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This 6903-2RS ball bearing is a high-precision premium quality sealed deep groove 17x30x7 ball bearing made to ABEC 3 precision standards from AXIS
UCTB206-17 Bearing Dimensions
Sheave Weight: 114 LBS
HC206-17 bearing is a normal-duty ball bearing insert made to C3 precision standards and utilizes an eccentric locking collar for securing a 1-1/16" shaft
Bushing Number: 2012
50B30 Sprocket With Stock Bore 50B37 Sprockets This 6903-2RS ball bearing isThis 50B30 sprocket is a durable, high quality, and precision sprocket with 30 hardened teeth. Sprockets that have hardened teeth last longer and are much more durable than those that don't. Something else that is notable about this sprocket is that it fully meets all ANSI Standards, which insures proper contact between the #50 roller chain and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which
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