Pre-stage planetary gearbox ( General machine building )

A project has been completed to replace a three-stage gearbox with a single-stage planetary gearbox with a preliminary stage (patents RU2677952 and RU2683896).

Gearbox Parameters:
- input power - 66 kW
- input revolutions - 600 rpm

The project was carried out as part of the import substitution program for gearboxes for rolling mills.

1. Less Parts and Bearings - More Reliability
2. 40% less weight
3. Smaller dimensions
4. Reduced manufacturing cost 5. Efficiency - 95%, against 90% of the prototype
6. Estimated durability - 50000 hours

Download: 3D pdf Pre-stage planetary gearbox

Download: 3D pdf Three stage gearbox

The principle of transmission of rotation between parallel shafts used in a single-stage gearbox:


  • Weight: 2731 kg.
  • Rated torque: 175000 Hm.
  • Gear ratio number: 175

  • Comparison with involute gearing

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