Industrial pulley 400 mm, 4 grooves, section C

EMMAR POLEA 400 4C is a pulleys reference, within Power transmission. Request a quote for POLEA 400 4C via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 400 4C pulley is a V-belt drive pulley, section C, with a 400 mm diameter and 4 grooves. It is used to drive machine shafts from a motor, transmitting torque and regulating speed according to the ratio between pulleys. It is an in-house manufactured part, EMMAR Accesorios Industriales brand, designed for installations that require alignment, balancing and good belt grip.

This pulley has a 400 mm diameter, 4 grooves and section C. That combination defines how many section C V-belts it accepts and what transmission ratio you can build with the motor pulley. Section C corresponds to a wide-pitch belt profile, common in medium and high power. Being in-house manufactured, EMMAR brand, it is machined and balanced according to the application, and the pitch diameter and groove width can be verified against the technical data sheet before shipping.

It is used in drives for mills, mixers, compressors, centrifugal pumps, fans and conveyors. Also in agricultural machinery and plant equipment where speed needs to be multiplied or reduced with belts. In these assemblies, the 400 mm pulley usually goes on the driven shaft, while the driving pulley is smaller. The 4 grooves allow distributing the load among several belts, which extends the service life of the assembly and reduces vibration.

To select it, start from the motor power, the RPM and the desired transmission ratio. Verify that the 400 mm diameter is compatible with the available space and with the shaft diameter. Check the alignment between pulleys with a straightedge or laser, and tension the belts according to the belt manufacturer's manual. A misalignment of a few millimeters generates uneven wear in the grooves and noise. If the pulley is mounted with a taper bushing, tighten the screws in a cross pattern and with a torque wrench.

If you need a nearby size, a different number of grooves or a pulley for a different shaft, send us the data: outside or pitch diameter, number of grooves, section and shaft diameter. With that we look for the equivalent in our in-house manufacturing line or offer you a custom pulley. We can also check whether the pulley you have mounted can be replaced by one with similar characteristics without modifying the drive.

To quote the 400 4C pulley, write to us on WhatsApp with the part number MR-POLEA-C4-400. If you have doubts about the section, the number of grooves or the diameter, send a photo of the old pulley and the shaft measurements. From MR Accesorios Industriales we will reply with the alternative that best fits your machine.