BK52 Pulley 5/8" Bore filter_60B22-SB and 25:1 size 3 gearboxes

and 25:1 size 3 gearboxes

This 623 Bearing is a high-precision premium miniature ball bearing made to ABEC 3 precision standards from AXIS

Note: type A 81X rooftop chain is available upon request

140B26H sprockets with a stock bore comes with the standard 1-1/2" inside diameter hole with no keyway or set screws and can be easily machine bored to custom sizes

Combining these features creates a high-strength and performance-based thermoplastic SSUCTPF206-19 bearing unit

BK52 Pulley 5/8" Bore filter_60B22-SB and 25:1 size 3 gearboxesThis BK52 Pulley 5 8" bore is directly interchangeable with other manufacturers, is 4. 95" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. It works with belt sizes A, 4L, B, 5L, AX, BX, AA, and BB. What separates this BK52 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 cast iron offers a higher tensile