Kärcher High-pressure washer HD 8/18-4 Cage ST *EU
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The HD 8/18-4 M Cage is an extremely robust, unheated high-pressure washer with a powder-coated steel tube frame for commercial use under demanding conditions and maximum protection of the pump unit.
The mobile high-pressure cleaner HD 8/18-4 M Cage has an extra robust construction with a powder-coated steel tube frame that protects the machine during mobile use under demanding conditions and during frequent transport. The service-friendly machine can be used both vertically and horizontally for maximum flexibility and operational reliability. The EASY!Force spray gun uses the recoil force of the high-pressure jet to completely eliminate the force the user needs to hold and EASY!Lock quick couplings enable handling that is five times faster than conventional screw couplings, without compromising on either robustness or service life, making work less tiring while changing equipment faster. In addition, you can regulate the water flow and working pressure directly on the spray gun with Servo Control. The machine is powered by a 4-pole, low-speed three-phase motor with pressure switch, 3-piston axial pump with brass top cover that reduces energy requirements by around 20%. To protect the high-pressure components, the machine is equipped as standard with automatic pressure relief and a large, fine water filter.
Features and benefits
Durable and robust
Stable steel tube frame protects all components. The steel tube frame can also be used for easy attachment and lashing of the machine in the service vehicle. Robust plastic chassis reliably protects the pump from damage and dirt.
High quality equipment
Automatic pressure relief to protect components and extend their life. Powerful, 4-pole low-speed electric motor. High-quality brass cylinder head.
Easy service
Easy access to the top cover when the bottom of the machine is opened. Quick access to the electrical box by simply removing the cover. Large, easily accessible fine water filter that protects the pump from dirt particles in the water.Increased energy efficiency
- Newly developed three-cylinder axial piston pump that has significantly reduced flow and pressure losses.
- 20 percent increase in cleaning performance and energy efficiency.
Efficient and time-saving solutions
- Smooth EASY!Force flush handle.
- EASY!Lock Quick-release couplings: durable and robust. They are also five times faster than screws.
Flexible use
- Designed for vertical and horizontal operation.
Smart storage of accessories
- Bracket for fixing the foam nozzle.
- EASY!Lock The TR20 allows the power nozzle or a surface cleaner to be stored directly on the machine.
Specifications
Technical data
| Mains voltage (Ph/V/ Hz ) | 3 / 400 / 50 |
| Flow rate (l/h) | 760 |
| Inlet temperature (°C) | 60 |
| Working pressure (bar/MPa) | 30 - 180 / 3 - 18 |
| Max. pressure (bar/MPa) | 270 / 27 |
| Power (kW) | 4.6 |
| Power cable (m) | 5 |
| Water supply | 3/4″ |
| Paint | anthracite |
| Weight (with accessories) (kg) | 44.3 |
| Weight incl. packaging (kg) | 48.6 |
| Dimensions (L × W × H) (mm) | 420 x 460 x 970 |
The following is included
- Flush handle: EASY!Force
- Flush pipe: 840 mm
- Power nozzle
- Servo Control
Standard equipment
- High pressure hose length: 10 m
- High pressure hose type: Premium quality
- Automatic start/stop




Areas of use
- Ideal for use in vehicle washes, in the construction and transport sectors, as well as in industry



