The tools operate on the basis of the hydraulic fluid pressure of up to 720 bar (10,000 psi), which must be provided from a power source. At present, there are three different means of generating pressure. The most commonly used source is a separate power unit, small petrol (gasoline) engine connected to a hydraulic pump. The hydraulic fluid is pressurised in the pump and conveyed in a hose under pressure to the tool.
Alternative power sources are a small electrical pump in the tool powered by a heavy-duty rechargeable battery, and a hand- or foot-operated pump also connected to the tool directly. These are useful for lighter-duty use and do not require the storage space taken up by the separate power unit and associated lengths of hose.
Some manufacturers have begun offering all-electric products driving rotation motors or a screw piston. These are still relatively new on the market and thus may still be somewhat immature but potentially offer many benefits over hydraulic such as but not limited to lower cost of ownership, quicker, more direct and responsive operation, decreased weight and improved portability and handling, and greater reliability.
The advantages of a hydraulic cutter and hydraulic ram
- Rescues quicker and more safely as only one working process is required with a hydraulic ram
- Compact dimensions and low weight
- Minimum size and maximum lift
- Star grip permits fine adjustment without having to twist your wrist
- High grip claws on the piston rod and in the base of the cylinder provide a good hold on sloping and smooth surfaces
- Extensive experience in the production and sales of a hydraulic cutter
Recommended applications of a hydraulic cutter and hydraulic ram
- When rescuing from vehicles, e.g. to press the dashboard away
- For accidents in road, rail and air traffic, and on ships
- Rescue work involving collapsed buildings or natural catastrophes
- Pushing away and lifting obstructions
- Creating and stabilising openings