Set of 2. Replacement Arbor bearings for older model Rockwell/Delta Unisaws with extended Inner Race Bearings.
These are WJB brand rubber sealed bearings that are dimensionally identical to the original New Departure brand bearings.
Bearings have a 17mm ID (d), 40mm OD (D), 12mm wide outer race (Bo), and 16.6mm inner race (Bi).
Early model Unisaws used these extended inner race bearings. Later models used non-extended race bearings where the inner race is the same width as the outer race. You can find our listing for non-extended race bearings in our eBay store or by searching eBay item number "221235222325" for sealed style and eBay item number "223178174598" for metal shielded style.