What is s slewing drive?

A  slewing drive (or slew drive) is a compact, high-torque rotational actuator that combines a worm gear (or other gear mechanism) with a slewing bearing (rotary bearing). It is designed to provide controlled rotational movement under heavy loads while maintaining precision and durability.

Key Components of a Slewing Drive:
1. Slewing Bearing – A large rotary bearing that supports axial, radial, and moment loads.
2. Worm Gear (or Helical/Planetary Gear) – Provides high reduction ratios for torque multiplication and self-locking capability.
3. Housing – Protects internal components and provides mounting points.
4. Input Shaft (Motor Interface) – Connects to an electric, hydraulic, or manual drive system.

How It Works:
- The input shaft (driven by a motor or manually) turns the worm gear.
- The worm gear engages with the slewing bearing’s gear teeth, causing slow, controlled rotation.
- The self-locking feature (common in worm gears) prevents back-driving, holding position without brakes.

Applications:
- Solar Trackers – Adjusts solar panels to follow the sun.
- Cranes & Excavators – Provides rotation for booms and platforms.
- Wind Turbines – Adjusts blade pitch or yaw orientation.
- Satellite & Radar Systems – Enables precise rotational positioning.
- Medical & Industrial Automation – Used in robotic arms and turntables.

Advantages:
✔ High torque output in a compact design
✔ Self-locking capability (worm gear type)
✔ Handles combined loads (axial, radial, moment)
✔ Smooth, precise rotation with low backlash

Types of Slewing Drives:
- Single-Axis – Rotation in one plane (e.g., solar trackers).
- Dual-Axis – Allows movement in two directions (e.g., advanced solar systems).
- Motorized – Integrated with electric or hydraulic motors.
- Manual – Operated by hand cranks or levers.

Would you like details on a specific application or type of slewing drive?