Power Unit Sizing Mistakes and How to Avoid Them
Sizing a hydraulic power unit (HPU) isn't just about calculating horsepower or selecting components; it's about ensuring your system performs as intended over the long haul. Whether your application involves lifting, pressing, filtering, or transferring fluid, proper sizing can mean the difference between smooth operation and chronic performance problems.
Mistake #1: Failing to Understand the Full Application
The first and most costly mistake? Not thoroughly understanding the application. A hydraulic system's job may seem straightforward, but performance depends on more than force and flow. What exactly is the system doing? Holding pressure? Cycling rapidly? Powering multiple actuators at different intervals?
- How much force, speed, and flow is required?
- How often will the system run (duty cycle)?
- Where will it be used - indoors, outdoors, in extreme climates, or at elevation?
Mistake #2: Undersizing the System
Trying to save money by going smaller usually backfires. Undersized HPUs can't meet system demands consistently, which leads to:
- Poor performance under load.
- Increased wear and tear on components.
- Excessive heat buildup, which then requires additional cooling
Mistake #3: Oversizing "Just to Be Safe"
On the flip side, oversizing a unit "just in case" introduces a new set of problems:
- Higher upfront costs for pumps, motors, and larger reservoirs
- Greater energy consumption and inefficient operation.
- Space constraints in an already crowded plant floor.
Mistake #4: Overlooking Environmental and Service Factors
How FSC Helps You Get It Right
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