Belt Drive Pumps

Belt Drive Pumps

Belt Drive Pumps

A “Belt Drive” pump has a pulley mounted to its solid shaft and is driven by one or more belts that are attached to a pulley on the motor or engine. The pulley system allows these pumps to turn at a much lower RPM than a direct drive pump (typically 900-1400 RPM). The belt drive pump crankcase has a larger oil capacity. This, combined with the lower RPM of the belt drive pump, allows the pump to run much cooler than a direct drive pump. The pump is isolated from the heat of the engine or motor, also. Belts and pulleys also absorb vibration, reducing pump fatigue. Because of these factors, most heavy use pressure washer applications will demand a belt drive pump. The disadvantage of this system is there is some loss of efficiency due to the additional friction from the belts and pulleys. Plus maintenance is required occasionally to adjust the belts. However, all other things being equal, the belt drive system should provide for the longest pump life.

 

Benefits of Belt Drive:

  • Vibration Absorption
  • Lower RPM
  • Lower Operating Temperature
  • Longer Life

Disadvantages of Belt Drive:

  • Loss of Efficiency
  • More Maintenance Required