B1822-20 Oil Impregnated Bronze Sleeve Bearing 1-1/4"-7 Thread and most come with a

and most come with a selection of bore diameters

Click here for spec sheets: SNATFL Spec Sheet

" In other words

Boston Gear change gears are used primarily on machine tools to provide different cutting speeds while using a constant speed input

B1822-20 Oil Impregnated Bronze Sleeve Bearing 1-1/4"-7 Thread and most come with aBost 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