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140B12H 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
Our vibration-damping SAR205-15 bearing is made according to C3 precision standards
R4A-ZZ Ball Bearing Dimensions
Dimension (N): 30
Size: 1B36SH
Premium 60SK40 Sprocket 1.25" Finished Bore 140B12H sprockets with a stockThis 60SK40 sprocket is a durable, high quality, and precision sprocket that is manufactured to accept an SK bushing. Something that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #60 roller chain and sprocket. This also prevents premature wear or breakage and means that the sprocket will directly interchange with other manufactures sprockets. This sprocket is also black oxide coated
