Double sprocket with hub, pitch 3/8", 21 teeth

MR Piñón doble 3/8" Z21 is a sprockets and gears reference, within Power transmission. Request a quote for Piñón doble 3/8" Z21 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The double sprocket with hub, 3/8" pitch and 21 teeth, is a power transmission component that is mounted on shafts to transmit motion through chains. Its double-row design allows two chains to mesh in parallel, which is useful in systems that require greater drive capacity or redundancy. Supplied by MR in SAE 1045 steel, it is a robust and versatile part for various industrial applications.

This item is a double sprocket with hub, identified as Double sprocket 3/8" Z21. Its main attributes are: pitch 3/8", number of teeth 21, material SAE 1045 steel and type double sprocket with hub. The designation indicates that it is a part with two toothed rings integral to a central hub, which allows mounting two chains with the same pitch. SAE 1045 steel is a medium-carbon steel, suitable for parts subjected to moderate mechanical stresses and that can be heat treated to improve their wear resistance.

Typical applications of this sprocket include chain drive systems in agricultural machinery, conveyors, lifting equipment and other industrial installations where the transmission must be duplicated or the load capacity increased. Because it has a double row, it is common in configurations where two chain lines must be synchronized or where a larger contact surface is sought to reduce wear. It can also be used in mechanisms with a specific transmission ratio, thanks to its number of teeth.

For assembly, keep in mind that the sprocket must be correctly aligned with the chain and the shaft. Verify that the chain pitch matches the 3/8" of the sprocket and that the number of teeth 21 is suitable for the desired transmission ratio. The hub allows fastening the sprocket to the shaft by key or set screw, depending on the design. It is advisable to check concentricity and parallelism between the shafts to avoid premature wear. If you need advice, contact us.

If you require a sprocket with a different number of teeth, a different pitch or a single instead of double configuration, we can source it. MR Accesorios Industriales has more than 80 years of experience in power transmission and supplies sprockets. To request an equivalent or a nearby size, simply send us the part number MR-PINON-DOBLE-3-8-Z21 or the specifications you need and we will quote shortly.

For inquiries about this product or to request a quote, write to us by WhatsApp. You can send us the part number MR-PINON-DOBLE-3-8-Z21 and we will reply with the information you need. At MR Accesorios Industriales we are here to help you find the right part for your application.