Industrial pulley 420 mm, 5 grooves, section C

EMMAR POLEA 420 5C 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 5C and any equivalents.

The 420 5C is a section C V-belt pulley with a 420 mm diameter and five grooves. It is used on machine shafts where a defined transmission ratio is required and power is spread across multiple belts. This pulley is manufactured in-house under the EMMAR brand, so machining and balancing can be tailored to the application. It mounts on a keyed shaft and must be aligned with the driving pulley to ensure even belt operation.

This pulley has a 420 mm diameter, five grooves and a section C profile. Section C refers to a wide V-belt profile that handles high power in relatively few grooves. With five grooves, the load is shared among five belts, reducing the tension on each one. The 420 mm diameter, together with the driving pulley, sets the transmission ratio. As an in-house manufactured EMMAR part, it is built for continuous duty in plant environments.

Typical applications include screw compressors, industrial fans, centrifugal pumps, mills, mixers and conveyors. It also appears in process equipment where speed needs to be reduced or increased without a gearbox. Because it has five grooves, it is often chosen for drives where a single belt would be near its limit and a safety margin is desired. Always verify that the shaft and keyway can support the torque the pulley will transmit.

Before mounting, check the shaft diameter and keyway. Heating the pulley in an oil bath or with an induction heater is recommended; never strike it with a hammer. Align the pulleys with a straightedge or laser so belts do not come off or wear unevenly. Adjust tension according to the belt manufacturer's manual: too little causes slip, too much stresses bearings. For high-speed operation, check balancing. Inspect the grooves for burrs or stepped wear, which shorten belt life.

If you need an equivalent pulley, send part number 420 5C by WhatsApp and we will tell you what alternatives are available. We can also evaluate variants in groove count or diameter based on your shaft and desired ratio. To do so, please provide machine data: power, input and output speeds, belt type and shaft diameter. With that information, we can determine whether a pulley of the same section is suitable or if another configuration is needed.

MR Industrial Accessories manufactures pulleys, split plummer block housings and ANSI chains, and supplies bearings, power transmission components, seals, bushings, mounting tools and lubricants. The company supports plants and workshops with component selection and replacement. For questions about this 420 5C pulley, contact us on WhatsApp with the part number and we will respond with a quote.