Product Description
Karcher BD 50/55 Walk-Behind Auto Scrubber
The Karcher BD 50/55 is a professional 20-inch walk-behind disc auto scrubber designed for daily commercial floor cleaning. Its traction-drive system provides smooth powered movement, while large 14.5-gallon solution and recovery tanks help reduce stops for filling and emptying.
Built for healthcare facilities, schools, retail stores, offices, hospitality properties, and other demanding commercial environments, the BD 50/55 combines a compact footprint with durable die-cast aluminum scrub-deck and squeegee components. Choose between the AGM battery package or the available lithium configuration based on your facility’s charging and operating needs.
Quick Highlights
Available Battery Configurations
| Configuration | Manufacturer Part Number | Battery Package | Price | Price Adjustment |
|---|---|---|---|---|
| BD 50/55 W Bp Classic | 9.998-002.0 | 24V / 100Ah AGM batteries with shelf charger | $9,070.00 | Base Price |
| BD 50/55 Lithium | 9.002-233.0 | Lithium battery configuration | $9,725.00 | +$655.00 |
Choosing AGM or Lithium
- AGM Configuration: Includes 24V / 100Ah sealed AGM batteries and a shelf charger. It provides a lower initial purchase price and does not require battery watering.
- Lithium Configuration: Designed for facilities that prefer lithium battery technology, reduced routine battery maintenance, and greater charging flexibility.
- Important: Battery specifications and charging equipment may differ by configuration. Select the complete machine package that matches your facility’s operating schedule.
Product Data
- Manufacturer: Karcher
- Series: BD 50/55
- Machine Type: Walk-Behind Disc Auto Scrubber
- Cleaning Path: 20 in
- Brush Type: Disc Brush or Pad Driver
- Brush Quantity: 1
- Brush Diameter: 20 in
- Squeegee Width: 33.5 in
- Drive System: Traction Drive
- Solution Tank: 14.5 gal
- Recovery Tank: 14.5 gal
- Theoretical Productivity: Up to 27,500 ft²/hr
- Practical Productivity: Up to 17,500 ft²/hr
- Brush Pressure: 59 lb
- Brush Speed: 180 RPM
- Operating Noise Level: 65 dBA
- Vacuum Motor: 500 watts
- Vacuum Airflow: 51 CFM
- Water Lift: 48 in
- Weight with AGM Batteries: 379 lb
- Dimensions: 52" L x 22.5" W x 42" H
Recommended Applications
- Daily commercial hard-floor cleaning
- Healthcare facilities
- Retail stores and supermarkets
- Schools and universities
- Office buildings
- Hotels and hospitality facilities
- Warehouses and light industrial areas
- Municipal and government buildings
- Hallways and medium-size open floor areas
Key Features
Powered Traction Drive
The powered traction system moves the scrubber smoothly across the floor and helps reduce the pushing effort required from the operator.
Durable Scrub Deck
The die-cast aluminum scrub deck is engineered for durability in demanding daily commercial cleaning applications.
Durable Squeegee Assembly
The parabolic squeegee assembly supports effective water recovery and is built with durable die-cast aluminum components.
Large Tank Capacity
Matching 14.5-gallon solution and recovery tanks help operators clean longer before refilling or draining the machine.
Simple Operator Controls
Straightforward machine controls help shorten operator training and reduce the likelihood of operating errors.
Home Base Compatibility
Optional Home Base accessories allow operators to carry bottles, mops, hooks, and manual cleaning tools directly on the scrubber.
