Industrial pulley 290 mm, 4 grooves, section B

EMMAR POLEA 290 4B is a pulleys reference, within Power transmission. Request a quote for POLEA 290 4B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 290 4B pulley is a V-belt drive pulley manufactured by EMMAR Accesorios Industriales. It has a 290 mm diameter and 4 grooves for section B belts. It is used to transmit power between parallel shafts in industrial machines and equipment, where a defined transmission ratio and good drive capacity are required. Because it is in-house manufactured, the bore and keyway machining can be adjusted to the shaft on which it is mounted.

This item is a pulley with a 290 mm diameter, 4 grooves and section B. The designation POLEA 290 4B summarizes those three variables: the outside diameter, the number of grooves and the belt profile it accepts. Section B corresponds to classic V-belts with a B profile, and the 4 grooves allow up to four belts to be mounted in parallel on the same pulley. The body is machined to receive the bore and keyway that correspond to the machine shaft.

Typical applications are belt drives in process equipment, fans, pumps, compressors, conveyor belts and machine tools. It is also used in gear reducers and multipliers where a fixed transmission ratio between two shafts is required. With four grooves, it is suitable for medium and high power within section B, and allows the load to be distributed among several belts to reduce wear and improve service continuity.

To select the pulley, it is advisable to start from the power to be transmitted, the rpm of the drive shaft and the driven shaft, and the pitch diameter required by the drive calculation. With that data, the number of grooves and the belt section are defined. During assembly, check the alignment between pulleys, the belt tension and the condition of the keys and set screws. A misaligned pulley or one with worn grooves accelerates belt wear and generates vibrations.

If you need an equivalent pulley or a nearby size, send us the part number POLEA 290 4B or the shaft data: diameter, usable length, keyway and number of grooves. We can also evaluate variants in other sizes within section B. The idea is for the pulley to fit the equipment without rework and for the drive to be balanced. If you have the original pulley on hand, a photo with the diameter and bore measurement helps confirm the part.

MR Accesorios Industriales manufactures this pulley and other power transmission parts. If you want to request a quote or ask about a different size, write to us on WhatsApp with the part number POLEA 290 4B and we will reply with the technical information you need to finalize the selection.