Test Rig
Is your hydraulic pump healthy? We test it under real load — performance and endurance — and give you a clear report before a weak pump becomes a breakdown.
What our rig sees: healthy vs worn pump
Flow delivered as pressure rises
Illustrative example. Your report shows the real curves for your pump.
When to get a pump tested
- After a repair or overhaul Prove it’s back to spec before you refit it.
- Before fitting a spare Check a new or stored pump on arrival, not after installation.
- When the machine changes Slower cycles, more heat or more noise can mean a worn pump.
- Incoming quality check Verify purchased pumps meet their rated output.
- Warranty questions Settle them with test data instead of opinions.
How the testing service works
Tell us about the pump
Make, model, displacement, rated pressure and speed, and what’s going wrong.
Send it or bring it in
Deliver the pump to our test facility.
We test it
A performance test, and an endurance run if you need one, with a cycle profile matched to your machine.
You get a report
Curves, efficiency, temperatures and a clear verdict, tagged with your part and serial number.
Two tests, one rig
Performance test
Does this pump still deliver its rated output?
- Steps through pressure and speed under real load
- Plots pressure vs flow and pressure vs power
- Calculates volumetric efficiency on the spot
Endurance test
Will it last in service?
- Runs a custom cycle profile — time, pressure and flow per step
- Repeats it for as many cycles as you specify
- Logs temperatures, pressures and alarms for every cycle
Throughout both tests the rig watches inlet and outlet pressure, main and case-drain flow, speed, power, oil temperature and filter condition, and stops safely on any trip.
What’s in the report
Every test ends with a report you can file, share with your supplier, or use to decide whether to refit, repair or replace.
Case-drain flow is the one to watch: it is oil leaking past worn internal parts, and it rises long before a pump fails outright.
- Pump type
- Piston, load sensing
- Flow at rated pressure
- 72 L/min
- Volumetric efficiency
- 96%
- Case-drain flow
- Within limit
- Peak oil temperature
- 48 °C
- Curves attached
- Pressure vs flow, pressure vs power
Sample values for illustration.
The test software, explained
Built in-house by HVK. Click any screen to see it full size.
Need a rig in your own plant?
Pump makers and large users can have a test rig built for their own line. HVK designs the hydraulics, structure, electrics, instrumentation and software in-house, so one team owns the whole rig.
- Piston, gear or vane
- Fixed or variable
- Load-sensing or pressure-compensated
- End-of-line pass / fail
