Rotary table RTH-200
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Series RTH direct drive rotary stages provide superior angular positioning and are designed to eliminate
backlash, friction and wear problems associated with worm, gear and belt drives.
It combine axial brushless RotoLinear motoring modules and planar air bearings in a compact, direct drive configuration.
Large area air bearings provide sufficient payload stiffness and maximizes performance in respect to wobble and run-out. Radially distributed RotoLinear motoring modules provide high positioning stiffness during rotary indexing and when installed on moving XY tables.
These tables provide unlimited rotation capability and are compatible with standard micro-stepping drives and indexers. Can also be equipped with IntelLiCoder feedback and driven as a commutated brushless motor.
RTH rotary stage feature center bore (aperture) for user to install cabling, vacuum lines or fixtures. Can also be supplied with recirculating mechanical ball bearings.
 Rotary Table RR-18-14 RR-18-14
Diameter 454 mm Aperture 355 mm Height 56 mm |
 Rotary table RTH-100 RTH-100
Diameter 100 mm Aperture 20 mm Height 34 mm |
 Rotary table RTH-140 RTH-140
Diameter 140 mm Aperture 36 mm Height 37 mm |
 Rotary table RR-10-6 RR10-6
Diameter 254 mm Aperture 152 mm Height 37 mm |
 Rotary table RR-14-10 RR-14-10
Diameter 355 mm Aperture 254 mm Height 45 mm |
|
Parameter |
RTH-200 |
|||
|
Peak torque |
Nm |
1 |
3 |
8 |
|
Repeatability, open loop (micro-stepping) |
arc-sec |
5 |
||
|
Repeatability, with feedback (servo mode) |
arc-sec |
1 |
3 |
- |
|
Resolution (note 1, 2) |
arc-sec |
1 |
3 |
4 |
|
Max speed |
rpm |
150 |
120 |
60 |
|
Motor type (note 1, 2) |
|
2 phase brushless |
||
|
Number of phases |
|
2 |
||
|
Current per phase |
Amp |
3 |
3 |
1.5 |
|
Bearing type axial/radial |
|
air |
||
|
Air bearing pressure |
atm |
3.5 |
||
|
Air bearing run-outs |
microns |
5 |
||
|
Air bearing gap |
microns |
12 |
||
|
Finish |
|
hard anodized aluminum |
||
|
Outside diameter |
mm |
100 |
140 |
200 |
|
Aperture diameter |
mm |
20 |
36 |
20 |
|
Total height (rotor and stator) |
mm |
34 |
39 |
37 |
Note 1: with micro-stepping drive, 250 micro-steps/step
Note 2: can be controlled with micro-stepping drive in open loop
or in closed loop servo mode
