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
- 2-Rotary Axes
Allows machining of various workpieces. - Available in 2 Table Diameters
Available in table diameters from 80, 100 mm. - Zero Backlash Technology
RollerDrive Achieves Zero-backlash - No Clamping
No clamping motion necessary because the mechanism is free of play.
Application
- Machining of impellers
- Machining of turbine blades
- Machining of dies and molds
Specifications
| Description | Units | RT080 | RT100 |
|---|---|---|---|
| Tilt Angle | deg | -20 to +120 | -20 to +120 |
| Table OD | mm | φ80 | φ100 |
| Table Bore Diameter | mm | φ30 H7 (Table surface side only) | φ40 H7 |
| Table Height at 0° | mm | 165 | 197 |
| Center Height at 90° | mm | 115 | 132 |
| Gear Ratio (Table/Tilt Axes) | 1/48 (table) 1/60 (tilt) | 1/48 1/60 |
|
| Max Speed (Table/Tilt Axes) | rpm | 62.5 (table) 50 (tilt) | 100 75 |
| Positioning Accuracy (Table/Tilt Axes) | arcsec | ±20 (table) ±15 (tilt) | ±15 ±10 |
| Repeatability (Table/Tilt Axes) | arcsec | 8 (table) 8 (tilt) | 8 4 |
| Product Weight | kg | 70 | 91 |