller slewing bearing, consult your manufacturer or supplier for 3D models, load-life calculations, and installation drawings.

Request your quote today via www.ldb-bearing.com.

Installation Tips

Ensure flatness and parallelism of the mounting surface

Do not apply force directly on the bearing face during installation

Use torque-controlled tightening on bolts

Apply uniform preload where applicable

Lubricate thoroughly before first use and follow re-greasing intervals

Why Choose LDB for High-Precision Bearings?

20+ years of bearing production excellence

In-house design and manufacturing for special orders

Strict quality control with full traceability

ISO 9001, CE, and medical device component certifications

Rapid response on RFQs and technical consultations

LDB’s cross roller slewing bearings meet the world’s most demanding requirements—from operating rooms to orbital satellites.

Final Thoughts

When accuracy and reliability are non-negotiable, cross roller slewing bearings are the solution. Their ability to combine precision, strength, and compact form makes them indispensable in today’s high-tech machinery.

LDB brings decades of experience and a global network to support your project from design through delivery. Let us help you build smoother, stronger, smarter motion systems.

Explore our product range or request support at www.ldb-bearing.com.

Cross Roller Slewing Bearings: High-Precision Rotation with Maximum Rigidity

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What is a Cross Roller Slewing Bearing?

A Cross Roller Slewing Bearing is a type of rotational bearing where cylindrical rollers are alternately arranged at 90° to each other between inner and outer rings. Unlike traditional ball bearings, the cross-roller configuration enables ultra-high stiffness, smooth motion, and precise load management in both axial and radial directions—plus tilting moments. This makes them especially suitable for applications that require compact size, minimal backlash, and excellent positioning accuracy.

Cross roller slewing bearings are often used in robotics, precision turntables, radar systems, and aerospace testing equipment.

Structural Advantages

Crossed Roller Design
The alternating 90° roller orientation allows the bearing to support loads in every direction—axial, radial, and moment—simultaneously.

High Rigidity and Minimal Deformation
Roller line contact ensures load is spread evenly across raceways, minimizing elastic deformation and enhancing operational precision.

Compact Profile with High Load Capacity
Despite its slim cross-section, this bearing type achieves exceptional stiffness and load-bearing capability.

Precision Rotation
Cross roller bearings maintain minimal runout and backlash, which is critical for automated machinery and motion control systems.

Multiple Mounting Options
Available with internal gear, external gear, or gearless configurations, as well as flanged and split-ring designs.

Application Scenarios

Industrial Robots and Welding Arms: For smooth, backlash-free movement in articulated joints.

Machine Tool Rotating Tables: Ensuring high positioning accuracy during complex machining.

Medical Equipment: In surgical robots and imaging systems where vibration-free motion is essential.

Aerospace Test Platforms: For structural and vibration analysis systems with high stability needs.

Radar and Satellite Dishes: Enabling stable tracking in precision positioning applications.

LDB’s Cross Roller Slewing Bearings

As a premium slewing bearing manufacturer, LDB designs and produces high-performance cross roller slewing bearings using ultra-precise machining, induction hardening, and roller preloading processes.

Key Technical Features:

Outer Diameter Range: 200 mm – 3500 mm

Roller Material: GCr15 precision-ground cylindrical rollers

Raceway Material: Forged and hardened 42CrMo or 50Mn

Sealing System: Contact and labyrinth seals for indoor/outdoor use

Lubrication: Pre-filled with grease, with optional oiling ports

LDB also offers preload customization, non-standard geometries, and hybrid ceramic roller solutions for demanding environments.

Pricing, Supplier, and Manufacturer Information

LDB is a globally trusted supplier and manufacturer of cross roller slewing bearings. Our products are backed by ISO 9001 certification, advanced testing, and rapid global logistics.

Pricing Influencers:

Roller diameter and quantity

Bearing size and gear configuration

Precision class and preload settings

Custom coating and corrosion protection options

Typical Price Range: USD $250 to $3500 depending on specifications.

Engineers and procurement teams can request 2D/3D CAD models, pricing, and engineering advice through www.ldb-bearing.com.

Why Choose LDB Cross Roller Bearings?

Extreme stiffness for zero-backlash systems

High-speed rotary performance

Custom load direction optimization

Fast prototyping and small-batch production for R&D

Extensive deployment in precision and robotic industries

LDB’s cross roller bearings are field-proven in medical imaging systems, semiconductor positioning, robotic actuators, and satellite tracking mechanisms.

Conclusion

Cross Roller Slewing Bearings are the go-to choice for engineers who need ultimate accuracy, strength, and compactness. LDB delivers precision-engineered solutions that empower smart machines and critical infrastructure. For those seeking a proven supplier and precision manufacturer, LDB ensures every degree of rotation counts.