Industrial pulley 420 mm, 2 grooves, section A

EMMAR POLEA 420 2A 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 420 2A and any equivalents.

The 420 2A is a two-groove, section A V-belt pulley with a 420 mm diameter, made by EMMAR. It is intended for power transmission between parallel shafts in industrial machinery, where a consistent speed ratio and reliable belt grip are required. Because we manufacture it ourselves, machining and balancing can be adapted to the specific application. To replace an existing pulley or design a new drive, send us the part number and we will provide a quote.

This pulley measures 420 mm in diameter and has 2 grooves for section A belts. Section A is a classic narrow V-belt profile commonly found in industrial drives. With two grooves, you can run two belts in parallel, which raises the transmission capacity and adds redundancy: if one belt breaks, the other keeps the drive running until a replacement is fitted. The 420 mm diameter falls into the large-pulley range, typically used on low or medium speed shafts. Machining is performed at our facility, with dimensional checks and balancing.

A pulley of this size and section is often seen on industrial fans, centrifugal pumps, screw compressors, screens, conveyor belts and continuous process machines. It also appears in mining, cement and aggregate processing plants, where drives operate many hours per day. In these settings, correct alignment and balancing are essential to prevent vibration and premature wear on belts and bearings. Section A suits medium power and moderate peripheral speeds.

When selecting a 2-groove section A pulley, consider the pitch diameter, number of grooves, bore type (cylindrical or tapered) and fastening method (keyway, taper bushing or press fit). Check the center distance and the desired transmission ratio. The 420 mm diameter affects peripheral speed: higher speed means greater balancing demand. During installation, align the pulleys with a straightedge or laser, tension the belts according to the manufacturer's manual, and check tension and wear regularly. A misaligned pulley shortens the life of the entire assembly.

For an equivalent pulley, send the part number POLEA 420 2A by WhatsApp. You can also provide the diameter, number of grooves and section you need, and we will quote the best match. If you have an old pulley, send a photo or sketch with the bore and keyway dimensions. Since we manufacture in-house, we can evaluate variations in machining, balancing or surface treatment.

MR Industrial Accessories LLC manufactures pulleys, split plummer block housings and ANSI chains, and distributes bearings, power transmission components, seals and lubricants. We serve industries across the United States and in several Latin American countries. To request a quote for the 420 2A pulley or any other transmission part, contact us by WhatsApp or email and we will respond promptly.