Steel Hubs For Split Taper Bushings
There are two kinds of bores for CM hubs: the pilot bore (can be reproduced into different types of bores, e.g. split bore, hex bore and squate bore,etc.),and finished bore. CW hubs are paired with BTL taper bores. After matching the hubs with the BTL taper bushings.they can meet the requirements for various bore diameters.

to meet the thicknees of the largest pitch. imension “G” can be processed to reflect the largest one. For the small pitch sprocket if the dimension is less than the largest teeth thickness “G”, itwill probably become type C.
When welding, spécifie technology should be used (e.g. sub-arc-welding or carbon dioxide welding,etc.) to ensure the welding quality and avoid disfiguration. If care is not taken, the précision will be reduced and there will be difficultés when using.
When CM/CW hubs are welded with plate wheels, welding should be done at the twosides for C type sprockets and for B type sprockets only the hub side should be welded.
When you want to reproduce the bore for CM hubs into other dimensions for forms, this process should be done after welding to keep ail the run-outs and tolérances.

Configuration : taper