Variable Pitch 1VP62 Pulley 1-1/8" 120B17 Sprockets The roller of a chain

The roller of a chain is responsible for the sprocket-to-chain contact

With B-series TB pulleys you can use A

This 120BS21 sprocket features a 1-1/4" finished bore with a key-way and two set screws

160B21H 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

Variable Pitch 1VP62 Pulley 1-1/8" 120B17 Sprockets The roller of a chainVariable Pitch 1VP62 Pulley 1 1 8" is designed and engineered in a way that allows for precise adjustments in diameter, which will also correlate to speed adjustment. Our single groove variable pitch pulleys are manufactured with extremely tight thread tolerances and use a high quality cast iron material. They are extremely well balanced to reduce vibrations and are phosphated and painted for corrosion resistance. Besides 1VP62 pulleys with a 1 1 8"