Contains 13- 3/8" Diameter balls.
FC at the beginning of the part number disgnates a plastic insert which acts to quiet the bearing, also allowing it to be re-greased.
The unique rib feature is designed to help accommodate the variations in tubing I.D. tolerances.
S added to the end of the part number designates a felt seal added to the front of the bearing.
T added to the end of the part number designates a Teflon seal added to the front of the bearing.
Also available with a non-ribbed case which has a 2.265 A dimension. Substitute 2280 with 2265 in the part number to specify this feature.