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and precision 28 tooth sprocket that is manufactured to accept a J bushing
Length Through Bore: 6-5/8"
Something else that is notable about this 120BS12H sprocket is that it fully meets all ANSI Standards
100R21 Sprocket Dimensions
120E20 sprockets are manufactured to accept a E type QD bushing which
1B34SH Sheave single-groove 3.75" OD 120B16 Sprockets and precision 28 tooth sprocketThis 1B34SH sheave features one groove, is 3. 75" in diameter, and is designed to use a SH 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 are
