Industrial pulley 420 mm, 7 grooves, section B
- Brand
- EMMAR
- Category
- Power transmission
- Subcategory
- Pulleys
- Section
- B
- Series
- Sección B
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Description
EMMAR POLEA 420 7B 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 7B and any equivalents.
The EMMAR 420 7B is a section B V-belt pulley with a 420 mm diameter and seven grooves. It is made in-house and intended for mounting on shafts to transmit motion through multiple B-section belts. The seven-groove layout lets one pulley body carry a multi-strand drive, which is common where the load is shared across several belts.
This pulley is built to run B-profile V-belts. Its 420 mm diameter sets the ratio when paired with a smaller drive pulley, and the seven grooves allow power to be spread over several belts. That arrangement keeps the drive running if one belt fails. Because EMMAR manufactures the pulley, variations within the same section can be requested.
Typical installations include machine tool drives, compressors, industrial fans, mills, mixers, conveyors, pumping equipment and process lines. In these setups, power usually moves from an electric motor or a gear reducer to the working shaft. A 420 mm diameter with seven grooves is often seen in drives that carry medium to high power, where belt redundancy helps avoid unplanned stops.
When selecting this pulley, check the shaft diameter, the keyway type and the fastening method. Confirm that the belt section is B and that the groove count matches the power to be transmitted. Alignment between pulleys and correct belt tension are important; misalignment wears the grooves and shortens the life of the assembly. For larger shafts, review the hub thickness before mounting.
For an equivalent pulley, send the full part number, the number of grooves and the section. Also helpful are the current outer diameter and a photo of the mounting. With that information, we can check whether a pulley in our line fits or whether a custom-made unit is a better option. We supply power transmission parts and can advise on the best choice for your equipment.
To request a quote for the 420 7B pulley or to ask about another size, contact us on WhatsApp and include the part number MR-POLEA-B7-420. We will respond with the technical details and the quote. If you are unsure about the section or groove count, we can help you identify them.
Dimensions
- Size
- 420mm
- Grooves
- 7
- Section
- B
Frequently asked questions
- What does section B mean for this pulley?
- Section B is a standard V-belt profile. The pulley grooves are cut for that profile, so only B-section belts fit. It cannot be used with other sections such as A or C.
- Can I get a pulley with a different number of grooves?
- Yes. Since EMMAR manufactures this pulley, variants within the same section can be requested. Send the diameter, section and groove count you need by WhatsApp, and we will confirm the in-house manufactured option.
- How can I tell if this pulley replaces the one on my machine?
- Compare the outer diameter, groove count and belt section. Also check the shaft diameter and keyway. If those match, it is likely compatible. If not, send a photo and the measurements for review.