Industrial pulley 550 mm, 4 grooves, section B

EMMAR POLEA 550 4B is a pulleys reference, within Power transmission. Request a quote for POLEA 550 4B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 550 mm industrial pulley with 4 grooves, section B, is a power transmission component that mounts on shafts to transmit motion through V-belts. It is used in machines that need to distribute power across several grooves, such as compressors, fans or pumps. It is in-house manufacturing, EMMAR Accesorios Industriales brand, which allows the machining to be adjusted to what each piece of equipment requires.

This item is a pulley with a 550 mm diameter, 4 grooves and section B. Those are the data you need to cross-check with the shaft and the belt you are going to use: the outer diameter defines the transmission ratio, the number of grooves defines how many belts you can mount in parallel, and section B limits the compatible belt profile. The part is manufactured at MR and machined according to the size and groove the equipment requires.

Typical applications are machines with horizontal shafts that move medium to high loads: screw compressors, centrifugal fans, centrifugal pumps, mixers and conveyors. In those machines the 4-groove pulley allows torque to be distributed across several belts, which reduces the load on each one and extends the life of the assembly. It is also used as a drive or driven pulley in gear reducers and transmission boxes.

To mount it, first check the shaft diameter and the type of fastening: keyway, taper bushing or set screw. Then check the alignment between pulleys with a straightedge or a laser; a misalignment of a few degrees punishes the belts and the bearings. Tension is adjusted according to the belt manufacturer, not by eye. If the pulley is going to rotate fast, it should be balanced. And if the equipment works with a lot of vibration, check the condition of the shaft before mounting.

If you need a pulley with a different number of grooves, another diameter or a different section, send us the part number or the shaft and belt dimensions. At MR we can manufacture the pulley to measure or find an equivalent within the power transmission line. We can also advise you on the bushing or the fastening system if you don't have it defined. The more data you send us, the faster we can quote you.

To order it, write to us on WhatsApp with the part number POLEA 550 4B or with the size you need. We'll send you the quote. If you have doubts about the section or the grooves, send us a photo of the old pulley or of the equipment and we'll help you identify it.