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and precision 70-tooth sprocket that is manufactured out of high-quality steel
Dimension (B): 48
4mm pitch 16B chain and conforms to ISO and DIN dimensional standards for direct interchangeability
Hub Diameter (A): 6
This 25B28 sprocket is a durable
3B56SD Sheave three-groove 5.95" OD 12B Chain Attachments and precision 70-tooth sprocket thatThis 3B56SD sheave features three grooves, is 5. 95" in diameter, and is designed to use a SD bushing. QD (quick detachable) style sheaves offer a wider selection of bore sizes versus a standard "fixed" bore style sheave. Also because they are a two component part if one component fails the entire part doesn't need to be replaced. All of our sheaves are manufactured out of an extremely durable cast iron, are dynamically balanced at the factory, and
