NEEDLE ROLLER BEARING Russian patent published in 1995 - IPC

FIELD: mechanical engineering; antifriction bearings, namely, roller bearings with means precluding flow out of consistent (plastic) grease in service. SUBSTANCE: in needle roller bearing space 4 to be filled with consistent grease is formed in radial direction 5 by cylindrical part 5 of U-section cage 2 and outer race 1 and in axial directions, by end face parts 6 of cage 2 and end face shoulders 7 of outer race 1. Width of end face part 6 of cage 2 is in ratio (0.7-0.8):1 to half the difference in nominal diameters of raceway of outer race 1 and diameter of circumference inscribed in set of needle bearings, and in ratio (7-4):1 to clearance between this part and above-indicated end face shoulder 7 of outer race 1. EFFECT: enhanced reliability of bearing, prevention of grease flowing out. 2 dwg