2BK52 Pulley 7/8" Bore 4.5" Stock Bore This 6309-ZZ ball bearing is

This 6309-ZZ ball bearing is a high-precision premium quality deep groove shielded 45x100x25 ball bearing made to ABEC 3 precision standards from AXIS

Variable Pitch 1VP68 Pulley 7/8" is designed and engineered in a way that allows for precise adjustments in diameter

240C45 Sprocket Dimensions

Bearing Size: 6019-ZZ

2BK52 Pulley 7/8" Bore 4.5" Stock Bore This 6309-ZZ ball bearing isThis 2BK52 Pulley 7 8" bore is directly interchangeable with other manufacturers v belt pulleys, it is 4. 95" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. double BK pulleys work with belt types A, 4L, B, 5L, AX, BX, AA, BB, double banded A, double banded B, and double banded BX cogged v belts. What separates this double 2BK52 pulley from the others is that it is made using a high grade 35 cast iron, is