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Industrial pulley 550 mm, 7 grooves, section B
- Manufacturer Part Number
- POLEA 550 7B
- Brand
- EMMARIn-house manufacturing
- Category
- Power transmission
- Subcategory
- Pulleys
- Series
- Sección B
In-house manufacturing
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Request your quote via WhatsApp or email, with the quantity and time frame you need.
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Description
EMMAR POLEA 550 7B is a pulleys reference, within Power transmission. Request a quote for POLEA 550 7B via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The industrial pulley 550 7B is a power transmission component manufactured by EMMAR Accesorios Industriales. With a 550 mm diameter and 7 grooves for section B belts, it is used to transmit motion between shafts in industrial equipment. Its in-house construction allows the machining to be adapted to assembly needs, and as part of MR's manufacturing line, variants in diameter, number of grooves or bushing type can be requested. It is a part designed to work continuously in plants and workshops.
This pulley has a 550 mm diameter, 7 grooves and is designed for section B belts. The commercial designation is POLEA 550 7B. Since it is in-house manufacturing, EMMAR brand, the bore and keyway can be machined according to the shaft it will be mounted on. Section B is one of the most widely used in medium transmission, and with 7 grooves it allows the load to be distributed among several belts to drive higher-power equipment.
It is used in machines that need to transmit motion between separate shafts, such as compressors, fans, centrifugal pumps, mills, screens and conveyors. It also appears in process equipment, mixers and machine tools. In industrial plants, this type of pulley is chosen when a stable drive ratio and the possibility of adjusting tension by moving the motor are sought.
To select correctly, take into account the power to be transmitted, the RPM of the driving and driven shafts, and the section B belt type. Check the shaft diameter to define the bore and keyway, and the space available for the pulley's outside diameter. Assembly must ensure concentricity and a fit that prevents vibrations. If the pulley is mounted on a taper bushing, follow the bushing manufacturer's instructions.
If you need a different diameter or number of grooves, an equivalent or a nearby size can be requested within the same section B. For that, send us the part number POLEA 550 7B or the equipment data: current diameter, grooves, belt section and shaft diameter. With that data, the manufacture of a custom pulley or the closest alternative within MR's line is evaluated.
To quote this pulley or ask about a variant, write to us by WhatsApp and send us the part number POLEA 550 7B. You can also indicate the shaft dimensions and the number of grooves you need. MR Accesorios Industriales manufactures pulleys, split plummer block housings and ANSI chains, and distributes bearings, seals and power transmission products. With more than 80 years of experience, the technical team helps you define the best option for your application.
Dimensions
- Size
- 550mm
- Grooves
- 7
- Section
- B
Frequently Asked Questions
- What does it mean that it is in-house manufacturing, EMMAR brand?
- It means that MR Accesorios Industriales manufactures it in its workshops. That is why the bore, keyway and balancing can be adapted to the shaft and mounting conditions. It is not a pulley bought from a third party and resold: it is MR's own production.
- Can I order a pulley with a different diameter or number of grooves?
- Yes. Since it is in-house manufacturing, variants in diameter, number of grooves or bushing type can be evaluated. Send the current dimensions and the equipment data by WhatsApp so the technical team can define the most suitable alternative.
- How do I know if section B is the right one for my machine?
- Section B is used in medium power transmissions. To confirm it, check the width and height of the belt you have mounted. If the belt is of another section, the pulley can be manufactured with the corresponding profile.

