Industrial pulley 400 mm, 3 grooves, section B

EMMAR POLEA 400 3B is a pulleys reference, within Power transmission. Request a quote for POLEA 400 3B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 400 3B pulley is a V-belt drive pulley manufactured by EMMAR Accesorios Industriales. It has a 400 mm diameter, 3 grooves and section B, which makes it suitable for transmitting power in equipment that requires several belts in parallel. It is used in industrial machines, fans, compressors and transmission systems where a robust and balanced pulley is needed. Being in-house manufacturing, MR controls the machining and quality of each part.

This pulley is identified by its POLEA 400 3B designation: 400 mm diameter, 3 grooves and section B. Section B corresponds to V-belts with a B profile, and the 3 grooves allow up to three belts to be mounted in parallel to distribute the load. The 400 mm diameter defines the transmission ratio when combined with a drive pulley. It is a cast iron or machined steel part, with ground grooves for correct belt seating. In-house manufacturing by MR, with dimensional control on every batch.

Typical applications of a 400 mm pulley with 3 grooves, section B, include industrial fans, screw compressors, centrifugal pumps, mills, mixers and conveyors. It is also used in machine tools and process equipment where power must be transmitted with several belts to reduce the load per groove. In installations where space is limited, this pulley makes it possible to obtain a given transmission ratio with a larger diameter, while keeping the number of grooves required for the power needed.

To mount this pulley, check that the shaft has the diameter and key suitable for the pulley bore. Aligning the drive and driven pulleys is essential to avoid irregular belt wear and vibration. Belt tension must be the one recommended by the belt manufacturer; excessive tension overloads the bearings and insufficient tension causes slipping. If you are replacing an existing pulley, compare the outside diameter, the number of grooves, the section and the bore diameter. If in doubt, consult MR Accesorios Industriales.

If you need a pulley with a different number of grooves, another diameter or a different section, MR can manufacture it or source it. To request an equivalent or a nearby size, send the part number POLEA 400 3B by WhatsApp together with the data of the original pulley: diameter, grooves, section and shaft diameter. You can also indicate the machine or equipment where it is installed. With that data, the technical team at MR Accesorios Industriales will advise you and send you the quote.

To request a quote for this pulley or ask about a variant, write to MR Accesorios Industriales on WhatsApp and mention the part number POLEA 400 3B. We'll reply with the manufacturing alternatives. More than 80 years of experience in power transmission back us.