Best For
- Medium-size commercial facilities
- Daily maintenance cleaning
- Facilities requiring powered traction assistance
- Occupied areas that benefit from quieter equipment
- Operators who need larger tank capacity in a walk-behind format
- Facilities choosing between AGM and lithium battery technology
- Smooth hard floors requiring disc-brush or pad-driver cleaning
Not Ideal For
- Ride-on scrubber applications
- Cylindrical sweeping and scrubbing applications
- Orbital floor stripping applications
- Carpet extraction
- Escalator cleaning
- Outdoor pressure washing
- Large facilities that require a high-capacity ride-on scrubber
Technical Specifications
- Cleaning Width: 20 in
- Brush Type: Disc
- Brush Quantity: 1
- Brush Diameter: 20 in
- Brush Speed: 180 RPM
- Brush Contact Pressure: 59 lb
- Squeegee Width: 33.5 in
- Drive Type: Traction Drive
- Solution Capacity: 14.5 gal
- Recovery Capacity: 14.5 gal
- Theoretical Productivity: 27,500 ft²/hr
- Practical Productivity: 17,500 ft²/hr
- Operating Noise Level: 65 dBA
- Vacuum Motor Rating: 500 watts
- Vacuum Airflow: 51 CFM
- Water Lift: 48 in
- AGM Battery Configuration: 24V / 100Ah AGM
- AGM Charger: Shelf Charger
- Weight with AGM Batteries: 379 lb
- Dimensions: 52" L x 22.5" W x 42" H
Cleaning Productivity
The BD 50/55 combines a 20-inch disc deck, powered traction drive, and 14.5-gallon tanks to support efficient daily cleaning in medium-size commercial facilities.
Sized for hallways and medium commercial areas.
Helps increase coverage during routine cleaning.
Matching tanks help simplify cleaning cycles.
Supports effective routine scrubbing performance.
Actual productivity varies by floor condition, obstacles, filling and draining time, operator technique, battery condition, pad or brush selection, and facility layout.
Included with the AGM Classic Configuration
- Karcher BD 50/55 W Bp Classic auto scrubber
- 24V / 100Ah AGM battery system
- Shelf battery charger
- 4.778-008.0 – 33.5" parabolic squeegee assembly
- 4.400-011.0 – 33" red suction blades
- 4.905-026.0 – 20" medium red disc brush
- 4.762-534.0 – 20" pad driver with quick-change coupling and centerlock
- Operator and safety documentation
Included with the Lithium Configuration
BD 50/55 Lithium – 9.002-233.0
- Karcher BD 50/55 Lithium walk-behind auto scrubber
- Lithium battery system
- Compatible lithium battery charger
- 20" single-disc scrub deck
- 33.5" parabolic squeegee assembly
- 33" suction blade set
- 20" medium red disc brush
- 20" pad driver with quick-change coupling and centerlock
- Operator manual and safety documentation
Optional Accessories and Replacement Parts
Select your exact machine model below before ordering accessories or replacement parts.
BD 50/55 W Bp Classic Parts
Machine Part Number: 9.998-002.0
Battery System: 24V / 100Ah AGM
Squeegee Assembly and Suction Blades
- 4.778-008.0 – 33.5" parabolic squeegee assembly
- 4.400-011.0 – 33" red suction blade set
- 4.400-005.0 – 33" transparent suction blade set
- 2.644-228.0 – Stackable deflector-roll kit for the squeegee
Disc Brushes
- 4.905-026.0 – Medium red disc brush for general cleaning
- 4.905-028.0 – Very soft disc brush for delicate floor surfaces
- 4.905-027.0 – Soft natural-fiber disc brush for cleaning and polishing
- 4.905-029.0 – Hard black disc brush for stubborn soil and durable floor surfaces
Pad Driver
- 4.762-534.0 – 20" pad driver with quick-change coupling and centerlock
Home Base and Tool Storage Accessories
- 5.035-488.0 – Home Base adapter and cable hook kit
- 4.070-075.0 – Universal hook kit
- 4.039-271.0 – Mop holder
- 6.980-077.0 – Double hook; requires Home Base kit 5.035-488.0
- 6.980-078.0 – Mop clip; requires Home Base kit 5.035-488.0
- 6.980-080.0 – Bottle hook; requires Home Base kit 5.035-488.0
Recommended Chemicals
- Karcher Neutral Floor Cleaner – Routine maintenance cleaning on compatible finished floors.
