A 6C 7-25B21 is a 21-tooth sprocket for #25 roller chain, with a 0.25-inch bore, 1.81-inch outside diameter, 5/8-inch hub length, and a 33/64-inch hub diameter, secured by a #10-32 set screw. It is made of steel and designed for use with 1/4-inch pitch roller or ladder chains.
Chain and sprocket drives are often used where positive synchronization between shafts and transmission of substantial torque are required. They are one of the more frequently used methods of power transmission, providing greater power than belts. Highly efficient, a single chain can drive several shafts and is used for both long and short distances. Adverse conditions, such as temperature and environment, do not affect their running. Other advantages include compact size and low maintenance costs. Chain drives are found in a wide range of power transmission applications, including bicycles, agricultural machinery, machine tools, conveyors, business machines, electronic or electro-mechanical devices, etc.
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | ANSI Roller Chain Sprockets |
| Product Number | A 6C 7-25B21 |
| Product Name | 0.25 (#25) Pitch, 21 Teeth, 0.25" Bore, Metal roller chain sprocket |
| Pitch | 25 (1/4") |
