NN3010M2KC1NA P5 Nachi Cylindrical Roller Bearing Bronze Cage : Tapered Bore 50mm x 80mm x 23mm Made in Japan NN3010M2KC1NA P5 Nachi Cylindrical Roller Bearings Steel Cage Made in Japan the NN3010M2KC1NA P5 inner diameter is 50mm the NN3010M2KC1NA P5 outer diameter is 80mm NN3010M2KC1NA P5 width is 23mm