Industrial pulley 420 mm, 1 groove, section A
- Brand
- EMMAR
- Category
- Power transmission
- Subcategory
- Pulleys
- Section
- A
- Series
- Sección A
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Description
EMMAR POLEA 420 1A 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 1A and any equivalents.
The 420 1A pulley is a single-groove, A-section power transmission pulley with a 420 mm diameter. Manufactured in-house under the EMMAR brand, it transfers motion from a motor to driven equipment through V-belts. Its one-groove layout suits straightforward drives where you want direct ratio and reliable belt grip without extra complexity.
With a 420 mm diameter and a single A-section groove, this pulley matches classic narrow-profile V-belts used in light and medium drives. The large diameter lets you reach high tangential speed at modest shaft RPM, which is useful for fans, compressors, and other machines running at moderate speeds. One groove keeps mounting and alignment simple and works well when the drive does not need redundancy.
You will often find it on industrial fans, centrifugal pumps, screw compressors, light conveyor belts, and machine tools. It also fits process equipment where a single belt handles speed reduction or multiplication. Because of its size, it typically goes on a motor shaft or on a machine shaft that already carries a smaller drive pulley. It is common in installations where space is tight and drive simplicity matters.
During installation, check that the shaft diameter and keyway match, and that the pulley lines up with the drive pulley to prevent premature belt wear. Set belt tension correctly: too loose and it slips, too tight and it overloads the bearings. Use an A-section belt that fits the groove, and confirm the pulley outer diameter suits the speed you need. If anything is unclear, share your machine data and we will help you choose.
For an equivalent, send the original pulley part number, the belt section, the number of grooves, and the diameter you need. We can also manufacture a custom pulley when you provide dimensions and shaft type. MR makes pulleys and split plummer block housings, and supplies bearings, power transmission components, and seals. Send the part number by WhatsApp or email and our team will reply promptly with a quote and suggestions.
Dimensions
- Size
- 420mm
- Grooves
- 1
- Section
- A
Frequently asked questions
- What does A-section mean for this pulley?
- A-section is a classic narrow V-belt profile. The groove is machined to fit that belt shape, so the pulley works only with A-section belts. It is not compatible with B, C, or other narrow profiles.
- Can I run a belt of a different section on this pulley?
- No. The groove is cut for A-section. A belt of another section will not seat properly and may slip or come off. If you need another section, contact us for the matching pulley.
- How do I request a pulley with more grooves?
- Send us the diameter, section, and number of grooves you need via WhatsApp or email. We manufacture pulleys with one, two, or more grooves to your requirement, including special sizes.