Industrial pulley 280 mm, 3 grooves, section B

EMMAR POLEA 280 3B is a pulleys reference, within Power transmission. Request a quote for POLEA 280 3B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 280 3B pulley is a power transmission pulley of in-house manufacturing, EMMAR Accesorios Industriales brand, with 280 mm diameter and 3 grooves for section B belts. It is used to transmit motion between parallel shafts in machines and industrial equipment, where a defined transmission ratio and good drive capacity are required. Being a three-groove pulley, it allows the load to be distributed among several belts and adds power without increasing the diameter.

This item is a pulley of 280 mm diameter, with 3 grooves and section B, according to its designation POLEA 280 3B. Section B corresponds to a classic V-belt profile, and the three grooves allow three belts to be mounted in parallel on the same pulley. The 280 mm diameter is the outside dimension of the pulley, and the number of grooves defines how many belts can work at the same time. Manufacturing is in-house by MR, with machining and dimensional control at the factory.

Typical applications of a 3-groove section B pulley appear in belt drives of machine tools, compressors, fans, centrifugal pumps, conveyor belts and process equipment. In all those cases the goal is to transmit torque from a motor to a driven shaft, maintaining a stable speed ratio. Having three grooves, the pulley accepts more power than a single-groove pulley of the same diameter, and also allows continued operation with margin if one belt wears.

To mount and select this pulley, take into account the shaft diameter, the type of keyway and the fastening system. Verify that the belt section is B and that the number of grooves matches the number of belts you are going to use. Alignment between driving and driven pulleys is key to avoid uneven wear and vibration. It is also advisable to check belt tension and the condition of the grooves before starting up the equipment.

If you need an equivalent pulley or a nearby size, the most practical thing is to send us the part number POLEA 280 3B or the data of the original pulley: diameter, number of grooves, section and shaft diameter. With that information we can verify whether there is a pulley of our manufacturing that fits or whether it is better to machine a special size. We can also advise you on the number of grooves and the section suitable for your drive.

To request a quote for this pulley or ask about a variant, write to us on WhatsApp at MR Accesorios Industriales with the part number POLEA 280 3B. We will reply with the available technical information and manufacturing alternatives. If you have doubts about the pulley you need, send us a photo or a sketch with the main dimensions and we will help you identify it.