Belts and Pulleys

Industrial Belts and Pulleys

HVH Industrial offers a wide range of v-belts: classical, narrow, FHP, v-ribbed, timing belts: classical, HTD, STD, and Sheaves & Pulleys: heavy-duty, light-duty, iron, lifting, liner.

In mechanical engineering, belt is used to link two or more rotating shafts mechanically, most often parallel. Belts may be used as a source of motion, to transmit power.

Sheave is a grooved wheel used for holding a belt, or wire rope. Product allows the wire or rope to move freely, minimizing friction and wear on the cable. They  can be used to redirect a cable or rope, lift loads, and transmit power.

HVH team works closely with manufacturers to offer our customers the right solutions for their equipment, industry and application. 

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A Belt is a flexible material mostly made of rubber or synthetic polymer that connects rotating shafts. Other materials include cotton, polyester, and aramid (like Twaron, Kevlar, or Techora). 

A Belt drive is a frictional drive that is used to transfer torque from one shaft to the other. Some applications use multiple shafts to connect drives to power multiple points in a system. Some belt drives use belts that connect shafts at right angles.

In all applications, the belt drive is compiled of one or several sets of belts and pulleys. The tension between the driver and driven shafts results in a frictional force that transfers the torque from the driver to the driven shaft. You can check our belts and pulleys catalog and find the right product for you.


There are three basic groups of drive belts: 

  • V-Belts (or Wedge)
  • Synchronous Belts (or Toothed)
  • Flat Belts 


Pulleys in their turn (both driver and driven) are also divided into three groups: 

  • Grooved pulleys (Sheave)
  • Toothed pulleys (Sprocket)
  • Classic drum-style pulleys


Flat Belts

If you look into Belt and Pulley system history generally, you'll see that Flat Belts are the oldest belts. These leather belts came around during the industrial revolution and were largely in use at the end of the 19th century and early 20th century. The problem with a Flat Belt is that it needs high tension to avoid slipping. In the early days, liquids were used to make the belt more sticky to the pulleys. The advantage of these belts is their high flexibility and can easily bend around very small pulleys.


Rope Belts

Going back to the 19th century again when cotton ropes were being used as belts. At the time ropes were giving an opportunity to use a more economical drive and had had lower maintenance costs. With electric motors taking the central stage it became clear that rope and leather belts were not adapted to these drives because tension had to be increased a lot to avoid slip.



V-belts get their name from their trapezoidal shape, which helps them wedge into the sheaves. Twisted synthetic fibrous tensile chords, compressed by synthetic rubber, form a typical V-belt, rendering it strength and flexibility. There are Classical V-Belts, Narrow V Belts, Fractional Horsepower V-Belts (FHP), Metric V Belts, V-Ribbed Belts, and Variable Speed Belts.


Belt drives have many advantages. Here's the list of some of them:

  • Belt drives are economical
  • Belt drives are simple to install
  • Belt drives have no need for lubrication
  • Belt drives are reliable
  • Belt drives are used in a large variety of applications
  • Belt drives basically have no speed limitations
  • Belt drives have long pulley life
  • Pulleys are cost-effective


Belt drives are widely used in both industrial and domestic machinery. Several examples of usage in domestic machinery include:

In washing machines (they transfer power from the motor to the drum shaft), Alternators in automobiles, Flour mills, Lathe machines, Milling Machines, Drilling machines, Paper mills, Conveyors. In industrial machines, belt drives are used in grain belt conveyors, sawmills, printing presses, punch presses, etc.