Karcher HD 6/15-4 M ST Classic Stationary Pressure Cleaner

Pressure Rating (PSI / Bar):
2,175 PSI (150 Bar) operating pressure
2,755 PSI (190 Bar) maximum pressure

Flow Rate (L/min):
7.5 – 10 L/min (450 – 600 L/h)

Power Type:
Electric – 1 Phase / 220–240 V / 50 Hz
3.4 kW

Water Temperature:
Cold water
Maximum inlet temperature: 60°C

Motor Brand and Type:
4-pole low-speed electric motor
Reduced motor speed for quieter operation and reduced pump wear

Pump Type:
Heavy-duty crankshaft pump with brass cylinder head

Included Accessories:
10 m high-pressure hose (DN6, rated to 250 Bar)
Standard trigger gun
840 mm spray lance
Power nozzle

Application Suitability:
Suitable for stationary installation in vehicle wash bays, food processing facilities, chemical plants, manufacturing, transport and logistics, agriculture, construction, and municipal applications where a permanent pressure cleaning solution is required.

Duty Cycle / Usage Class:
Heavy-duty commercial and industrial use

Mounting / Portability:
Stationary chassis design
Integrated accessory storage
Compact footprint for permanent installation

Dimensions (L x W x H) (Millimetre):
698 x 410 x 498 mm

Weight (kg):
48.3 kg (with accessories)

Safety Features:
Pressure cut-off system
Infinitely variable pressure and water flow adjustment
Large integrated water filter to protect the pump from contamination
Low-vibration operation for increased component life

Additional Features:
Robust stationary chassis construction
Integrated accessory storage
Crankshaft pump with brass cylinder head for long service life
Water suction capability
Classic accessories with EASY!Lock connections for fast accessory changes and secure connections

Warranty & Service Support:
2 Years

The Karcher HD 6/15-4 M ST Classic is a professional stationary cold water pressure cleaner designed for permanent installation in commercial and industrial environments. Delivering 2,175 PSI (150 Bar) operating pressure, up to 2,755 PSI (190 Bar) maximum pressure, and a water flow of up to 10 litres per minute, this compact machine provides reliable cleaning performance for wash bays, workshops, manufacturing facilities, transport depots and other fixed cleaning installations.

Operating from a convenient 220 to 240 V single-phase power supply, the HD 6/15-4 M ST Classic provides professional pressure cleaning performance without requiring three-phase power. This makes it particularly suitable for businesses looking to install a permanent pressure cleaning system where standard single-phase electricity is available.

Low-Speed 4-Pole Motor for Professional Use

At the heart of the HD 6/15-4 M ST Classic is a durable 4-pole low-speed electric motor designed for demanding commercial applications. The reduced operating speed helps minimise noise and vibration while reducing mechanical wear on the pump and drive components.

Combined with a robust crankshaft pump featuring a brass cylinder head, the low-speed motor provides excellent durability and long service life for businesses that rely on their pressure cleaning equipment regularly.

The machine can also accept inlet water temperatures of up to 60°C, providing additional cleaning flexibility where a suitable warm water supply is available.

Built for Permanent Pressure Cleaning Installations

Unlike portable pressure cleaners, the Karcher HD 6/15-4 M ST Classic has been specifically designed for stationary installation. Its compact 698 x 410 x 498 mm chassis allows the machine to be incorporated into wash bays, plant rooms, workshops and other dedicated cleaning areas without occupying excessive space.

This makes it particularly well suited to businesses requiring a reliable pressure cleaner that remains permanently installed and ready for regular use.

Integrated accessory storage helps keep equipment organised, while the robust chassis protects the machine's internal components in busy commercial and industrial environments.

Adjustable Pressure and Water Flow

Infinitely variable pressure and water flow adjustment allows operators to tailor the machine's output to different cleaning tasks. This provides greater control when moving between general washdown, equipment cleaning and more demanding applications.

A pressure cut-off system helps reduce unnecessary machine operation when the trigger gun is released, while the large integrated water filter protects the high-pressure pump against contaminants entering through the water supply.

Professional Karcher Accessories

The Karcher HD 6/15-4 M ST Classic is supplied with:

• 10 m DN6 high-pressure hose rated to 250 Bar
• Professional trigger gun
• 840 mm spray lance
• Power nozzle
• EASY!Lock accessory connections

Karcher's EASY!Lock connection system allows accessories to be connected and changed quickly while maintaining the strength and reliability required for professional applications.

Ideal Applications

The Karcher HD 6/15-4 M ST Classic is ideal for:

• Vehicle wash bays
• Transport and logistics depots
• Manufacturing facilities
• Workshops
• Food processing facilities
• Chemical plants
• Agricultural facilities
• Construction businesses
• Municipal facilities
• Equipment wash areas
• Industrial maintenance
• Permanent commercial washdown stations

Its combination of single-phase electric power, low-speed motor technology, heavy-duty crankshaft pump and stationary design makes it an excellent solution for businesses requiring a dependable fixed pressure cleaning system.

Why Buy From Hytec Services?

We proudly supply Karcher commercial and industrial pressure cleaners Australia-wide, with ongoing servicing, repairs and maintenance available throughout the Illawarra, South Coast, Southern Highlands, Macarthur, Southern Sydney and surrounding NSW regions. Backed by more than 40 years of industry experience, Hytec Services provides expert advice, genuine spare parts and dependable after-sales support to keep your equipment performing at its best.

As an experienced Karcher dealer and service agent, Hytec Services can also assist businesses with selecting the right pressure cleaning equipment for their application.

If you're looking for a compact single-phase stationary pressure cleaner for a wash bay, workshop or industrial facility, the Karcher HD 6/15-4 M ST Classic provides the durability, efficiency and professional cleaning performance required for demanding commercial environments.