Poly v belt comprising a layer of thermoplastic material

A poly v belt comprising a body in an elastomeric material, preferably EPDM, a plurality of durable filiform inserts longitudinally embedded in the body, and a coupling portion integrally connected to the body and comprising a plurality of V-shaped ribs, side by side and alternating with V-shaped grooves.

According to the poly v belt, comprised a layer of a thermoplastic material that at least partially covers the ribs, and a knitted fabric arranged over the thermoplastic material. Preferably, the thermoplastic material comprises a polyolefin irradiated with a dose comprised between 60 and 140 kGy.

Introduction of drive belt

Drive belt consists of two pulleys over which an endless belt it passed over them. The mechanical power or rotary motion is transmitted from the driving pulley to the driven pulley because of the frictional grip that exists between the drive belt and the pulley surface.

The portion of the drive belt which is having less tension is called slack side and the one which has higher tension is called tight side. The effective pulling power of the drive belt that causes the rotation of the driven pulley is the difference in tension on the slack and tight side.

The tensions in the tight and slack sides of the drive belt depend on the angle of contact, the drive belts have to be arranged such that the slack side comes above and the tight side comes below the pulleys.

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What do V belt numbers mean?

1) Classical v belt – Classified by its dimensions ranging from A to E

The classical v belt is the most common of all v belt types, and it has been in existence even before other v belt types. This type of v belt has a broad scope of usage in different areas such as Agriculture, Industrial Machinery, ventilation etc. and this is due to the fact that it covers a load range from 1 horsepower to 500 horsepower. There is no doubt that the Narrow Wedge is more efficient than the classical v belt; however, they work seamlessly with higher bearing loads and have a high tolerance for adverse operating conditions.

2) Narrow Wedge – Classified by its dimensions ranging from 3V, 5V, and 8V

This type of v belt is more efficient than the Classical type as they have the most significant degree possible for the distribution of force and load transfer, which is the main advantage over the Classical type. Narrow Wedge is able to transmit three times the Horsepower a classical v belt would in the same drive space; they are very suitable for drives at high speed and its well-known for its sturdy, compact size. Unlike the classical v belt, Narrow Wedge can handle drives from 1 horsepower to 1,000 horsepower.

3) Fractional Horsepower – Classified by its dimensions ranging from 2L, 3L, 4L, 5L.

Unlike the two mentioned types of v belts, the Fractional Horsepower is different in operation as it is only designed for light loads and is often used as a single belt on drives that run at one Horsepower or even less. This type of belt is what you see in domestic machines popular in household equipment such as washing machines, fans, and refrigerators. Fractional Horsepower can never be used on any heavy-duty industrial machinery even if it fits perfectly well.

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Types of Conveyor Belts

Fabric Conveyor Belts are Named According to Different Carcass: Cotton Conveyor belt, Nylon Belt, Ep Conveyor Belt.

Nylon Conveyor Belt: Under Condition of middle. Heavy loading capacity, high speed, strong lash and high vulnerability.

EP Conveyor Belt: Under condition of middle distance, heavy loading capacity, high speed conveying, good flexing capacity, trough able, heat resistant, low lad elongation.

Cotton Conveyor Belt: Suitable for middle distance conveying.

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