Single sprocket with hub, pitch 3/4", 9 teeth

MR Piñón simple 3/4" Z9 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" Z9 and any equivalents.

This simplex sprocket with hub is identified by the designation 3/4" Z9, which means it has a single row of teeth, a pitch of 3/4 inch, and 9 teeth. It is supplied by MR Industrial Accessories and manufactured by EMMAR in SAE 1045 steel. The hub provides a mounting point on shafts, where it can be secured with a set screw, a key, or both, depending on the machine design. It is a power transmission component used when a short ratio and good wear resistance are required.

The part number MR-PINON-SIMPLE-3-4-Z9 covers this sprocket. The 3/4" pitch determines the chain size it accepts, while the 9 teeth set the transmission ratio and the linear speed of the chain. Because it is a simplex type, it has one row of teeth and a central hub for shaft mounting. SAE 1045 steel gives the sprocket a balance of toughness and machinability, and it can be heat treated later if the application calls for harder tooth flanks.

Typical uses include chain drives on conveyors, elevators, agricultural equipment, packaging lines, and linear motion systems. It also appears in gearboxes and other mechanisms where a low tooth count is needed to achieve a specific ratio. The material handles moderate loads and surface wear, and it is common in both replacement work and new equipment builds.

When selecting this sprocket, confirm that the chain pitch is 3/4" and that 9 teeth provide the ratio you need. Check the shaft diameter and how the hub will be fastened: set screw, key, or both. Also review sprocket-to-chain alignment, lubrication, and chain tension. For severe duty, consider heat treatment or a more wear-resistant material. Proper selection helps avoid premature failure and noise.

If you need an equivalent, send the current part number, number of teeth, pitch, and a photo or sketch showing outside diameter, hub diameter, bore, and width. With that information we can identify the part or suggest an alternative from our line. Custom sprockets can also be sourced when volume justifies it. Ask about other sizes in the 3/4" pitch series.

To request a quote for this simplex sprocket 3/4" Z9 or other sizes, send the part number MR-PINON-SIMPLE-3-4-Z9 on WhatsApp. Our team can advise on the right part for your application and supply power transmission components to meet your equipment needs.