Industrial pulley 120 mm, 3 grooves, section B

EMMAR POLEA 120 3B is a pulleys reference, within Power transmission. Request a quote for POLEA 120 3B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 120 3B pulley is a V-belt transmission pulley, manufactured by EMMAR Accesorios Industriales. It has a 120 mm diameter, 3 grooves and section B. It is used to transmit motion between parallel shafts in industrial machines and equipment, where a reliable and easy-to-maintain transmission ratio is needed. As it is of in-house manufacturing, it can be adapted to the mounting requirements.

This pulley has a 120 mm diameter, 3 grooves and section B. Section B corresponds to classic-profile V-belts, suitable for medium power. The three grooves allow mounting three belts in parallel, which distributes the load and improves transmission. The 120 mm diameter defines the speed ratio together with the driven pulley. It is a cast iron or machined steel part, depending on the use, and is balanced to rotate without vibration at the usual working speeds.

It is used in transmissions of machine tools, compressors, fans, pumps, conveyor belts and process equipment. Also in the agricultural sector and in maintenance workshops. It is common in installations where the speed of a motor shaft needs to be changed to a driven shaft with a fixed ratio and without complex maintenance. The three grooves provide margin to adjust the transmitted power according to the number of belts mounted.

To select it, take into account the pitch diameter, the number of grooves and the belt section. Verify that the keyway and the shaft bore match the motor or machine. Balancing and alignment with the driven pulley are key to avoid irregular belt wear. If space allows, choose the largest possible diameter to reduce stress on the belt. Section B accepts standard profile B belts.

If you need a pulley with a different number of grooves, another diameter or a different section, it can be custom manufactured. To request an equivalent or a nearby size, send the full part number, the section, the number of grooves and the diameter. The part number of the original pulley or a photo of the part also works. With that data, the part is identified or the closest one within the in-house manufacturing line is proposed.

MR Accesorios Industriales manufactures this pulley and other transmission parts. If you want to request a quote or ask about a variant, send the part number POLEA 120 3B via WhatsApp. You can also write to us if you need advice on choosing the right pulley for your equipment. We are here to help you find the part you need.