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Industrial pulley 250 mm, 1 groove, section A
- Manufacturer Part Number
- POLEA 250 1A
- Brand
- EMMARIn-house manufacturing
- Category
- Power transmission
- Subcategory
- Pulleys
- Series
- Sección A
In-house manufacturing
We respond promptly.
Request your quote via WhatsApp or email, with the quantity and time frame you need.
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Description
EMMAR POLEA 250 1A is a pulleys reference, within Power transmission. Request a quote for POLEA 250 1A via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The 250 1A pulley is an in-house manufactured power transmission pulley, EMMAR brand, with a 250 mm diameter, one groove and section A. It is used to transmit motion from a motor to a machine by means of V-belts, in installations where a simple transmission ratio and a single belt run are needed. It is a cast part designed to work in light and medium industrial equipment, and is mounted on shafts with a keyway.
This item is a pulley with a 250 mm diameter, one groove and section A. The designation 250 1A summarizes these three variables: the outer diameter, the number of grooves and the belt profile it houses. Section A corresponds to classic V-belts of that section, and the single groove allows only one belt. The part is manufactured at MR and is machined to receive the corresponding shaft, with a keyway according to the requested size.
It is used in belt drives for machine tools, compressors, fans, centrifugal pumps, light conveyor belts and factory equipment. It is common to find it in installations where the motor has a smaller diameter pulley and the aim is to reduce or increase the revolutions of the driven shaft. It is also used as a replacement pulley in equipment that already has a single-groove, section A configuration.
To correctly select a pulley of this type, you must verify the shaft diameter, the keyway width and the center distance. The pulley must be aligned with the driving pulley to avoid uneven belt wear and vibrations. Belt tension is adjusted according to the equipment manual or the belt manufacturer's recommendations. If the shaft is stepped or has a different diameter, it is advisable to report it at the time of inquiry.
If you need a pulley with a different number of grooves, another diameter or a different section, it can be manufactured or an equivalent can be found. For that, send us the equipment data: shaft diameter, keyway, belt section, number of grooves and outer diameter of the original pulley. With that data, a neighboring size or a custom pulley can be defined within the same manufacturing line.
To quote this pulley or inquire about a variant, write to us via WhatsApp and send us the part number POLEA 250 1A. If you have doubts about the equivalence with another pulley, attach a photo or the shaft data and we will help you identify the correct part. MR Accesorios Industriales manufactures and sells pulleys, housings and transmission components for industrial equipment.
Dimensions
- Size
- 250mm
- Grooves
- 1
- Section
- A
Frequently Asked Questions
- What does the designation 250 1A mean?
- The 250 indicates the pulley diameter in millimeters, the 1 the number of grooves and the A the V-belt section it houses. This is a common nomenclature for transmission pulleys.
- Can it be used with a section B belt?
- No, the groove is machined for section A. For a B belt, a pulley with that profile is needed. If you need section B, ask us about the corresponding variant.
- How do I request a pulley with a different shaft diameter?
- Send us via WhatsApp the shaft diameter, the keyway width and the size of the current pulley. With that data we will quote a pulley of the same series with the appropriate bore.

