B1721-20 Oil Impregnated Bronze Sleeve BearingBost 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

• Direct Acting

Click here for spec sheet: BUCNPP Spec Sheet

An instruction bulletin on mounting and hookup are included with each brake

Click here for spec sheet: NAPL Spec Sheet

Pressure Angle: 14-1/2 Degrees

Pressure Angle: 14-1/2 Degree Pressure Angle

Click here for spec sheets: SNATFL Spec Sheet

Click here for spec sheet: ER Spec Sheet

Click here for spec sheet: UCPX Spec Sheet

Click here for spec sheet: SUCTP Spec Sheet

Click here for spec sheets: SUCSFLX Spec Sheet

Be sure to ask for the Boston Gear compound steel bushings designed specifically for use with these gears