Castings maybe used on other series of pulleys, castings numbers on pulley faces are not the part number. Maximum shaft diameter 42mm with standard bores listed for sale, alternative bores are available with 6-8 week ARO lead time (order Custom bore and a TVT Sales Engineer will contact you to clarify dimensions).
1. When interchanging Lenze to Berges we recommend replacing BOTH the Control (Bearing pulley) and the Tensioning (Spring pulley).
2. Lenze length through bore is 160mm, Berges 145mm.
3. Lenze Diameter 252mm, Berges Diameter 255mm (3mm greater diameter, 1.5mm in radius).
4. Lenze 11.213.25 and Berges RF250b use 47mm wide 28º Variable Speed Belt. CW-b 47. Lenze belt lengths are measured by inside diameter "Li" in millimeter, Berges belt lengths are measured by outside diameter "Lw". Thickness of belt is not relevant to interchange or performance, these may vary with production lot and are not critical measure.
TVT Berges Catalog download in new window.