2BK47H Pulley double-groove 4.45" OD Bearings This 100B45 sprocket is a

This 100B45 sprocket is a durable

This 6301 ball bearing is a high-precision premium quality deep groove 12x37x12 ball bearing made to ABEC 3 precision standards from AXIS

This 2BK25 Pulley 3/4" bore is directly interchangeable with other manufacturers v-belt pulleys

the 6301 bearing features raceways that are precision honed to a superb finish

2BK47H Pulley double-groove 4.45" OD Bearings This 100B45 sprocket is aThis two groove 2BK47H Pulley uses an H Series Bushing, is directly interchangeable with other manufacturers, is 4. 45" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. With AK series pulleys you can use A, 4L, B, 5L, AX, BX, AA, BB, and banded belts. What separates this 2BK47H pulley from the others is that it is made using a high grade 35 cast iron, is phosphate coated, painted, and balanced at the factory.