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……..
Contact us: Wechat/whatsapp/mobile: +86-13083988828
This With detailed requirments, we can also develop your special designed product. a specialized supplier of a full range of chain & sprockets, sprockets, gears, gear racks, V-belts, couplings and reducers， pto shaft, agricultural gearboxes….Standard roller chain & sprocket is available with pitches from 1/2 to 3 inches. Chain & Sprocket numbers are determined by multiplying the pitch by 80 (a 1/2 inch pitch chain & sprocket would be a No. 40 chain & sprocket). A hyphenated suffix indicates multiple strands.28B21 sprocket with a stock bore is a metric roller chain & sprocket sprocket manufactured under ISO and British Standard 228. Our 28B21 sprockets are made with reliability and performance in mind, so we use high-quality carbon steel (CS) and have the sprocket precision cut to ensure maximum performance and wear life. Besides the stock bore we also can supply these sprockets with a specific plain or finished (has key-way and set screws) bore size. We also offer upgrades on our 28B21 sprockets such as black-oxide coatings and heat-treated hardened teeth, hardened teeth increases the durability and wear life of the sprocket while a black oxide coating will create an “anti-rust” coating on the sprocket. Besides the 21 tooth sprocket, we also stock a high-quality 28B roller chain & sprocket and a wide array of roller chain & sprocket accessories. For more information or to get a quote on 28B21 sprockets, please contact us and 1 of our sales team members will be happy to assist you.
28B21 Sprocket Dimensions
- Sprocket Size: 28B21
- Tooth Count: 21
- Pitch Diameter: 298.24mm
- Stock Bore: 40mm
- Maximum Recommended Bore: 108mm
- Hub Dia Diameter (H): 160mm
- Length Thru Bore (L): 64mm
- Sprocket W8: 18.19 kG