Industrial pulley 90 mm, 4 grooves, section A

EMMAR POLEA 90 4A is a pulleys reference, within Power transmission. Request a quote for POLEA 90 4A via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The POLEA 90 4A pulley is a V-belt drive pulley, section A, with a 90 mm diameter and 4 grooves. It is used to drive shafts from a motor, distributing power across several belts to spread the load and reduce slippage. It is an in-house manufactured part, EMMAR Accesorios Industriales brand, designed for drive assemblies in machines, plant equipment and production lines where a stable transmission ratio and simple replacement are required.

This item is a pulley with a 90 mm diameter, 4 grooves and section A. The POLEA 90 4A designation summarizes those three data points: the outside diameter, the number of grooves and the belt profile it accommodates. The section A grooves are dimensioned for classic V-belts of that section, so that the belt seats correctly and wear is distributed evenly across the four grooves.

Typical applications are drives for machine tools, compressors, fans, centrifugal pumps, conveyor belts and plant equipment in general. When the motor delivers more torque than a single belt can transmit, a four-groove pulley allows the load to be spread across several belts and gains contact surface. It is also used to correct existing transmission ratios when the speed of a shaft needs to be changed without touching the motor.

To select it, verify that the belt section matches the pulley's section A and that the number of grooves is the same as the drive pulley, so that all belts work in parallel. Check the shaft diameter and the fastening system before mounting, and align the pulleys with a straightedge or a laser to avoid uneven wear. Tension is adjusted according to the equipment manual; excessive tension stresses the bearings and too little makes the belt slip.

If you need a different diameter size or a different number of grooves, send us the part number POLEA 90 4A and the data of the pulley you are replacing: diameter, number of grooves, section and shaft diameter. With that we look for the closest size within the in-house manufacturing line or evaluate the part that best suits your drive. We can also guide you if you are unsure between a section A pulley and another section for the same equipment.

MR Accesorios Industriales manufactures this pulley and has distributed bearings, housings, power transmission, seals, bushings, mounting tools and lubricants since 1945. If you want to request a quote for the POLEA 90 4A or ask about an equivalent size, write to us on WhatsApp with the part number and the equipment data. We will reply with the alternative that best fits your drive.