NN3030M2KC1NA P4 Nachi Cylindrical Roller Bearing Bronze Cage : Tapered Bore 150mm x 225mm x 56mm Made in Japan NN3030M2KC1NA P4 Nachi Cylindrical Roller Bearings Steel Cage Made in Japan the NN3030M2KC1NA P4 inner diameter is 150mm the NN3030M2KC1NA P4 outer diameter is 225mm NN3030M2KC1NA P4 width is 56mm