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HT-HH Hydraulic Pressure Cycling System — High Pressure
Hydraulic pressure cycling up to 60 MPa at up to 10 Hz, with separate high- and low-pressure outlets so two pressure levels can run in parallel.
The HT-HH is the fast hydraulic platform: up to 60 MPa, up to 10 Hz, three selectable waveforms. Separate high- and low-pressure outlets let one bench hold two pressure levels at once — the low-pressure side for a pilot or return circuit, the high-pressure side for the working line.
Technical data
| Pressure range | 1 – 60 MPa (10 – 600 bar) |
|---|---|
| Test medium | Hydraulic oil, or water |
| Pulse frequency | 0.1 – 10 Hz |
| Waveform | Sine, trapezoidal, triangular |
| Pressure outlets | High pressure and low pressure, from the same power unit |
| Control | Programmable pressure, waveform and pulse frequency |
| Data | P–T curve display and recording, test data export |
| Environment | Can be combined with a separate temperature chamber |
| Dimensions | 1600 × 1250 × 1865 mm |
What it does
- Runs high-pressure profiles at up to 10 cycles per second — about 36,000 cycles per hour.
- Offers three waveforms, including a trapezoid with a programmable dwell at peak pressure when a square-ish exposure is what the specification calls for.
- Feeds two pressure levels from one power unit, which keeps both sides on the same time base.
- Can be paired with a temperature chamber when the profile has to run hot or cold as well.
Typical use
- Pressure cycling of fuel, brake, coolant and hydraulic lines and their joints.
- Valve bodies, sensor ports and small pressure vessels cycled at working pressure.
- Design-limit work: raising the peak until something yields, then recording where it happened.
- Endurance runs that have to reach six-figure cycle counts inside a working week.
How a unit is specified
Part count, cavity volume and frequency. At 10 Hz the volume displaced per second is ten times what the same fixture needs at 1 Hz, so the fixture design and the pump size have to be decided together — a large manifold that is fine at 1 Hz will cap the frequency at 3 Hz.
Standard and custom
Pump group, servo/proportional control and the two outlets are the standard platform. Fixture stations, port threads and containment are built to the part.
