BK57H Pulley single-groove 5.45" OD 40B20 Sprockets This 50BS51 sprocket features a

This 50BS51 sprocket features a 1-3/16" finished bore including a key-way and two setscrews

the more precision a bearing is

For additional information or to get a large quantity quote on 80B23H sprockets

For more information or to get a quote on our SAPF205 bearing

4L/ A Minimum Datum: 2

BK57H Pulley single-groove 5.45" OD 40B20 Sprockets This 50BS51 sprocket features aThis BK57H Pulley uses an H Series Bushing, is directly interchangeable with other manufacturers, is 5. 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, and BB belts. What separates this BK57H 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. Using the grade 35