NN3009M2KC1NA P4 Nachi Cylindrical Roller Bearing 45mm x 75mm x 23mm Bronze Cage : Tapered Bore Made in Japan NN3009M2KC1NA P4 Nachi Cylindrical Roller Bearings, Steel Cage, Made in Japan, the NN3009M2KC1NA P4 inner diameter is 45mm, the NN3009M2KC1NA P4 outer diameter is 75mm, NN3009M2KC1NA P4 width is 23mm.