Industrial pulley 420 mm, 7 grooves, section B

EMMAR POLEA 420 7B is a pulleys reference, within Power transmission. Request a quote for POLEA 420 7B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 420 7B pulley is a power transmission pulley manufactured by EMMAR Accesorios Industriales. It is designed to mount on shafts and transmit motion through section B V-belts. With a 420 mm diameter and 7 grooves, it allows building multi-strand drives in a single body, common in equipment that needs to distribute load across several belts. It is used in industrial machines, production lines and process equipment where drive reliability is key.

This pulley has a 420 mm outer diameter, 7 grooves and section B. It is an in-house manufactured part, EMMAR brand, designed for B-profile V-belts. The multiple grooves allow distributing power across several belts, which reduces the load on each one and improves drive continuity. The 420 mm diameter defines the transmission ratio when combined with a smaller drive pulley. Being in-house production, variants within the same section can be requested.

It is used in machine tool drives, compressors, industrial fans, mills, mixers and conveyors. It also appears in pumping equipment and process lines where power must be transmitted from an electric motor or gear reducer to the working shaft. The combination of 7 grooves with a 420 mm diameter is typical of drives handling medium and high power, where belt redundancy helps sustain service without stoppages due to a single strand breaking.

To select this pulley, take into account the shaft diameter, the type of keyway and the fastening system you will use. Verify that the belt section matches the B profile and that the number of grooves is the one needed for the power to be transmitted. Check the alignment between pulleys and belt tension: poor alignment wears the grooves and shortens the service life of the assembly. If the shaft has a large diameter, it is advisable to evaluate the hub thickness before mounting.

If you need an equivalent pulley or a nearby size, send us the complete part number, the number of grooves and the section. It also helps if you send us the current outer diameter and a photo of the assembly. With that data we can see if there is a pulley in our line that fits or if it is better to manufacture it to measure. We work with power transmission parts and can guide you on the best option for your equipment.

To request a quote for the 420 7B pulley or ask about another size, write to us on WhatsApp and send us the part number MR-POLEA-B7-420. We will reply with the technical information and the corresponding quote. If you have doubts about the section or the grooves, we can also help you identify them.