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What is the center to center measurement for the bolt holes?
A: H-bushings utilize a four-bolt pattern on a 2" circle. Two of the holes are threaded, and two are not. For mounting, the bolts pass through the un-threaded pair and screw into the threaded holes in the pulley to compress the bushing into the tapered bore. For removal, the same bolts are removed and then screwed into the threaded pair in the bushing until they butt against the pulley hub. Then they can be tightened progressively and equally, 'walking' the hub loose. The bolts used are 1/4"-20 thread; 3/4" long.
Date Submitted: 05/20/2018
What size is the .75 H series bushing keyed
A: This bushing has a 3/16" keyway, which is standard on 3/4" shafts.