Single sprocket with hub, pitch 3/8", 43 teeth

MR Piñón simple 3/8" Z43 belongs to sprockets and gears, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for Piñón simple 3/8" Z43 and any equivalents.

A hub-style simplex sprocket for 3/8" pitch chain, built by EMMAR in SAE 1045 steel and supplied by MR Industrial Accessories. Because the hub is part of the sprocket body, it mounts straight onto the shaft with a key or set screw, so no separate bushing is needed. It suits low and medium speed drives where a quiet, steady reduction matters.

The designation to work from is Simplex sprocket 3/8" Z43, part number MR-PINON-SIMPLE-3-8-Z43. Break it down this way: simplex (single strand), 3/8" chain pitch, Z43 meaning 43 teeth. The material is SAE 1045 carbon steel, which offers good machinability and strength for moderate power transmission. The hub is the raised center section machined to the bore size you specify, and that bore is what ties the sprocket to the shaft.

Typical installations include chain conveyors, packaging lines, agricultural equipment, lifting systems and general machinery drives. With 43 teeth, this size fits ratios where the driven shaft turns slower than the driving shaft. It also works well as an idler or return sprocket on long chain runs, where smooth chain engagement reduces wear on the links.

When selecting, confirm three things: the chain pitch (3/8"), the tooth count (43) and the shaft diameter at the mounting point. The hub can be secured with a key or a set screw, and alignment with the mating sprocket should be checked before startup to prevent uneven wear. If the ratio calls for something different, other tooth counts in the same 3/8" series are available.

If the exact size is not what you need, a custom sprocket can be made or an equivalent suggested. Send the part number MR-PINON-SIMPLE-3-8-Z43, or simply the pitch, tooth count and required shaft diameter, by WhatsApp or email. MR Industrial Accessories serves customers throughout the United States and in several Latin American countries, and also manufactures split plummer block housings, roller chains and sheaves.