Industrial pulley 120 mm, 4 grooves, section A

EMMAR POLEA 120 4A belongs to pulleys, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for POLEA 120 4A and any equivalents.

The EMMAR 120 4A is a V-belt pulley made in-house by MR. It measures 120 mm in diameter and carries four grooves for A-section belts. By mounting multiple belts side by side, it distributes the load across them. The pulley transmits motion from a motor or gear reducer to one or more shafts, keeping the drive ratio steady. It suits equipment that runs at constant speed and needs minimal upkeep, such as fans, compressors, pumps and conveyors.

The 120 mm diameter sets the transmission ratio when paired with the driven pulley. Four A-section grooves accept classic narrow-profile V-belts; running four belts in parallel spreads the load. The grooves are ground so each belt seats evenly, which helps wear stay uniform. As an in-house manufactured EMMAR product, it is built for industrial duty where robustness and repeatability matter.

Typical applications include centrifugal fans, screw compressors, centrifugal pumps, belt conveyors, mixers and machine tools. You will also find it in multiple-drive systems where extra power is needed without widening the belt. With four grooves, it is common in drives that start under load or run many hours per day. In process plants, workshops and water treatment facilities, it links the motor to the machine shaft.

During installation, make sure the shaft and keyway are clean and free of burrs. The pulley is held by a key and set screw or by a taper bushing, depending on the hub design. Align the pulleys with a straightedge or laser so belts do not come off or wear on one side. Set tension per the equipment manual: too little causes slipping, too much stresses the bearings. Check parallelism and concentricity before start-up. With four grooves, all belts must be the same length and in good condition.

For a replacement, send the part number POLEA 120 4A or the diameter, groove count and section from the equipment nameplate. We can also review variants with a different diameter or number of grooves within the same A-section. If you are unsure about mounting or hub type, ask us and we will guide you. Because we manufacture in-house, we can adjust the part to your needs. Message us on WhatsApp and we will quote you shortly.

MR Industrial Accessories makes this pulley in its workshops and supplies it alongside belts, bushings and bearings so you can assemble the complete set. If you already have the part number, send it by WhatsApp for a quote. If you do not have it, tell us what machine you are repairing and we will help you identify it.