Over View
In terms of performance, Sankyo's roller gear does for rotary motions what the ball screw does for linear motions. The roller gear cam mechanism consists of a roller gear and globoidal cam. Similar to the preloading structure of a ball screw, the roller gear has no backlash, and transfers power by rolling contact for strong rigidity and excellent efficiency. And no clamping is necessary.
Features
- Available in 4 Table Diameters
Available in table diameters from 100 to 240 mm. - Zero Backlash Technology
RollerDrive achieves zero-backlash. - High Accuracy
Rotary positioning accuracy 10 seconds (RS200, RS240) maximum. - No Clamping
No clamping motion necessary because the mechanism is free of play. - Exclusively for Vertical Mounting
Exclusively for vertical mounting.
Application
- Machining of artificial bones and joints
- Machining of automotive engine parts
- Lens polishers
Specifications
| Characteristics | Units | RS100 | RS170 | RS200 | RS240 |
|---|---|---|---|---|---|
| Table OD | mm | φ100 | φ170 | φ200 | φ240 |
| Table Bore Diameter | mm | φ50 H7 | φ80 H7 | φ100 H7 | φ130 H7 |
| Center Height | mm | 125 | 115 | 125 | 132 |
| Gear Ratio | 1/60 | 1/60 | 1/60 | 1/90 | |
| Max Table Speed | rpm | 75 | 75 | 75 | 75 |
| Positioning Accuracy | arcsec | ±15 | ±15 | ±10 | ±10 |
| Repeatability | arcsec | 8 | 8 | 4 | 4 |
| Product Weight | kg | 38 | 44 | 56 | 72 |