Industrial pulley 420 mm, 4 grooves, section C

EMMAR POLEA 420 4C 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 4C and any equivalents.

This EMMAR V-belt pulley, identified by the code 420 4C, is built for drives that need four parallel C-section belts. The 420 mm diameter and four grooves are the two key figures behind the designation. Because the pulley is made in-house, the bore, keyway and balancing can be machined to match the shaft and mounting arrangement of your equipment.

The code 420 4C breaks down simply: 420 is the outside diameter in millimeters, and 4C means four grooves cut for section C belts. Section C is a heavy-duty V-belt profile intended for higher torque transmission. When you order, have the shaft diameter and fastening details ready, since those determine how the bore, keyway and balancing are finished.

These pulleys show up in medium- and high-power drives: mills, mixers, screw compressors, large centrifugal pumps, industrial fans, and process lines in food or chemical plants. Lifting equipment and wood or plastic machinery also use them where speed needs to be stepped up or down through multiple belts. In every case, the pulley works as part of a set with the belts and the opposing pulley that sets the drive ratio.

Proper selection starts with the power to be transmitted, the RPM of the faster shaft and the target drive ratio. The groove count and belt section together define how much power each belt run carries. At installation, verify pulley alignment with a straightedge or laser, check belt tension, and make sure the keyway seats without play. A pulley that is out of line or has uneven tension across grooves will wear belts and bearings ahead of schedule. If the shaft is large, check whether the available mass thickness is sufficient.

If you need a different diameter or groove count, send the reference 420 4C or the shaft data and the belt you are running. Since we produce our own pulleys, we can quote a version with the bore, keyway or balancing your equipment calls for. We can also help you review whether another section or a complete assembly with the driving pulley would serve you better, so you avoid a pulley that does not fit the shaft or match your existing belts.

To request a quote, message us on WhatsApp with the part number 420 4C and include the shaft diameter, keyway and groove count you need. MR Industrial Accessories LLC manufactures pulleys, split plummer block housings and ANSI chains, and also supplies bearings, seals and power transmission components. With your details, we will send the quote and confirm the machining available for your application.