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Click here for spec sheets: SNASFL Spec Sheet
Pressure Angle: 20 Degrees
always remember that the difference in the number of teeth between the internal gear and pinion should not be less than 15 (14 1/2° PA) or 12 (20° PA)
the ratio should be kept low
B1620-12 Oil Impregnated Bronze Sleeve Bearing 1/2" Hub 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
