Industrial pulley 280 mm, 4 grooves, section C

EMMAR POLEA 280 4C is a pulleys reference, within Power transmission. Request a quote for POLEA 280 4C via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 280 4C pulley is a V-belt drive pulley, manufactured by EMMAR in section C with four grooves and a 280 mm diameter. It is used to drive machine shafts from a motor, transmitting torque through belts and maintaining the speed ratio required by the equipment. Because it is in-house manufactured, the groove machining and balancing are controlled, two points that define belt service life and the level of vibration in service.

This item is a pulley with a 280 mm diameter, 4 grooves and section C. The designation POLEA 280 4C summarizes those three data points: the 280 mm outside diameter, the number of grooves (4) and the belt section it accommodates, C. Section C corresponds to wide-profile V-belts, typical of drives with medium and high power. The grooves are machined so that the belt rests on the flanks, not on the bottom, which is the correct way for it to work.

It is used in belt drives on industrial machines: compressors, fans, pumps, mills, conveyor belts and process equipment. It also appears on the output shaft of gear reducers and in applications where revolutions need to be multiplied or reduced with a fixed ratio. Having four grooves allows the load to be distributed among four belts, which lowers the tension per belt and reduces the stress on the shaft bearings. It is a general-purpose pulley for maintenance and equipment assembly.

To mount it, check that the shaft and keyway are clean and free of burrs, and that the pulley fits with a tolerance that does not require heavy blows. Align the driving and driven pulleys with a straightedge or a laser; a misalignment of a few degrees shortens belt life. Tension the belts according to the equipment manual and check the tension after the first hours of operation. If the pulley has more than one groove, all belts must be from the same batch and tensioned equally.

If you need an equivalent pulley or a nearby size, send us the part number POLEA 280 4C by WhatsApp along with the number of grooves, the section and the diameter you are looking for. It also helps if you send us a photo of the old pulley or the shaft drawing, with the bore diameter and the keyway. With that data we check whether there is a pulley in our line that fits or whether it is better to manufacture it to measure. MR Accesorios Industriales has more than 80 years in the business.

MR Accesorios Industriales manufactures this pulley in section C and sells it along with the rest of the power transmission line. If your equipment runs with section C belts and you need to replace a 280 mm pulley with 4 grooves, write to us on WhatsApp and we will send you the quote with the technical data you need to confirm the replacement.