CB4880 Bronze Cored Bar 1-1/2" Bore Click here for spec sheets:

Click here for spec sheets: CUCNPFB Spec Sheet

Click here for spec sheet: UCFB Spec Sheet

All Boston Gear change gears are manufactured with a double key to accept the compound steel bushings that connect two gears together

Collars include stainless steel screws

CB4880 Bronze Cored Bar 1-1/2" Bore Click here for spec sheets:Bost Bronz is Boston Gears all purpose, oil impregnated, porous bronze bearing material. It is manufactured using the powdered metal process with the purest metal powders. This process ensures the uniform distribution of pores between the bronze particles which absorb the oil by capillary action. In addition, Bost Bronz has a self contained oil supply (approximately 20% by volume) which provides a uniform protective film over the entire bearing