Industrial pulley 550 mm, 4 grooves, section B
- Brand
- EMMAR
- Category
- Power transmission
- Subcategory
- Pulleys
- Section
- B
- Series
- Sección B
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Description
EMMAR POLEA 550 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 550 4B and any equivalents.
This 550 mm pulley with 4 grooves and section B profile is a power transmission component designed to mount on shafts and transmit motion through V-belts. It is manufactured in-house under the EMMAR brand, allowing machining to be tailored to the requirements of each piece of equipment. Typical uses include compressors, fans, and pumps where power must be distributed across multiple grooves.
The key specifications are a 550 mm diameter, 4 grooves, and section B. These values determine compatibility: the diameter affects the transmission ratio, the number of grooves sets how many belts can be installed in parallel, and section B defines the belt profile. The pulley is produced at MR and machined to match the required size and groove configuration.
Common applications include machines with horizontal shafts that handle medium to high loads, such as screw compressors, centrifugal fans, centrifugal pumps, mixers, and conveyors. In these setups, the 4-groove design distributes torque across several belts, reducing the load on each belt and extending the life of the assembly. It also serves as a drive or driven pulley in gear reducers and transmission boxes.
When mounting, first verify the shaft diameter and fastening method: keyway, taper bushing, or set screw. Check alignment between pulleys using a straightedge or laser; misalignment of a few degrees can damage belts and bearings. Adjust tension according to the belt manufacturer's recommendations, not by feel. If the pulley will rotate at high speed, it should be balanced. In high-vibration equipment, inspect the shaft condition before installation.
If you need a different number of grooves, another diameter, or a different section, send us the part number or the shaft and belt dimensions. At MR, we can manufacture a custom pulley or locate an equivalent within our power transmission line. We can also assist with selecting the bushing or fastening system if you haven't defined it. Providing more data helps us quote faster.
To order, contact us via WhatsApp with the part number POLEA 550 4B or with your required size. We will provide a quote. If you are unsure about the section or number of grooves, send a photo of the old pulley or the equipment, and we will help you identify it.
Dimensions
- Size
- 550mm
- Grooves
- 4
- Section
- B
Frequently asked questions
- What does in-house manufacturing under the EMMAR brand mean?
- It means the pulley is produced at our own facilities, not purchased from a third party. This allows us to control machining, balancing, and tolerances, and to manufacture special sizes if needed.
- How do I know if section B is correct for my application?
- Section B corresponds to a standard V-belt profile. If your existing belt is section B, the pulley is compatible. If unsure, send us the belt part number or a photo for verification.
- Can I order a pulley with a different number of grooves?
- Yes. We manufacture pulleys with various groove counts and diameters. Provide the shaft size, belt section, and desired number of grooves, and we will quote a custom part.