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21161-20_BCounter bearing for rotary positioning stage, Form B |
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Item description/product images |
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DescriptionMaterial:Body made of aluminium.
Hollow shaft made of stainless steel.
Balls made of steel.Version:Anodised aluminium.
Bearing shell PTFE coated.Note:Counter bearings can be combined with the rotary positioning stages (21160, 21161 and 21161-10) to support long structures that are to be positioned in a rotating manner.
The properties of the rotary disc of counter bearings are similar to those of floating bearings, as they are able to compensate for axial and angular misalignments.
Plain bearings do not require any maintenance due to the PTFE coating.
Furthermore, plastic sealing elements protect the counter bearings from contamination.
Dimensions and hole patterns are largely identical to those of rotary positioning stages (21160, 21161 and 21161-10). Special features: DownloadHere is all the information as a PDF datasheet:
Are you looking for CAD data? These can be found directly in the product table.
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| Order No. | Size | Form | Form definition | H | H1 | H3 | L2 | L3 | L4 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | CAD | Acc. | Price | Order |
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| 21161-20-112 | 12 | B | with scale | 38 | 12,5 | 4 | 43 | 60 | 12 | 80 | 60 | 15 | M6 | 6,5 | M6 | M06 |  | | 301.78 € | | | 21161-20-108 | 8 | B | with scale | 28 | 10 | 4 | 29 | 36 | 10 | 54 | 36 | 10 | M4 | M5 | M4 | M5 | | | 276.66 € | |
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