These shouldered reducers are generally used with a 1/2 inch ID shock eye bearing and a 3/8" diameter bolt. They are not tapered, so the length can easily be ground shorter for tighter installations. Four bushings per package (enough for 2 bearings). Steel bushings with yellow zinc plating.
Small OD: 1/2"
Large (shoulder) OD: 5/8"
Length of shoulder: 5/16"
Installed length: 1-1/4" (assuming typical bearing ball width of 5/8")
Length of small OD section: just under 5/16" (when installed in a typical 5/8" wide ball, the two bushings will not quite meet; a gap between them allows access for a punch for removal)
We also offer Shoulder Bushings for 1/2" Bearings to fit other bolt sizes as well (Part No. 3077-050-Size).