Industrial pulley 310 mm, 3 grooves, section B

EMMAR POLEA 310 3B is a pulleys reference, within Power transmission. Request a quote for POLEA 310 3B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 310 3B pulley is a power transmission pulley from in-house manufacturing, EMMAR Accesorios Industriales brand. It has a 310 mm diameter, 3 grooves and section B, and is used to transmit motion between shafts by means of V-belts. It is a part designed for machines that need a stable transmission ratio and good heat dissipation at the belt-pulley contact. It is mounted on cylindrical shafts with a keyway and is aligned with the drive pulley to prevent premature wear.

This item is a pulley with a 310 mm diameter, 3 grooves and section B. The designation POLEA 310 3B summarizes those three variables: the outer diameter, the number of grooves and the belt profile it accepts. The grooves are machined so that the belt seats evenly and does not come off while running. The part is manufactured at MR with dimensional control, so that the diameter and the pitch between grooves are kept within what is expected for the series. It is delivered ready to mount, with the bore and keyway according to the customer's request.

The typical applications of a 3-groove section B pulley appear in drives where the load needs to be distributed among several belts: screw compressors, industrial fans, mills, mixers, conveyor belts and machine tools. It is also used in pumping equipment and in low and medium power transmission systems. Having three grooves allows it to keep operating with a margin if one belt degrades, and makes staggered replacement easier without stopping production completely.

To mount this pulley, check that the shaft has the correct diameter and keyway, and that the drive pulley is aligned in the same plane. Angular or parallel misalignment accelerates wear on the belt and the grooves. Tension must be the recommended one for section B: if it is loose, it slips; if it is excessive, it stresses the equipment's bearings. Check the condition of the grooves before installing new belts: burrs or wear at the bottom change the seating and shorten the service life of the assembly.

If you need an equivalent pulley or a nearby size, send us the part number POLEA 310 3B by WhatsApp along with the number of grooves, the section and the diameter you are looking for. We can also evaluate variants with a different bore, keyway or number of grooves within the same section. If you have the original pulley on hand, send us a photo or the shaft and groove measurements, and we will confirm the alternative that best fits your machine.

At MR Accesorios Industriales we manufacture pulleys, split plummer block housings and ANSI roller chains, and we distribute bearings, power transmission, seals, bushings, mounting tools and lubricants. With more than 80 years of experience, we work with workshops, plants and industrial maintenance. If this pulley is not the one you need, write to us anyway: we have a pulley line in different sections and diameters. Send the part number by WhatsApp and we'll quote you.