... (outer ring, inner ring, and roller assembly) Roller: barrel shaped rollers Series: 30200, 30300, 31300, 32000, 32200, 32300, 32900, 33000, 33100 ... Application: car wheels, large-scale machine tool spindle, power reducers, conveyor rollers, heavy gear, winches, cranes and rolling equipment Size: d: 15 ...