Types of Power Transmission

There are various types of power transmission devices commonly used in industry today. Among them for example, chains, gears, v-belts and synchronous belts are widely used. The focus of this exercise will be a general introduction to rubber power transmission belts and more specifically, those v-belts and synchronous belts used in the Heating, Ventilation, Air Conditioning and Refrigeration (HVAC-R) industry.

Power Transmission Belt

The primary function of a transmission belt is to simply transfer rotation from the powered driver pulley to one or more driven pulleys. The transmission belt must be designed and capable of transferring this torque efficiently and reliably. Generally, the most economical component in the system, transmission belts can also act as a “safety fuse” by slipping or breaking under a peak or shock load situation, such as when a drive becomes jammed by debris, which can protect the more expensive components of the system.

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