Rotary table RTH-100

Rotary table RTH-100
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Diameter 100 mm

Aperture 20 mm

Height 34 mm

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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.

Parameter

 

RTH-100

RTH-140

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

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