Contains 9 - 5/16" Diameter balls and a Nylon Retainer.
The Inner race is a hardened carbon steel ring with a Polypropylene Hex insert. The Insert allows for the ability to re-grease the bearing and reduce noise.
These bearings are produced with a 16 teeth per inch knurl on the outside body of the bearing, (A Dimension), to assist in the assembly of the roll.
May be ordered with light oil or grease packed lubricant.
DS following the part number designates a front and a back Nitrile seal. The DS is standard on the FR Series.