Every bush can be supplied with different bore size – either in metric series (mm) or in inches- according to customer‘s requirement.
Morover, every bore has a keyway according to UNI 6604 – DIN 6885 – B.S.46:part.1:1958 regulations.
Bushes are made in cast iron EN-GJL-250 UNI EN 1561. If a taperlock sprocket not included in the range of standard is required, a welded hub can be used. The required type of bush depends on the dimension of the welded hub and it is included in the following range: