SG-H Spur Gear Slewing Drive: Heavy-Duty Rotation with High Torque and Precision
What Is an SG-H Spur Gear Slewing Drive?
The SG-H Spur Gear Slewing Drive is a high-performance rotational drive unit designed for applications that require precise, powerful motion control. Utilizing a hardened spur gear mechanism instead of a worm gear, this model offers superior transmission efficiency, high output torque, and rapid response.
The “H” in SG-H stands for “Heavy-duty,” reflecting its enhanced structure for tough industrial environments such as construction cranes, mining loaders, solar trackers, and aerial platforms.
Key Advantages of SG-H Spur Gear Slewing Drives
High Transmission Efficiency
Spur gear engagement offers efficiency levels up to 95%, significantly reducing energy loss and enabling faster rotation speeds compared to worm drives.
Robust Load Handling
SG-H units are engineered to support extreme axial, radial, and tilting loads, ideal for lifting mechanisms, turning tables, and robotic joints.
Compact and Modular Design
The gear mechanism is housed within a compact, fully enclosed casing with IP65 sealing. Modular options allow easy motor integration and flexible orientation.
Fast Dynamic Response
Because spur gears avoid self-locking, the SG-H design is favored in systems requiring high-speed adjustments, frequent starts/stops, or bidirectional movement.
Applications Across Industries
| Industry | Application Examples |
| Construction | Boom rotation, lifting mechanisms |
| Solar Power | Fast-response tracking for CPV and heliostats |
| Military Equipment | Artillery platforms, armored vehicle turrets |
| Robotics | Joint actuation, base rotation units |
| Mining | Conveyor swings, drill head positioning |
SG-H Product Line by LDB
As an advanced manufacturer and supplier, LDB delivers a complete line of SG-H series spur gear slewing drives with the following options:
Outer diameter: 150 mm – 1200 mm
Torque rating: Up to 40 kNm
Gear module: Customizable M4 – M16
Motor mount: Servo, stepper, hydraulic, planetary
Housing: Cast aluminum or steel alloy
Sealing: IP65 (upgradable)
Every SG-H unit is assembled and tested in LDB’s certified facility, ensuring high concentricity, gear mesh precision, and fatigue performance.
Typical Price Range and Custom Options
Price Influencers:
Gear size and module
Drive torque requirement
Motor type and flange dimensions
Coating and corrosion resistance level
Typical Price Range: USD $480 – $3,800 per unit
Bulk orders and OEM configurations can be negotiated based on technical drawings and volume.
Request quotes at www.ldb-bearing.com.
Engineering Support from LDB
LDB supports each SG-H customer with:
CAD drawing libraries and 3D models
Gear mesh analysis reports
Finite element simulation for dynamic load scenarios
Joint development of motor integration and encoder systems
Installation & Maintenance Recommendations
Align gear center precisely during installation
Use high-precision coupling for motor input
Check backlash regularly and re-torque as needed
Grease gear teeth every 6–12 months depending on duty
Why Choose LDB’s SG-H Slewing Drives?
Decades of experience in heavy-gear drive systems
Global delivery network and multilingual support
Low MOQ for customization projects
Trusted by clients in energy, defense, and heavy industry
Conclusion
SG-H Spur Gear Slewing Drives deliver unmatched rotational performance for applications where speed, strength, and precision matter. With outstanding torque output and flexible integration features, these units provide a competitive edge across industries.
At LDB, we bring precision engineering, rugged materials, and responsive support to every SG-H drive we produce. Let us power your motion with confidence.
Learn more or start your project at www.ldb-bearing.com.
