Walk- behind

KS 51|BM 45

KS 51|BM 45


This hand-operated, extremely robust sweeper with perfect suction, large filter surface and electrical filter shaker excels on heavily soiled surfaces – both indoors and out. The separation of the filter unit, brush unit and motor guarantees a long service life and trouble-free operation. Using the overthrow sweeping principle, small and large debris are collected with ease. The large filter surface can be cleaned with the electrical filter shaker during operation and ensures consistently good sweeping results.

Technical key data
  • Theoretical coverage max. 2720 m²/h

  • Working width max.680 mm

  • Suction yes

  • Brush motor yes

KS 51|BM 45
Product highlights
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Overthrow principle

Effective sweeping: swept-up waste container is filled to the maximum for longer operating periods.

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Electrical filter shaker

Simply shake the filter during normal operations to achieve constantly good sweeping and suction results.

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Break in suction flow

Protects the filter when moving over wet surfaces.

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Traction drive protection

Filters, brush unit and motor all installed separately from each other to guarantee years of reliable operation.

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Large flat pleated filter

Large flat pleated polyester filter with 2m² filter area.

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Extendible swept-up waste container

The plastic swept-up waste container can be emptied quickly and easily.

  • Bulk waste flap

Easily picks up coarse particles during normal operations.

  • Friction wheel drive

Works tirelessly, even over longer periods of operation.

  • Easy-to-service components

Well thought-through design provides quick and easy access to all vital machine components.

  • Large swept-up waste container

Generously sized swept-up waste container means fewer stops to empty it.

  • Sweep right up to the edge

Sweeps thoroughly in every corner, and right up to the wall.

  • Standard: extremely robust sweeping tools

Polypropylene brushes and side brushes: designed to handle the most challenging tasks.

KS 51|BM 45
Optional equipment
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Brush and side brushes made of PP + wire

Optimum dust absorption and low wear when used on coarse surfaces, especially outdoors.

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Roller brush nature

Optimum dust absorption on sensitive surfaces is possible with soft natural bristles.

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Side brush guard

Increased protection for machine, brushes and inventory.

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Maximum safety for the environment and users through filtration of fine dust, suspended particles and very small particles.

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Kit Trolley

Convenient transport of the hopper.

KS 51|BM 45
Technical data
Technical key data
L x W x H 1260 x 630 x 850 mm
Sweeping principle overthrow
Working width w/o side brushes 510 mm
with 1 side brush 680 mm
with 2 side brushes
Empty weight w/o battery 75 kg
Operating weight 137 kg (180 Ah 5)
Traction / drive
Mode of drive Battery
Friction wheel drive
Traction drive yes
Performance 180 Ah 5 (3,1 h)
Dust suction yes
Waste container 45 l
Filter size 2 m²
Shaker electric
KS 51|BM 45

As a specialist for contract cleaning, columbus offers you, in addition to first-class machines, a wide range of accessories for an individual adaption to your equipment and your requirements.