Industrial pulley 250 mm, 3 grooves, section B

EMMAR POLEA 250 3B is a pulleys reference, within Power transmission. Request a quote for POLEA 250 3B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The POLEA 250 3B industrial pulley is a power transmission component that mounts on a machine shaft to transmit motion through V-belts. With a 250 mm diameter, 3 grooves and section B, this pulley allows building drives with several belts in parallel, which increases torque capacity and improves system reliability. It is a key part in equipment that needs to maintain speed and power steadily.

This pulley is manufactured by EMMAR in section B, with a 250 mm diameter and 3 grooves. Section B corresponds to classic-profile V-belts, suitable for medium power and moderate peripheral speeds. The three grooves allow the load to be distributed among several belts, which reduces the individual stress and provides fault tolerance: if one belt is damaged, the remaining ones can keep transmitting until it is replaced. Machining of the grooves and balancing are key to smooth, vibration-free operation.

It is used in a wide variety of industrial applications: fans, centrifugal pumps, screw compressors, conveyor belts, mixers, mills and machine tools. It is also common in refrigeration equipment and in transmission systems where a fixed speed ratio is required. As a three-groove pulley, it is commonly found in drives that need to transmit intermediate power with a single motor, keeping a compact, low-maintenance design.

To correctly select this pulley, take into account the pitch diameter, the belt section, the number of grooves and the type of keyway or bushing the shaft requires. Verify that the pulley is compatible with the section B belt and that the belt length allows the desired center distance. During assembly, make sure to align the pulleys and tension the belts according to the belt manufacturer's recommendations. Misalignment or incorrect tension shortens the service life of the belts and the equipment's bearings.

If you need a pulley with a different number of grooves, a different diameter or a different section, we can manufacture it or source it. MR Accesorios Industriales manufactures pulleys and also carries a wide range of transmission components. To request an equivalent or a nearby size, send us the part number POLEA 250 3B or the dimensions you need by WhatsApp and we'll quote you promptly.

At MR Accesorios Industriales we manufacture this pulley with quality control and back it with more than 80 years of experience in the industry. If you have questions about the application or want to confirm a special size, write to us on WhatsApp and we'll advise you. We are here to help you find the pulley that best fits your machine.