Industrial pulley 70 mm, 4 grooves, section A

EMMAR POLEA 70 4A is a pulleys reference, within Power transmission. Request a quote for POLEA 70 4A via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 70 4A pulley is a power transmission pulley with in-house manufacturing, EMMAR Accesorios Industriales brand, designed for building V-belt drives in industrial equipment. It has a 70 mm diameter, 4 grooves and section A, which places it in the range of narrow-profile pulleys for moderate power. It is used in machines that need several speed ratios or belt redundancy, and it is machined with the bore and keyway according to the shaft on which it is mounted.

This item is a pulley with a 70 mm diameter, 4 grooves and section A. Section A corresponds to classic narrow-profile V-belts, and the 4 grooves allow the load to be distributed among four belts, which provides more transmission capacity than a single-groove pulley of the same diameter. The 70 mm diameter is a small size within the line, so it is advisable to verify that the pitch diameter is the one required by the drive calculation. The bore, keyway and balancing are defined at the time of manufacturing.

It is used in drives for machine tools, compressors, fans, centrifugal pumps, conveyors and factory equipment where space is limited. It also appears in applications where the goal is to reduce motor speed with few belts and keep the assembly compact. Because it is in-house manufactured, the bore diameter and hub length can be adapted to standard shafts or to shafts already existing on the machine.

To select it, start from the power to be transmitted, the RPM of the drive shaft and the driven shaft, and the pitch diameter resulting from the calculation. Then verify the number of grooves: 4 section A grooves cover a power range that should be checked against the belt manufacturer's table. During assembly, align the pulleys with a straightedge or laser, tension the belts according to the recommended deflection and check that none is looser than the others. Misalignment or uneven tension shortens belt life and damages the shaft bearings.

If you need a nearby size, a different diameter or more grooves, it can be manufactured to order within the same section A. To request an equivalent, send us the part number of the original pulley, the number of grooves, the belt section and the pitch diameter; with that data the part is defined. If you have the shaft drawing, even better: the bore and keyway are adjusted to that dimension. We can also evaluate replacement with a section B pulley if the drive allows it.

MR Accesorios Industriales manufactures this pulley in the country and sells it together with the rest of the power transmission line. If you already have the code POLEA 70 4A, send it by WhatsApp and we will send you the quote with the machining options. If what you need is another size, tell us the application and we will advise you on the appropriate pulley.