Karcher BD 50/40 RS

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Karcher BD 50/40 RS Step On Scrubber Drier

Step-on-scrubber-drier with 51 cm working width and 40 l tank capacity. The step-on- machine combines the manoeuvrability of a walk-behind machine with the speed of a ride-on machine.

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Quote: Karcher BD 50/40 RS
Order No. 1.533-171.0

The Karcher BD 50/40 RS combines the productivity of Kärcher’s proven step-on design with the dimensions of a small walk behind machine. With unrivalled visibility, manoeuvrability and cleaning performance from its 50cm disc brush or pad, the 50/40 RS brings unprecedented levels of convenience and productivity to the scrubber drier market.

Features & Benefits

Simple operation
  • Easy to use.
  • eco!efficiency mode saves time, energy, water and cleaning agent.
Automatic filling option
  • The machine is simply connected to the water supply. The water supply is automatically shut off when the machine is filled to capacity.
  • This saves time, as the operator can do other jobs in the meantime.
DS3 dosing system
  • Prevent over-dosage. Optionally available.
Eco mode
  • Saves time, energy, water and cleaning agent.
Compact dimensions.
  • Easy to use.
  • eco!efficiency mode saves time, energy, water and cleaning agent.
Easy changeover
  • Squeegees and brushes can be replaced without tools.
  • Squeegee can be replaced in seconds.
Unique squeegee rotating principle
  • For 100% water pick up.
Extremely easy to manoeuvre
  • For good manoeuvrability, high surface coverage and less subsequent cleaning.
Compact dimensions.
  • Full view 30 cm in front of the vehicle. For precise cleaning.
Compact design
  • Easy to transport and store.


  • Disc brush
  • Curved suction bar
  • Traction drive
  • Battery and charger included
  • Automatic water stop
  • Battery type, maintenance-free
  • Solenoid valve
  • 2-tank system

Technical Data

Working width, brush (mm) 508
Working width, vacuum (mm) 691
Fresh / waste water tank (l) 40 / 40
Max. area performance (m²/h) 2200
Practical area performance (m²/h) 1650
Brush rotation speed (rpm) 180
Brush contact pressure (g/cm²) 20
Battery voltage (V) 36
Battery capacity (Ah) 76
Motor rating (W) max. 1080
Traction motor (W) 157
Weight (kg) 200
Weight with battery (kg) 200
Dimensions (L x W x H) (mm) 1130 x 680 x 1543
Sound level (dB(A)) 66.9
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