Recommended minimum pulley diameters
| Cable Construction | Tread or Groove Diameter |
|---|---|
 | 3 x 7 - 50 times cable (uncoated) diameter |
 | 7 x7 - 40 times cable (uncoated) diameter |
 | 7 x 19 - 25 times cable (uncoated) diameter |
 | 6 x 37 - 17 times cable (uncoated) diameter |