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Item description/product images

DescriptionMaterial:Base and rotary table aluminium alloy.
Hollow shaft stainless steel.
Pre-loaded worm gear steel.
Claw coupling aluminium with polyurethane coupling spider.
Version:Aluminium alloy anodised.Note for ordering:The unit is supplied with the position of cable outlet or control unit as shown in the drawing.Note:Rotary positioning stages for motorised adjustment and positioning tasks. The pre-loaded worm gear runs virtually play-free. The bearing of the worm shaft offers maximum radial rotational accuracy. Cables can be routed through the large bore in the hollow shaft. The adjustable positioning ring is used to determine the rotational reference point to the position of the assembled part. Proximity switches can be mounted with the optionally available sensor holder (21094). The suitable programming software and interface cable for the stepper motor with positioning control are available as accessories (25000-15).
The stepper motor with a resolution of 200 increments per rotation allows a single direction calculated positioning accuracy of 0.005 mm. The absolute single direction positioning accuracy is 0.01 mm. The system can be operated with a duty cycle of 100%.

Can be combined with all other parts of the same size.
Technical data:21085-08*:
Transmission ratio: 40:1
Backlash: <0.12°
Radial play: <0.02 mm
Max. input speed: 600 rpm
Max. duty cycle: 100 %
Required input torque: 0.15 Nm
Rigidity: see diagram
Rotation: 360°, infinite
Application temperature: +10 °C to +50 °C

21085-12*:
Transmission ratio: 55:1
Backlash: <0,1°
Radial play: <0.02 mm
Max. input speed: 600 rpm
Max. duty cycle: 100 %
Required input torque: 0.15 Nm
Rigidity: see diagram
Rotation: 360°, infinite
Application temperature: +10 °C to +50 °C
Special features:
RoHS
DownloadHere is all the information as a PDF datasheet:

Are you looking for CAD data? These can be found directly in the product table.
 Datasheet 21085 Positioning stages rotary with coaxial electric drive 432 kB
 Step motor: software and handbook 5,2 MB

Drawings

Positioning stages rotary with coaxial electric drive
Positioning stages rotary with coaxial electric drive

Item selection/filter

Order No.

SizeFormForm-TypeCable outlet alignmentControl alignmentCADAcc.PriceOrder
21085-0808Dwithout motor-- 1,068.38 €
21085-08118Ewith stepper motorright- 1,164.39 €
21085-08128Ewith stepper motorbeneath- 1,164.39 €
21085-08138Ewith stepper motorleft- 1,164.39 €
21085-08148Ewith stepper motorabove- 1,164.39 €
21085-08218Fstepper motor with control-right 1,673.21 €
21085-08228Fstepper motor with control-beneath 1,673.21 €
21085-08238Fstepper motor with control-left 1,673.21 €
21085-08248Fstepper motor with control-above 1,673.21 €
21085-12012Awithout motor-- 1,089.21 €
21085-121112Bwith stepper motorright- 1,183.94 €
21085-121212Bwith stepper motorbeneath- 1,183.94 €
21085-121312Bwith stepper motorleft- 1,183.94 €
21085-121412Bwith stepper motorabove- 1,183.94 €
21085-122112Cstepper motor with control-right 1,744.92 €
21085-122212Cstepper motor with control-beneath 1,744.92 €
21085-122312Cstepper motor with control-left 1,744.92 €
21085-122412Cstepper motor with control-above 1,744.92 €
Size

D2D3D4D5HH1H2H3H4H5LL1L2Filter
853,63612H7M44016,5104224,57022,644
12806020M64622,513636-993154
SizeF1
N
F2
N
F3
N
M1
Nm
M2
Nm
Filter
8200200801,21,8
1250050020033
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Positioning unit
United States
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