Industrial pulley 380 mm, 4 grooves, section B
- Brand
- EMMAR
- Category
- Power transmission
- Subcategory
- Pulleys
- Section
- B
- Series
- Sección B
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Description
EMMAR POLEA 380 4B 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 380 4B and any equivalents.
When you need to transmit power through V-belts, this 380 mm pulley with four grooves in section B is a solid choice. It mounts on a motor or driven shaft and is built for continuous-duty equipment like fans, pumps, compressors, and conveyors. EMMAR manufactures it with tight dimensional control, so it drops into your transmission line without makeshift adjustments.
The designation POLEA 380 4B tells you the key specs: a 380 mm diameter, four grooves, and section B. That section matches classic-profile V-belts, and the four grooves let you spread the load across multiple belts to handle more power without going to a larger diameter. It's set up for standard shafts and aligns with the driven pulley to keep the transmission ratio steady.
You'll find this pulley in fixed-ratio drives where speed needs to change: centrifugal fans, water pumps, screw compressors, conveyor belts, and machine tools. It also works well when radial space is tight and distributing power over several grooves beats using a bigger belt section. It's a common replacement in corrective maintenance and when grooves wear out.
To pick the right one, check that your belt is section B and that the groove count matches the power you need to transmit. Verify the pitch diameter, bore, and shaft fixing before mounting. Proper alignment between pulleys and correct belt tension are critical to avoid vibration and premature wear. If the old pulley has a keyway or taper bushing, confirm it against the manufacturer's data sheet.
For a quote on an equivalent, send the full part number, section, number of grooves, and diameter from the old pulley. With that, we can offer an alternative from our in-house manufacturing line or advise if the mounting needs modification. We can also look at variants with a different groove count in the same section to fine-tune the transmission.
EMMAR produces this pulley and other power transmission parts in its own facility. To get a quote, message us on WhatsApp with the part number POLEA 380 4B, and we'll respond quickly with bore machining options.
Dimensions
- Size
- 380mm
- Grooves
- 4
- Section
- B
Frequently asked questions
- What does section B mean?
- Section B is the V-belt profile that fits the grooves. It's a standard size: if your belt is section B, it matches this pulley. Don't mix sections—the belt won't seat right and will wear out fast.
- Can I order a different bore or keyway?
- Yes. Because it's made in-house under the EMMAR brand, we can machine the bore and keyway to fit your shaft. Just provide the shaft dimensions and fixing type when you request a quote on WhatsApp.
- How do I know if I need 4 grooves or fewer?
- The groove count depends on the power to transmit and the pulley diameter. If your original pulley has 4 grooves, you likely need the same to keep transmission capacity. Ask us with your machine data.