A brief yet effective Flat belt pulleys guide
28 Dec, 2020

When it comes to transferring heavy-weight materials to a new place or other major transmission tasks, we cannot simply deny the benefits of flat belt pulleys. We can see the high usages of Flat belt pulleys in the transmission systems that use flat belts, engage high speed, and low-power applications. You will find this kind of transmission system in many leading industries such as paper making, textiles, and office machinery.

We can see the high usage of flat belts for conveyors. According to experts, flat belts are thinner by 25% in comparison with piled belts of equal horsepower. Due to this thin shape, flat belt pulleys appear smaller than V-belt pulleys.

If we see at the expense, a flat belt pulley is also a comparatively cost-effective choice. You have guessed it right that today we are going to give you a brief flat belt pulleys guide here. It is a brief guide yet it will be helpful enough for choosing the right type of belt and pulley based on your requirements.

There is an amazing safety benefit of using such a belt and that is in over-torque situations, this flat belt can slip and prevent damage. In order to enjoy the benefits of a flat belt, you should set it with a flat pulley and flat pulley idler. Here you may not require grooved flat belt pulleys.


The flat belt pulley and the flat belt pulley idler come with a molded crown. This crown actually helps to properly center the belt and prevent harsh rubbings from against the outside flanges. Apart from this, the crown also provides the required support under the center of the belt. You know that area bears the most stress. We have also seen that some flat belts also come with a tracking sleeve or related mechanism in order to keep the belt intact on the flat pulley.

Flat belt pulleys specifications:

  • Belt-width
  • Outside diameter
  • Bore size
  • Hub projection
  • Hub diameter

It is suggested that always before choosing a pulley for your transmission you should check these mentioned specifications properly. Having the right-sized and shaped pulley and belt is important to enjoy a smooth performance. On the other hand, if you choose the wrong sizes, it can lead to major damages.

The tension on a flat belt is crafted by adjusting the distance between pulleys (in order to stretch belts just by a small amount).

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