Single sprocket with hub, pitch 3/4", 40 teeth

MR Piñón simple 3/4" Z40 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 3/4" Z40 and any equivalents.

This simplex sprocket with hub has a 3/4" pitch and 40 teeth (Z40), and is made from SAE 1045 steel. The hub is the raised center section that lets you mount the sprocket directly on a shaft, so no separate hub adapter is needed. It is a power transmission component that meshes with the chain to move the driven equipment. MR supplies this sprocket for both replacement and new assembly work.

The 3/4" pitch is the distance between the teeth and must match the chain pitch exactly for correct meshing. The 40 teeth (Z40) determine the speed ratio when paired with a driving sprocket. The SAE 1045 carbon steel gives the part wear resistance and toughness for continuous operation. The hub bore is sized to fit the shaft, and set screws can be used for fastening when the shaft does not have a keyway.

Typical applications include chain drives on conveyors, elevators, mixers, packaging machines and linear motion systems. Plants in the food, chemical and bulk material handling sectors use this type of sprocket where a robust drive and simple maintenance are required. The integrated hub simplifies mounting on shafts that need extra fastening or that lack a keyway.

When selecting a replacement, confirm the chain pitch matches 3/4", the tooth count suits your desired ratio, and the hub bore is compatible with the shaft diameter. Check that set screws remain accessible after installation. Verify alignment between sprocket and chain, and lubricate according to the operating conditions. If the shaft is smaller than the bore, a bushing can be machined or the hub adapted, always respecting the SAE 1045 material.

To find an equivalent sprocket, send the current part number, number of teeth, pitch and shaft diameter. With that information, the team can suggest an alternative from the supplied line or a similar solution. Custom supply can also be evaluated if the application requires it.

For a quote on this simplex sprocket 3/4" Z40 or to ask about other sizes, send the part number via WhatsApp or email. MR Industrial Accessories serves customers across the United States and in several Latin American countries, and the team can help you choose the right part.