Injection moulding and press hydraulic oil monitoring
We monitor hydraulic oil cleanliness (ISO 4406), water and viscosity in the hydraulic unit. You see the signs of valve and pump problems early.
- 1Vibration · Pump bearing
- 2Temperature · Pump bearing
- 3Oil sensor · Return line
- 4Particle sensor · Return line
Monitored equipment
Injection machine hydraulic unit, hydraulic pump (fixed or variable displacement), servo and proportional valves, hydraulic press unit, cooling circuit.
| Topic | In this industry |
|---|---|
| Main oil risk | Particles, water, viscosity drift |
| Monitoring goal | Hydraulic oil cleanliness |
| Benefit | Helps protect valve and pump life. |
The right product and monitoring level are defined at the quote stage.
What we measure
In the oil, viscosity, water and moisture, oil ageing, particle contamination (ISO 4406 code) and the wear-metal trend are measured. On the machine, vibration level and temperature are monitored. When a reading moves away from the machine's normal range, the screen changes from green to amber or red. Warning signs and what they mean
What we do not measure: metal identification (which metal a particle is), acid and base number (TAN/TBN) and vibration spectrum analysis (FFT). These tests need a laboratory and a specialist. DataMonitor does not replace them. It works alongside them. The system watches for warning signs and gives early warning. It does not diagnose faults.
Plastic injection & presses FAQ
What ISO 4406 code should hydraulic oil have?
No single code suits every machine. The target cleanliness comes from the machine manufacturer's recommendation for the pumps and valves in the system. Higher numbers mean dirtier oil. An online particle counter shows the code continuously. You can set a target from that recommendation and your own trend, and you get an alarm when the code rises.
When should injection machine hydraulic oil be changed?
A fixed number of hours would be misleading. The decision should combine the manufacturer's recommendation with the measured condition of the oil. Viscosity drift, rising water and the dielectric (ageing) trend show when a change is coming. If the particle code is rising, check the filter and entry points first. That way the oil is changed neither too early nor too late.
How do particles in oil damage valves?
Hard particles get into the tight clearances between the moving parts of a valve. They wear the surfaces and can make the parts stick. Dirty oil is one of the main causes of valve and pump wear. Watching the ISO 4406 code helps you see contamination rising before a valve fails.
A quote for your machine
The machine, the oil in use and the problem are discussed by phone. The right product and monitoring level are defined. The price is sent as a written quote.
- Product recommendation for your machine
- Written quote
- Installation and alarm set-up included