
Industrial pulley 340 mm, 3 grooves, section A
- Brand
- EMMAR
- Category
- Power transmission
- Subcategory
- Pulleys
- Section
- A
- Series
- Sección A
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Description
EMMAR POLEA 340 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 340 3A and any equivalents.
The 340 3A pulley is a V-belt drive component made by EMMAR. It has a 340 mm diameter, three grooves, and is designed for section A belts. This pulley transmits power between parallel shafts in industrial machinery, providing a stable transmission ratio and reliable belt grip. Because it is manufactured in-house, the machining can be tailored to your equipment's requirements.
The designation POLEA 340 3A captures the key specifications: a 340 mm diameter, three grooves, and section A. Section A refers to the classic narrow V-belt profile, and the three grooves allow you to run three belts in parallel on the same pulley. The diameter, when paired with another pulley in the drive system, sets the transmission ratio.
This pulley is commonly found in belt drives for machine tools, compressors, fans, pumps, conveyor belts, and process equipment. It is also used where speed needs to be reduced or increased between a motor and a driven shaft. With three grooves, it can handle more torque than a single-groove pulley of the same section, as long as the rest of the system is sized for that number of belts.
During installation, check that the shaft diameter and keyway match, and that the pulley is aligned with the drive pulley. Proper alignment and belt tension are essential to prevent uneven wear and vibration. When selecting a pulley, consider the power to be transmitted, the shaft RPM, and the number of grooves, as these determine how many section A belts you will need. If space is tight, a different combination of diameter and grooves might be more suitable.
If you need a different size, number of grooves, or a pulley for another belt section, an equivalent within the same line can be evaluated. To do this, simply provide the current part number, belt section, number of grooves, and required diameter. With that information, the machining can be confirmed.
To request a quote for this pulley or ask about a variant, send the part number POLEA 340 3A via WhatsApp to MR Industrial Accessories. If you are unsure about the section, number of grooves, or diameter, reach out anyway; with your equipment details, we can help you choose. We respond promptly with the technical information you need to make your decision.
Dimensions
- Size
- 340mm
- Grooves
- 3
- Section
- A
Frequently asked questions
- What does section A mean?
- Section A is a classic V-belt profile. The pulley's grooves are machined for this profile, so it is not interchangeable with pulleys for other sections unless the belt is also changed.
- Can I use fewer belts than grooves?
- Yes, you can mount one or two belts on a three-groove pulley, but the transmission capacity decreases. If the equipment was designed for three belts, it is best to use all three to avoid overloading the remaining ones.
- How do I order a pulley with a different size?
- Send the diameter, number of grooves, and section you need via WhatsApp, or provide the part number of your current pulley. With that data, we can find the equivalent within EMMAR's manufacturing line.

