Single sprocket with hub, pitch 1/2", 21 teeth

MR Piñón simple 1/2" Z21 is a reference of sprockets and gears, within Power transmission. Request a quote for Piñón simple 1/2" Z21 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The simplex sprocket 1/2" Z21 is a sprocket supplied by MR Accesorios Industriales, designed to transmit motion in 1/2" pitch chains. It has 21 teeth and a hub, and is machined from SAE 1045 steel. It is used in power transmissions where a specific speed ratio and direct mounting on the shaft are required. If you need to replace a worn sprocket or build a new transmission, this part number gives you a concrete reference to start your inquiry.

This item is a simplex sprocket with hub with 1/2" pitch and 21 teeth (z). The designation Simplex sprocket 1/2" Z21 sums up the essentials: a single row of teeth, half-inch pitch and twenty-one teeth. The material is SAE 1045 steel, a carbon steel with good machinability and strength, common in transmission parts working under moderate loads. The hub allows direct mounting on the shaft, with the bore and keyway defined in the order.

Sprockets of this type appear in chain transmissions in agricultural machinery, conveyors, elevators, belts and general drive equipment. They are also found in production lines and machine tools where a fixed ratio between two shafts is required. Being 1/2" pitch, it is compatible with chains of that pitch, and the number of teeth defines the transmission ratio together with the driven wheel. It is a wear part: it should be checked when noise, chain jump or deformed tooth profiles appear.

To select the sprocket correctly, take into account the chain pitch, the number of teeth, the shaft diameter and the type of fastening. The hub accepts different finishes: through bore, keyway, set screws or screw fastening. Also check the alignment between sprocket and wheel, the chain tension and the lubrication. A misaligned mounting accelerates wear on teeth and chain, and can generate vibrations throughout the assembly.

To quote an equivalent, send us the part number MR-PINON-SIMPLE-1-2-Z21 or the full designation by WhatsApp. You can also send the pitch, the number of teeth and the shaft diameter, and we will confirm alternatives within the same series. If the sprocket comes with a custom-machined hub, indicate the bore, the keyway and any other mounting condition so the quote is complete.

MR Accesorios Industriales supplies this sprocket and also provides bearings, housings, power transmission, seals, bushings, mounting tools and lubricants since 1945. If you want to move forward, send the part number or the size you need by WhatsApp and we will send you the quote.