10B12 sprockets with a stock bore comes with the standard 12 millimeter inside diameter hole with no key-way or set screws and can be easily machine bored to custom sizes
200A12 Sprocket Dimensions
Size: 2TB124
This 40BS80 sprocket features a 1-1/2" finished bore including a key-way and two setscrews
This 6318-2RS ball bearing is a high-precision premium quality sealed deep groove 90x190x43 ball bearing made to ABEC 3 precision standards from AXIS
45V850E Sheave four-groove 8.50" OD 1.125" Finished Bore 10B12 sprockets with a stockThis 45V850E Sheave uses an E bushing, is directly interchangeable with other manufacturers, is 8. 50" in diameter, and is manufactured in accordance with ARPM Standards for safe operation. With 5V series QD sheaves you can use standard 5V belts, 5VX belts, banded 5V belts, and banded 5XV belts. What separates this 45V850E sheave from the others is that it is made using a high strength cast iron, is phosphate coated, painted, and balanced at the