Berges® Spring Tensioning pulley type F325sb interchange with Lenze® Simplabelt size 11.104.70.6.1. for use with wide belts type CW-b 70 and fixed diameter pulley, speed change achieved by changing center distance between sheaves. Diameter 346mm with length through bore of 240mm, one spring on each side of pulley for a total of two springs. Maximum shaft diameter 48mm with standard bores listed for sale, for alternative bores are available contact TVT for non-standard bore quotation.
| Brand | Type | Belt | a H7 | b | dw | Dw | Da | L |
| Lenze | 11.104.70.6.1 | 70x18 | 42, 48 | 190 | 121 | 351 | 360 | 220 |
| Berges | F325sb | 70x18 | 38, 42, 48 | 147 | 117 | 341 | 346 | 240 |