The SCHNEEBERGER range of recirculating units offers you perfect solutions for your specific applications.
Assessment of the advantages
Parameter: Low displacement force & high level of smoothness
| Rolling element | SK | SKD | SKC | SR | NRT |
|---|---|---|---|---|---|
| - balls | +++ | ++++ | ++++ | n/a | n/a |
| - rollers | n/a | n/a | n/a | ++ | ++ |
Parameter: High loading capacity
| Rolling element | SK | SKD | SKC | SR | NRT |
|---|---|---|---|---|---|
| - balls | ++ | ++ | + | n/a | n/a |
| - rollers | n/a | n/a | n/a | +++ | ++++ |
Legend
++++ best choice | +++ | ++ | + good choice | n/a not available
Performance parameters
| Parameter | SK | SKD | SKC | SR | NRT |
|---|---|---|---|---|---|
| Max. acceleration in m/s² | 50 | 50 | 50 | 50 | 50 |
| Max. speed in m/s | 2 | 2 | 2 | 2 | 1 |
| Operating temperature in °C | -40 to +80 | -40 to +80 | -150 to +200 | -40 to +80 | -40 to +80 |
Material
| Component | SK | SKD | SKC | SR | NRT |
|---|---|---|---|---|---|
| Supporting structure tool steel, hardness in HRC | 58-62 | 58-62 | 58-62 (coated) | 58-62 | 58-62 |
| Rolling element tool steel, hardness in HRC | 58-64 | 58-64 (damping elements made of plastic) | n/a | 58-64 | 58-64 |
| Ceramic rolling element (Teflon® balls are situated between the ceramic balls) | n/a | n/a | ✓ | n/a | n/a |
| Redirection unit | Sizes 1, 2, 9 and 12 made of anodized aluminium Sizes 3 and 6 depending on the length made of plastic or aluminium | Depending on the length made of plastic or aluminium | tool steel, coated | Depending on the length made of plastic or aluminium | Plastic |
Special versions
| Special versions | Order code | SK | SKD | SKC | SR | NRT |
|---|---|---|---|---|---|---|
| Matched (height-matched) | GP | ✓ | ✓ | ✓ | ✓ | ✓ |
| Connection for centralised lubrication | ZS | n/a | n/a | n/a | n/a | ✓ |