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It is equally important that worms and worm gears used together must have the same diametrical pitch and threads
Porous flanged bronze bearing is press-fit in sturdy zinc die cast sphere with felt strip for lubrication
Click here for spec sheets: SNA Spec Sheet
helical gears with opposite-hand helix angles are required
Click here for spec sheets: CUCNPFCS Spec Sheet
NBR10 Steel Stem Pinion 0.313" Width It is equally important thatBoston Gears stem pinions feature small numbers of teeth that are cut integral to the steel shaft. Using a special, enlarged pitch diameter minimizes the undercutting of the teeth. When run with standard stock spur gears, stem pinions increase the ratios normally found in spur gear drives. Please note: Stem pinions are not intended to be operated with each other, with internal gears, or with eleven tooth spur gears. They will, however, run
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