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Direct vs. belt drive pumps: which is best for your business?

When shopping for a new pressure washer, one of the main factors to consider is what type of pump you should get: direct drive or belt drive? This is because your pressure washer pump has the important job of generating a high-pressure water stream. To help you determine which option is right for your business, here’s a comparative look at direct drive pumps vs belt drive pumps.

Direct drive pump

Direct drive pumps are mechanically simpler than belt drive pumps. This kind of pump mounts directly on the motor or engine, has few moving parts, and is the most cost-effective option. Due to the simplicity of direct drive pumps the design is more compact which is useful when used in tight areas.

However, the bearings and other components on a direct drive pump wear out faster than those on a belt drive pump. This is due to the fact that a direct drive pump spins at a higher RPM (revolutions per minute) speed compared to a belt drive pump. Because of the way that the pump is directly and motor are interconnected to the motor/engine, the pump RPM and motor/engine RPM are always the same in a direct drive pump.

In addition, direct drive pumps can’t do not draw water effectively from a standing water source. Instead, water has to be driven into the pump with a hose.

Direct drive pumps can be a cost-effective option for businesses that only use their pressure washer periodically and are less concerned about wear and tear of the washer’s components.

Belt drive pump           

Unlike direct drive pumps, belt drive pumps aren’t directly attached to the motor or engine. Instead, they’re connected to the motor or engine via a pulley system. As the pump isn’t resting on the motor, this reduces stress on the motor system. Alternatively as the pump isn’t resting on the engine, this reduces stress on the pump system as it is not susceptible to the engines vibrations. On a belt drive pump the belts and pulleys also absorb vibration, reducing pump fatigue. As a result of this absorption there is periodic maintenance to adjust belt tension to insure your pump is running efficiently and at peak performance. There is some loss of efficiency due to additional friction from the belts and pulleys. All Hotsy units are designed to insure that this minimal loss of efficiency will not affect pump performance.

The pulley mechanism also reduces the pump’s RPMs. In addition Secondly, the crankcases for belt drive pumps have higher oil capacities. Lastly the pump is more removed from the heat given off by the motor and engine. As a result of these features, there’s minimal friction between the belts and pulleys the crankshaft and connecting rods, bearings, and other moving parts in the pump crankcase., and Cooler ambient air and less heat produced due to friction losses allows the belt drive pump to runs cooler than the direct drive pump. Belt drive pumps are therefore subject to less wear and tear than direct drive pumps and have a longer lifespan.

Belt drive pumps allow for a longer stroke and increased stroke time due to the reduced RPM. This improves the pumps ability to draw water and detergent from a standing source, it has greater suction capability.

Due to their durability and longevity, belt drive pumps are the better option for businesses that use their pressure washer frequently or use it for intensive cleaning tasks.

Pumps and pressure washers in Western Canada

Hotsy pressure washers are available with both direct drive and belt drive pumps. All Hotsy pumps are durable and high-performance and are backed by a seven-year warranty. Turn to the knowledgeable team at Hotsy Water Blast for help determining which pressure washer pump and model best correspond to your business’ needs. Contact us today to learn more about our products.