SG-M Spur Gear Slewing Drive: Medium-Duty Rotation for Industrial and Smart Equipment
What is an SG-M Spur Gear Slewing Drive?
The SG-M Spur Gear Slewing Drive is a medium-duty rotary drive unit built for applications that demand both speed and stability. As the mid-range model in LDB’s SG Series, the SG-M blends the high-efficiency benefits of spur gear mechanisms with larger torque capacity, improved structural rigidity, and increased motion accuracy.
This drive is particularly well-suited for industrial automation, smart manufacturing, and modular robotics platforms where a balance of compact size, precision motion, and reliable operation is critical.

Key Features and Functional Benefits
Spur Gear Efficiency and Precision
Spur gears provide up to 95% efficiency, making the SG-M ideal for motion-sensitive systems with moderate torque demands.
Rigid Construction for Stability
The unit incorporates high-strength alloy steel gears, precision-machined housings, and dual-bearing support to withstand axial, radial, and tilting loads.
High Positioning Accuracy
With backlash options as low as 0.05°, the SG-M supports applications requiring high-speed rotation with precision stopping.
Multi-Motor Compatibility
Adaptable to NEMA, planetary, servo, or stepper motors with optional couplings and housing adapters.
Semi-Enclosed or Fully Sealed
Available in IP54 to IP65 sealing configurations for light industrial, semi-outdoor, and clean room applications.
Typical Applications
Industrial Robotics Arms: Mid-joint or base rotation with higher payloads.
Automated Storage and Retrieval Systems (AS/RS): High-speed direction changes in racking systems.
Packaging and Sorting Equipment: Fast-cycle rotation in carton aligners and conveyor switches.
Surveillance and Tracking Systems: Outdoor camera domes and radar tracking bases.
Light Construction Equipment: Mobile platforms and compact utility units.
LDB’s SG-M Spur Gear Drive Series
LDB offers the SG-M in sizes from 150 mm to 400 mm with gear modules designed for enhanced torque transfer and rotational control. Spur gear modules are hardened and matched to internal raceways for optimal synchronization.
Technical Specifications:
Torque Output: 800 Nm to 8,000 Nm
Rotation Speed: Up to 45 rpm
Gear Ratios: 10:1 to 80:1
Backlash: 0.1° standard; precision grade 0.05° optional
Material: Alloy steel gear set, cast aluminum or steel housing
Seal Level: IP54 (standard); IP65 (optional)
CAD models and motor adapter kits are available upon request.
Pricing, Supplier, and Manufacturer Guidance
LDB is a global supplier and experienced manufacturer of mid-range rotary drive solutions. The SG-M is produced using high-tolerance gear shaping and CNC machining under ISO-certified quality systems.
Price Variables Include:
Gear size and material hardness
Precision level and backlash requirement
Motor configuration and mounting hardware
Coating and environmental sealing specifications
Typical Price Range: USD $350 – $3,200 depending on model and customization level.
Product datasheets and integration services are available at www.ldb-bearing.com, with global delivery and application support.
Why LDB for SG-M Drives?
Application-specific engineering advice
Broad portfolio of spur gear systems for scalability
Integrated design, production, and inspection workflow
Trusted by automation integrators and robotics OEMs worldwide
From robotics labs in Germany to electronics plants in South Korea, SG-M drives from LDB are enabling the next generation of smart motion control.
Conclusion
For medium-load rotary motion that demands both speed and control, the SG-M Spur Gear Slewing Drive delivers. Backed by LDB’s expertise as a global manufacturer and dependable supplier, this drive balances efficiency, accuracy, and integration ease. Choose SG-M for smart rotation that scales with your system.