Industrial pulley 70 mm, 4 grooves, section B

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

The 70 4B pulley is a V-belt drive pulley, manufactured by EMMAR Accesorios Industriales. It has a 70 mm diameter and 4 grooves of section B, which allows transmitting motion between shafts by means of section B belts. It is used in machines, equipment and production lines where a reliable speed reduction or multiplication is needed. Being of in-house manufacturing, the machining and quality of the assembly are controlled.

This item is a pulley of 70 mm diameter with 4 grooves of section B. Section B corresponds to a V-belt profile widely used in industrial power transmission. The 4 grooves allow mounting several belts in parallel on the same pulley, which distributes the load and improves the reliability of the drive. The 70 mm diameter defines the transmission ratio when combined with another pulley of the same system. The designation POLEA 70 4B summarizes these characteristics: size, number of grooves and section.

The typical applications of a 4-groove section B pulley appear in drives of machine tools, compressors, fans, pumps, conveyor belts and process equipment. It is also used in drives where a certain redundancy is needed: if one belt fails, the remaining ones keep transmitting until it is replaced. In industrial plants, this type of pulley is found in test benches, mixers and suction systems. Its compact size makes it suitable for reduced spaces where a larger diameter pulley does not fit.

To correctly select this pulley, take into account the pitch diameter, the number of grooves and the belt section. The 70 mm, 4-groove section B pulley must be mounted on a shaft whose diameter matches the central bore, which is defined according to the order. It is important to verify the alignment between pulleys to avoid uneven belt wear and vibrations. Balancing and concentricity influence the service life of the equipment bearings. If the pulley is used in an existing system, it is advisable to review the transmission ratio and the admissible peripheral speed.

If you need an equivalent pulley or a neighboring size, the most practical thing is to send us the part number of the original pulley or the equipment data: diameter, number of grooves, section and shaft diameter. With that data we can verify whether the POLEA 70 4B adapts or whether it is better to manufacture a pulley with the same characteristics. Being in-house manufacturing, EMMAR brand, we have flexibility to adapt the bore, the keyway and other particularities. You do not need to have the technical data sheet at hand: a photo of the pulley and an approximate measurement are enough to guide you.

To request a quote for the 70 4B pulley or ask about a variant, send the part number via WhatsApp to MR Accesorios Industriales. We will reply with the technical information and the quote. If you are replacing an existing pulley, attach a photo and the shaft measurements to speed up the response. We can also advise you on the adequate section B belt for your application.