Sprockets

A sprocket engages a roller chain to carry motion and torque between parallel shafts. You'll find them on conveyors, elevators, farm equipment, process machinery and general-purpose drives. Choose one by chain pitch, tooth count (Z), number of strands and the way it mounts to the shaft: finished bore, bore with keyway, or taper bushing.

Pitch, the distance between roller centers, is what makes a sprocket fit a given chain, so it comes first. MR part numbers spell out pitch and teeth: Single sprocket 1/2" Z8 is a single-strand sprocket for 1/2 inch pitch with 8 teeth. At SKF, PHS 05B-1A10 fits ISO 05B chain, 8 mm pitch, one strand. Dodge's 35BTL18-1008 packs in the chain number 35, 18 teeth and the 1008 taper bushing it mounts with.

Also confirm the shaft diameter, the strand type and the clear width available on the shaft. Sprockets with few teeth run with more impact and wear than larger ones, so avoid going too small on the driving sprocket, and keep sprocket and chain in line. A taper bushing makes mounting and removal fast and lets one sprocket fit several shaft sizes.

We supply sprockets from SKF, Dodge and the MR brand. For a quote, send the part number, or the chain pitch, tooth count, strand count and shaft diameter. If you have the old sprocket in hand, a photo plus the bore and outside diameter is enough to identify it. Send it over and we'll reply promptly.