Industrial pulley 550 mm, 1 groove, section A

EMMAR POLEA 550 1A is a pulleys reference, within Power transmission. Request a quote for POLEA 550 1A via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 550 1A pulley is a V-belt drive pulley, manufactured by EMMAR Accesorios Industriales. It has a 550 mm diameter, a single groove and section A. It is used to drive machine shafts, fans, pumps and conveyors where a simple and reliable transmission ratio is needed. As it is in-house manufactured, we control the machining and balance so that the belt seats evenly and lasts as long as it should.

This pulley has a 550 mm outside diameter, 1 groove and section A. Section A corresponds to classic narrow-profile V-belts, and the single groove defines a single-belt drive. The 550 mm diameter places it among large pulleys, designed for shafts with relatively low speed and high torque. The groove is machined with the angle and depth required by section A so that the belt seats on the flanks and not on the bottom.

It is used in equipment where speed must be reduced and force increased: centrifugal fans, water pumps, screw compressors, conveyor belts and mixers. It also appears in agricultural machinery and in process lines already set up for section A belts. When the shaft turns slowly and torque is high, a large single-groove pulley simplifies mounting and avoids adding grooves that will not be used.

To select it, check that the shaft diameter matches the pulley bore and that the keyway is suitable. Check the center distance and the available belt length: with a 550 mm diameter, the belt must be considerably longer than on a small pulley. The pulley is mounted with a key and secured with a set screw or with a taper bushing, depending on the case. It is advisable to align the pulleys with a straightedge or laser so that the belt does not come off or wear on one side.

If you need another size, another number of grooves or a pulley for section B, send us the part number or the designation shown on the machine. We can also evaluate a replacement if the original pulley is no longer available: with the diameter, section and shaft diameter, it is enough to find an equivalent. If you have doubts, send us a photo of the old pulley and the belt it uses, and we will guide you.

To request a quote for this 550 1A pulley or any other from the transmission line, write to us on WhatsApp with the part number MR-POLEA-A1-550. We will reply with manufacturing alternatives. MR Accesorios Industriales manufactures pulleys, split plummer block housings and ANSI chains, and sells bearings, seals and lubricants for industrial maintenance.