NN3019M2KC1NA P4 Nachi Cylindrical Roller Bearing Bronze Cage : Tapered Bore 95mm x 145mm x 37mm Made in Japan NN3019M2KC1NA P4 Nachi Cylindrical Roller Bearings, Steel Cage, Made in Japan, the NN3019M2KC1NA P4 inner diameter is 95mm, the NN3019M2KC1NA P4 outer diameter is 145mm, NN3019M2KC1NA P4 width is 37mm.