We EPG group one of the Biggest Chain and sprocket manufacturer in China. We provide you most type of industry chains, agricultural chains, conveyor chains and related sprockets etc……..

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This As a result, we have become a comprehensive manufacturer in the motion and control field providing an extensive lineup of products with superior durability, environment-friendliness, and quality.EPG is 1 of the biggest manufacturers in China. We have advanced machines for production and new technology chain & sprocket testing ability . Through adopting new technology from British, German, U.S.A, our products are best sellers all over European, America, and Southeast Asia.assistance needed.40BS57 sprocket features a 1″ finished bore including a key-way and 2 setscrews. It is a durable, high quality, and precision sprocket that fully meets all ANSI Standards which insures proper contact between the #40 roller chain & sprocket and sprocket thus preventing premature wear or breakage. This sprocket is also black oxide coated which increases resistance to the environment and will prevent early rust build up. We also offer stock bore sprockets, custom bore and made to order sprockets, and a full line of #40 roller chain & sprocket. Fore more information, large quantities, or to get a custom sprocket please contact us and we will be happy to assist you.