Industrial pulley 400 mm, 3 grooves, section A

EMMAR POLEA 400 3A is a pulleys reference, within Power transmission. Request a quote for POLEA 400 3A via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 400 mm industrial pulley with 3 grooves for A-section is a power transmission component that mounts on a machine shaft to transmit motion through V-belts. It is used in equipment that requires a fixed transmission ratio and good drive capacity, such as compressors, fans, pumps and conveyors. It is an in-house manufactured part, EMMAR Accesorios Industriales brand, designed for continuous service in plant.

This item is a pulley with a 400 mm diameter, 3 grooves and A-section. The commercial designation is POLEA 400 3A and it corresponds to the A-section pulley series that MR manufactures. The grooves are machined to accommodate A-section V-belts, and the 400 mm outer diameter defines the transmission ratio when combined with another pulley in the same system. The part is delivered ready to mount on the shaft, with the bore and keyway according to the order.

Typical applications for a pulley of this size and number of grooves are medium and high-power equipment: screw compressors, centrifugal fans, process pumps, belt conveyors and mills. The three grooves allow the load to be distributed among several belts, which reduces the stress on each one and improves service continuity. It is also used in agricultural machinery and material handling equipment where a robust, low-maintenance drive is required.

To correctly select this pulley, take into account the pitch diameter, the number of grooves and the belt section. The A-section allows for a limited range of diameters; verify that the 400 mm diameter is compatible with the tangential speed of your application. During assembly, make sure that the shaft and the pulley bore have the proper tolerance, that the key fits without play and that the pulley is aligned with the drive pulley. Misalignment, even slight, shortens belt life.

If you need a different size or an equivalent pulley, send us the part number POLEA 400 3A via WhatsApp along with your machine data: drive pulley diameter, section and number of belts, and shaft type. With that data we can offer you a pulley from the same series with a different diameter or number of grooves, or evaluate a custom manufacturing. We can also check whether your application accepts a smaller diameter pulley to adjust the transmission ratio.

MR Accesorios Industriales manufactures this pulley in its workshops and sells it along with the rest of the power transmission line. If you already have the part number, write to us via WhatsApp and we'll send you the quote. If you are not sure about the designation, send us a photo of the old pulley or the shaft and groove measurements, and we'll help you identify the replacement.