Industrial pulley 300 mm, 2 grooves, section B

EMMAR POLEA 300 2B is a pulleys reference, within Power transmission. Request a quote for POLEA 300 2B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 300 2B pulley is a V-belt drive pulley, section B, with a 300 mm diameter and two grooves. It is used to transmit power between parallel shafts in industrial equipment, where a reliable transmission ratio and good belt grip are needed. It is an in-house manufactured part, EMMAR Accesorios Industriales brand, designed to replace worn pulleys or to build a new drive. It is turned on a lathe and balanced to work at the usual industrial speeds.

This pulley has a 300 mm diameter, 2 grooves and section B. Section B defines the groove profile: it is the one that corresponds to V-belts of that section, with a standardized width and depth. The two grooves allow mounting two belts in parallel, which increases transmission capacity without changing the diameter. The 300 mm diameter is the pulley's pitch diameter, that is, the one used to calculate the belt speed and the transmission ratio. The part is manufactured in cast iron or steel, depending on the use, and is turned to achieve concentricity and a good finish on the grooves.

Typical applications are belt drives in industrial machines: compressors, fans, centrifugal pumps, mills, conveyor belts and process equipment. It is also used in the field, in agricultural machinery and in workshops that build or repair equipment with electric or combustion engines. Being a two-groove pulley, it is common in installations where a certain redundancy is needed: if one belt fails, the other keeps transmitting until it is replaced. It is a size that appears often in medium-sized equipment, where the 300 mm diameter gives a reasonable belt speed without requiring excessively large pulleys.

To mount this pulley, check that the shaft has the right diameter and keyway, and that the pulley bore matches. If the shaft is worn or has play, it is best to repair it before mounting. Align the pulleys with a straightedge or a laser so that the belts run in the same plane: misalignment accelerates wear on the belt and the grooves. Belt tension is adjusted according to the equipment manual or with a tension gauge; too little tension makes it slip, and too much strains the shaft bearings. Check the balancing if the pulley is going to rotate at high revolutions.

If you need an equivalent pulley or a nearby size, send us the part number POLEA 300 2B by WhatsApp along with a photo of the old part or a sketch with the shaft dimensions, the keyway and the distance between grooves. It also helps if you tell us the belt you use and the speed at which the equipment works. With that data we can offer you the same pulley, one with another diameter or with a different number of grooves, always within section B. If the original pulley has any particularity, we review it and tell you how to solve it.

At MR Accesorios Industriales we manufacture this pulley and other transmission parts. If you are building a new drive or replacing a worn pulley, write to us by WhatsApp and we'll quote you. Tell us what you need and we'll reply with the best option.