Industrial pulley 650 mm, 7 grooves, section B

EMMAR POLEA 650 7B is a reference of pulleys, within Power transmission. Request a quote for POLEA 650 7B via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The 650 7B pulley is a V-belt drive pulley manufactured by EMMAR Accesorios Industriales. It has a 650 mm diameter and 7 grooves for B-section belts. It is used to drive machine shafts with defined transmission ratios, where a large pulley with several grooves is needed to distribute power. Because it is in-house manufactured, variants in machining and balancing can be requested.

This item is a pulley with a 650 mm diameter, 7 grooves and B section. The designation POLEA 650 7B summarizes those three variables: size, number of grooves and belt profile. Section B corresponds to classic B-profile V-belts, and the 7 grooves allow more power to be transmitted than a single-groove pulley. The 650 mm diameter places it among large pulleys, typical of low-speed shafts.

It is used in machine drives where the drive shaft turns at low speed and the driven shaft speed needs to be multiplied, or vice versa. It appears in compressors, mills, mixers, screens, high-flow fans and transmission equipment in industrial plants. Also in agricultural machines and implements that run with B-section belts and require several grooves to avoid slipping.

To mount it, verify that the shaft diameter and key match the pulley bore and keyway. The 7 grooves must be aligned with those of the drive pulley; minimal misalignment wears the belts and grooves. Check balancing if the pulley will rotate at high speed. Belt tension is adjusted according to the equipment manual, no more than necessary to avoid extra loads on the bearings.

If you need an equivalent pulley, send us the part number POLEA 650 7B or the shaft dimensions and belt section. We can manufacture variants with a different diameter, a different number of grooves or a different bore. It is also advisable to check the condition of the grooves: if they are worn, the belt slips and heats up. In that case, we evaluate repair or replacement.

MR Accesorios Industriales manufactures this pulley and other B-section pulleys in different sizes. If you want to request a quote or ask about a similar one, send the part number via WhatsApp and we will reply with the available options. We can also advise you on the drive pulley and belts so that the drive is properly assembled.