The gear ratio for a slew drive is the ratio of the number of teeth on the driven gear (typically the slewing bearing or ring gear) to the number of teeth on the driving gear (such as a worm or spur gear). The gear ratio determines how much the input rotational speed is reduced to achieve the desired output torque and rotation speed.
| Model | Output Torque | Tilting Moment Torque | Holding Torque | Gear Ratio | Tracking Precision | Weight | Drawing |
|---|---|---|---|---|---|---|---|
| W17 | 12.96 KN.m | 142.4 KN.m | 58 KN.m | 104:1 | ≤0.1° | 82kg |  |
| W17 | 9564 lbf.ft | 105×10³ lbf.ft | 42.8×10³ lbf.ft | 104:1 | ≤0.1° | 82kg | |
Factors Affecting Gear Ratio in Slew Drives:
- Type of Gear: Worm gears typically have higher gear ratios (up to 100:1 or more), while spur gears have lower ratios (often between 3:1 to 10:1).
- Application Requirements: Gear ratios are selected based on the need for torque and speed in specific applications. Higher ratios are used when more torque and precise control are required, while lower ratios provide faster rotation.
- Size of the Drive: Larger slew drives with more teeth on the slewing ring can have higher gear ratios, allowing for more torque.
Examples of Gear Ratios:
- Worm Gear Slew Drives: Typically range from 30:1 to 100:1, with some designs going even higher. This is ideal for applications requiring high torque and slow, controlled movement.
- Spur Gear Slew Drives: Commonly have gear ratios from 3:1 to 10:1, providing a balance between torque and rotational speed.
The appropriate gear ratio for a slew drive is determined by the application’s specific requirements, such as load capacity, rotation speed, and precision.
