1.2500" overall width 2.0000" bore diameter roller contact surface polished; raceway with 10 microinches surface finish, roller with 4 microinches surface finish; radial runout of 0.0010 in. total indicator reading; rollers must not vary over 0.0001 in. dia in any one bearing; 100 pct magnaflox inspection per AMS2640; od corners rounded 0.0600 in.; part no. marked on face of ring in accordance with sikorski spec ss-870; oil hole in outer ring optional non-separable, with roller retainer, hardened