Industrial pulley 450 mm, 7 grooves, section B

EMMAR POLEA 450 7B is a pulleys reference, within Power transmission. Request a quote for POLEA 450 7B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 450 7B pulley is a V-belt drive pulley, manufactured by EMMAR Accesorios Industriales. It has a 450 mm diameter and 7 grooves for section B belts. It is used to transmit power between parallel shafts in industrial equipment, with the advantage that being in-house manufactured it can be adapted to different mounting configurations. It is a key part in transmission systems that require several belts working in parallel to distribute the load.

This pulley has a 450 mm outer diameter, 7 grooves and is designed for section B belts. Section B is one of the most used in industrial power transmission: it accepts V-profile belts that seat in the grooves. Having 7 grooves, it allows up to 7 belts to be mounted in parallel, which multiplies transmission capacity and provides redundancy: if one belt fails, the others keep working. The 450 mm diameter defines the transmission ratio when combined with another pulley in the system.

It is used in machines that need to transmit a lot of power with little maintenance: screw compressors, mills, mixers, conveyor belts, industrial fans and high-flow centrifugal pumps. Also in mining, cement and treatment plant equipment. In all these cases, the 7-groove pulley is chosen when torque is high and the aim is to distribute the load among several belts to extend the service life of the assembly.

To mount it, verify that the shaft has the appropriate diameter and keyway, and that the pulley is aligned with the drive pulley. Alignment is critical: a misalignment of a few degrees wears the grooves and belts unevenly. Belt tension must be the one recommended by the belt manufacturer; if too loose, they slip, and if too tight, they overload the shaft bearings. Periodically check groove wear: when the profile becomes rounded, the belt loses grip.

If you need a pulley with a different number of grooves, another diameter or for a different section (A, C, D), it can be custom manufactured. We can also evaluate the replacement of an existing pulley: send us the old code, a photo or a sketch with the main measurements (outer diameter, shaft diameter, number of grooves and section). With that data, the technical team at MR Accesorios Industriales looks for the equivalence or the closest size within the in-house manufacturing line.

To quote this 450 7B pulley, write to us via WhatsApp with the code MR-POLEA-B7-450. If you have doubts about the section, number of grooves or diameter, you can also consult us: we help you define the correct pulley for your transmission. We work with made-to-order manufacturing for special sizes.