Industrial pulley 70 mm, 4 grooves, section B

EMMAR POLEA 70 4B belongs to pulleys, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for POLEA 70 4B and any equivalents.

The EMMAR 70 4B is a V-belt pulley with a 70 mm diameter and four grooves in section B. It is manufactured in-house by MR Industrial Accessories, which means the machining and assembly quality are directly controlled. This pulley is used to transmit motion between shafts with B-profile belts, typically where a reliable speed change is needed.

The code 70 4B tells you the key specifications: 70 mm diameter, 4 grooves, and section B. Section B is a common V-belt profile for industrial drives. Four grooves let you run multiple belts in parallel on the same pulley, which spreads the load and keeps the drive running if one belt fails. The 70 mm diameter sets the transmission ratio when paired with another pulley.

You will find this pulley in drives for machine tools, compressors, fans, pumps, conveyors, and process equipment. Its compact size fits where a larger diameter pulley will not. In plants, it shows up on test benches, mixers, and suction systems. The multiple grooves also provide redundancy: if one belt breaks, the others continue to transmit power until you replace it.

When selecting a 70 4B pulley, check the pitch diameter, groove count, belt section, and shaft size. The central bore is machined to match your shaft, so confirm the required diameter at the time of order. Proper alignment between pulleys prevents uneven belt wear and vibration. Balance and concentricity affect bearing life, so review the transmission ratio and peripheral speed if you are fitting this into an existing drive.

If you need a replacement, send the original part number or the equipment details: diameter, number of grooves, section, and shaft diameter. We can identify the right 70 4B or make one to the same specifications. Because it is manufactured in-house, the bore and keyway can be adapted to your needs. A photo and approximate measurements are often enough to get started.