Columbus Walk-Behind Scrubber Dryer RA 55|BM 40 INOX

Columbus Walk-Behind Scrubber Dryer RA 55|BM 40 INOX is a professional battery-powered floor cleaning machine designed for demanding cleaning environments where durability, hygiene and corrosion resistance are essential. As part of Columbus’s stainless-steel range, this walk-behind scrubber dryer combines a compact 40-litre class design with robust stainless-steel metal components and noBAC® antibacterial tank technology. The machine is specifically designed for applications exposed to high hygienic requirements or aggressive operating conditions, including food industry environments, swimming pools and medical technology facilities.

The Columbus RA 55|BM 40 INOX is built to provide professional cleaning performance while maintaining a compact and manoeuvrable design. It features a 550 mm working width, allowing operators to clean medium-sized hard-floor areas efficiently. With a theoretical maximum coverage of up to 2,200 m²/h, the machine provides a practical balance between productivity and easy handling for facilities that require regular and intensive floor cleaning.

One of the defining characteristics of the RA 55|BM 40 INOX is its stainless-steel construction. Columbus states that all metal parts are made from stainless steel, providing increased robustness and corrosion resistance compared with conventional configurations. This construction makes the machine particularly suitable for locations where cleaning equipment may be exposed to moisture, demanding cleaning conditions or environments requiring durable and hygienic machinery.

The machine also features noBAC® tank technology as standard. Columbus describes this system as using antibacterial tanks for applications with high hygienic requirements. Combined with the stainless-steel construction, this configuration makes the RA 55|BM 40 INOX particularly relevant for facilities where hygiene management is an important part of daily operations.

For floor scrubbing, the RA 55|BM 40 INOX uses one brush or pad holder operating at 180 rpm. The brush system applies up to 25 kg of brush pressure, providing mechanical cleaning action suitable for demanding hard-floor cleaning applications. The combination of brush pressure and controlled water supply helps support efficient cleaning while reducing unnecessary consumption of water and cleaning chemicals.

The machine is equipped with a traction motor rated at 180 W, allowing the scrubber dryer to move at a maximum speed of 4 km/h. The traction drive reduces the physical effort required from the operator and supports more comfortable operation during extended cleaning tasks. This makes the RA 55|BM 40 INOX suitable for professional cleaning teams responsible for regular maintenance of medium-sized floor areas.

Water management is another important aspect of the machine’s design. The RA 55|BM 40 INOX features a 40-litre solution tank for clean water and cleaning solution, together with a 45-litre recovery tank for collecting dirty water. This configuration supports efficient cleaning operations while keeping the overall machine compact enough for practical manoeuvrability in professional environments.

The suction system features a maximum vacuum of 125 mbar and an airflow of up to 28 litres per second. With an 850 mm suction width, the machine is designed to collect dirty water effectively after the scrubbing process. Columbus highlights its suction performance as helping produce streak-free floors that can be walked on immediately after cleaning.

The RA 55|BM 40 INOX includes several important operational features as standard. These include an automatic brush deck up/down function, allowing the operator to lower the brush deck or move it into the transport position at the touch of a button. The machine also features automatic tool change, helping operators change compatible tools more quickly and conveniently.

Another standard feature is the EWD electronic water dosing system. According to Columbus, this system provides a constant water quantity during cleaning operations, supporting consistent cleaning quality. The machine also includes the Quick Stop function, which automatically stops the brush motor and water supply when the operator releases the handle. These features are designed to improve operational control and reduce unnecessary resource consumption during cleaning.

With a noise level of approximately 60 dB(A), the Columbus RA 55|BM 40 INOX is designed for relatively quiet operation in noise-sensitive environments. Columbus lists silent operation as a standard feature, making the machine suitable for facilities where reducing operational noise is important.

The machine also supports cleaning close to walls and edges, helping operators achieve more complete cleaning results across the available floor area. Additional design features include an ergonomic adjustable steering handle, an intuitive functional display, accessible service components and maintenance markings that simplify routine machine care. Columbus also highlights that hygiene measures can be applied to critical components in accordance with HACCP requirements.

The Columbus RA 55|BM 40 INOX operates on a 24 V battery system with a maximum power rating of 1,180 W. The official technical data lists compatibility with wet batteries up to 110 Ah and gel batteries up to 105 Ah. The machine has an empty weight of 84 kg and an operating weight of approximately 205 kg with a 105 Ah battery.

Its overall dimensions are 1,250 × 570 × 980 mm, providing a compact format for a professional scrubber dryer with a 550 mm working width. The combination of compact dimensions, traction drive and professional tank capacity makes the machine suitable for cleaning medium-sized facilities while maintaining good manoeuvrability.

Optional equipment is available to adapt the machine to specific operational requirements. Columbus lists options including the ECD electronic chemical dosing system, which helps control the amount of cleaning chemical used, a tool board for carrying manual cleaning equipment, and an integrated charger for convenient battery charging.

Overall, the Columbus Walk-Behind Scrubber Dryer RA 55|BM 40 INOX is a professional floor cleaning solution combining stainless-steel durability, noBAC® hygiene technology, battery-powered mobility and traction drive. With a 550 mm working width, 850 mm suction width, 40-litre solution tank, 45-litre recovery tank, 25 kg brush pressure and theoretical coverage of up to 2,200 m²/h, it is designed for professional facilities that require efficient and reliable hard-floor cleaning under demanding hygienic or operational conditions.

Features

• Stainless-steel metal components
• noBAC® antibacterial tank technology
• Battery-powered operation
• 550 mm working width
• Theoretical coverage up to 2,200 m²/h
• 40-litre solution tank
• 45-litre recovery tank
• 850 mm suction width
• 25 kg brush pressure
• 180 W traction motor
• Automatic brush deck up/down
• Automatic tool change
• EWD electronic water dosing system
• Quick Stop safety and control function
• Quiet operation at 60 dB(A)
• Cleaning close to edges and walls
• Ergonomic adjustable steering handle
• High suction performance
• Optional ECD chemical dosing system
• Optional integrated charger

Uses

• Food industry facilities
• Food processing areas
• Healthcare facilities
• Medical technology environments
• Laboratories
• Swimming pools
• Hotels
• Restaurants
• Commercial buildings
• Industrial facilities
• Production areas
• Medium-sized hard-floor areas
• Professional cleaning applications requiring corrosion resistance and high hygiene standards

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