Single sprocket with hub, pitch 1/2", 40 teeth

MR Piñón simple 1/2" 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 1/2" Z40 and any equivalents.

This simplex sprocket with hub is built for 1/2" pitch chain and carries 40 teeth. It mounts on a shaft and transmits motion through the chain, with the hub allowing fixing by set screw or key depending on how the equipment is designed. MR supplies it in SAE 1045 steel, a grade that can be machined and later heat treated when the application calls for it. It is intended for replacements and transmission assemblies in agricultural, industrial and transport machinery.

The part is a single-row toothed wheel with a central hub, identified by 1/2" pitch and 40 teeth. The pitch tells you which chain it meshes with; the tooth count sets the transmission ratio. The hub provides a mounting surface on the shaft, and the fixing method—screw, key or set screw—depends on the machine design. Material is SAE 1045 steel.

You will find this sprocket in chain drives on agricultural equipment, conveyors, elevators, machine tools and general industrial machinery. It suits both low-speed, high-load drives and systems where a specific ratio is required. SAE 1045 steel handles moderate stresses, and if wear resistance needs to be higher, the part can be heat treated. Typical uses include replacing a worn sprocket or building a new transmission.

When selecting, confirm the chain pitch (1/2"), the number of teeth (40) and the shaft diameter where it will sit. Check that the hub dimensions match the shaft and the fixing system you plan to use. For high loads or high speeds, consider whether additional heat treatment is needed. Also verify alignment between sprocket and chain to avoid premature wear. Our technical team can help if you are unsure.

If you are looking for an equivalent, send the item code or the details you have: pitch, tooth count, hub type and shaft diameter. With that information, we review similar options in the line MR supplies or assess the possibility of a custom solution. We can also advise on compatibility with chains and other transmission components, so you find the part that fits your equipment.

To request a quote for this simplex sprocket 1/2" Z40 or to ask about other sizes, send the part number via WhatsApp to MR. We will reply with the technical and commercial information you need to move your project or replacement forward.