- Karcher Compass Clean – 8.695-241.0 – Alkaline cleaner for heavier soil and restorative cleaning.
- Pioneer Eclipse Lumen L350 Neutral Cleaner – Daily maintenance cleaner for compatible hard floors.
- Floor Care Resources and Chemical Guides
Free Commercial Equipment Consultation
Monster Janitorial can help determine whether the AGM or lithium BD 50/55 configuration is the better fit for your facility.
- Compare AGM and lithium battery configurations
- Review facility size and estimated cleaning time
- Select the correct disc brush, pad driver, pads, and squeegee blades
- Discuss floor types, chemical compatibility, and cleaning schedules
- Request a commercial quote or product demonstration
Email sales@monsterjanitorial.com or call 956-772-4842.
Manuals and Documents
- Karcher BD 50/55 W Bp Classic Product Information Sheet – 9.998-002.0
- Karcher BD 50/55 Operating Manual
- Karcher BD 50/55 Safety Information
- Karcher Parts Manuals and Model Lookup
Replacement Parts and Model Lookup
MJ University – Auto Scrubber Learning Center
Learn how to choose, operate, and maintain commercial automatic scrubbers, including guidance on batteries, brushes, pads, squeegee blades, cleaning chemicals, and daily maintenance.
Manufacturer Warranty
The Karcher BD 50/55 is covered by the applicable Karcher commercial equipment warranty against qualifying defects in materials and workmanship under normal approved commercial use.
- Warranty coverage may vary by machine component and configuration.
- Battery warranty coverage may differ between AGM and lithium systems.
- Chargers may carry separate warranty terms.
- Brushes, pads, squeegee blades, seals, hoses, and other wear items may have limited coverage.
- Proof of purchase and machine serial number may be required.
- Damage caused by improper charging, unapproved chemicals, misuse, freezing, or inadequate maintenance may not be covered.
Contact sales@monsterjanitorial.com for current warranty verification.
Frequently Asked Questions
Is the BD 50/55 self-propelled?
It uses a powered traction-drive system that assists forward movement and improves handling during cleaning.
What is the cleaning width?
The machine uses a 20-inch single-disc cleaning deck and a 33.5-inch parabolic squeegee.
What is the difference between the AGM and lithium options?
The AGM configuration includes 24V / 100Ah sealed AGM batteries and a shelf charger. The lithium configuration uses lithium battery technology and is offered as a separate machine package.
Does the AGM model include a brush and pad driver?
The AGM Classic product sheet lists the medium red disc brush and 20-inch pad driver as included equipment. Confirm package contents for the lithium configuration before ordering.
Can the machine be used with cleaning pads?
Yes. The compatible 20-inch pad driver allows approved floor pads to be used for scrubbing and maintenance applications.
Is this a cylindrical scrubber?
No. The BD 50/55 is a single-disc walk-behind scrubber. It does not use a cylindrical sweeping and scrubbing deck.
Institutional Purchasing Support
- D-U-N-S Number: 080901706
- UEI Number: U4TYL7A5LEN9
- Purchase order support for approved schools, government agencies, and institutions
- Tax-exempt account setup assistance
- Bid and specification support
- Commercial quote support for facility managers, contractors, and procurement departments
Why Choose Monster Janitorial?
- Authorized Karcher commercial equipment support
- Fast order processing
- Expert assistance with scrubbers, batteries, chargers, brushes, pads, squeegee blades, chemicals, and replacement parts
- Commercial quote support for schools, healthcare facilities, contractors, government buyers, and facility teams
Questions? Email sales@monsterjanitorial.com or call 956-772-4842.
Tax-Exempt Purchasing
Create an account and email your tax-exempt certificate to sales@monsterjanitorial.com.
