1008 Taper Lock Bushing X 19mm Bore Sprocket & Pulley Bushings next you place the chain

next you place the chain gauge in-between the roller chain rollers like the image below

Something else that is notable about this 100B17 sprocket is that it fully meets all ANSI Standards

100B42 sprockets with a stock bore come with the standard 1-1/4" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes

Pitch Diameter: 89

Something else that is notable about this 08B16 sprocket is that it fully meets all ISO Standards

1008 Taper Lock Bushing X 19mm Bore Sprocket & Pulley Bushings next you place the chainThis 1008 taper lock bushing is a high quality, durable, and dependable product that has been precisely manufactured to out last and out perform the competition. 1008 taper lock bushings are used in a wide range of applications including; belt pulleys, sprockets, drum pulleys, drive pulleys, tail pulleys, sheaves, and gears, which are items that we also offer! Additionally this bushing features a 19 millimeter bore with a standard keyway, for more