Industrial pulley 400 mm, 3 grooves, section A
- Brand
- EMMAR
- Category
- Power transmission
- Subcategory
- Pulleys
- Section
- A
- Series
- Sección A
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Description
EMMAR POLEA 400 3A 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 400 3A and any equivalents.
This EMMAR pulley is a 400 mm diameter, 3-groove unit for A-section V-belts. It mounts on a machine shaft to transmit motion at a fixed ratio in compressors, fans, pumps and conveyors. The part is manufactured in-house and supplied ready for installation, with the bore and keyway machined to your order.
The commercial designation is POLEA 400 3A. The 400 mm outer diameter sets the transmission ratio when paired with another pulley in the drive, while the three A-section grooves accept standard V-belts. Each groove is machined to match the A profile, so belt seating and alignment are consistent across the drive.
This size and groove count suit medium- and high-power equipment: screw compressors, centrifugal fans, process pumps, belt conveyors and mills. Running three belts spreads the load across multiple strands, which lowers the stress on each belt and helps keep the drive running if one belt wears. You will also find it on agricultural machinery and material handling equipment where a robust, low-maintenance drive is needed.
When selecting the pulley, check the pitch diameter, groove count and belt section together. The A-section covers a limited range of diameters, so confirm that 400 mm fits the tangential speed of your application. At assembly, verify the shaft and bore tolerances, seat the key without play, and align the pulley with the drive pulley. Even slight misalignment reduces belt life.
If you need a different size or an equivalent, send the part number POLEA 400 3A by WhatsApp together with your machine data: drive pulley diameter, belt section, number of belts and shaft type. With that information we can quote a pulley from the same series with another diameter or groove count, or review a custom manufacturing option. We can also check whether a smaller diameter pulley would work for your ratio.
EMMAR manufactures this pulley in its own workshops, alongside the rest of the power transmission line. If you already have the part number, message us on WhatsApp for a quote. If the designation is unclear, send a photo of the old pulley or the shaft and groove measurements, and we will help you identify the replacement.
Dimensions
- Size
- 400mm
- Grooves
- 3
- Section
- A
Frequently asked questions
- What does A-section mean for this pulley?
- A-section is the V-belt profile that each groove accepts. It sets the groove width and depth. A-section belts are not interchangeable with B or C section belts, so confirm your belts are A-section before mounting.
- Can I order a different diameter or number of grooves?
- Yes. Because we manufacture in-house, we can machine the pulley with the diameter and groove count you need within the A-section series. Send the measurements via WhatsApp and we will quote.
- How do I confirm the shaft bore will fit?
- You need the shaft diameter and key type. The pulley is machined with the bore and keyway to your order. If you do not have those data, send a photo of the shaft and we will verify it with you.