Tornado BD 20/11LT Traction Drive Auto-Scrubber – TS120-S53-U, 48.5 Lbs Pressure
BD 20/11LT Auto-Scrubber — Traction Drive, 18,837 sq ft/hr, 48.5 Lbs Pressure
The Tornado BD 20/11LT (TS120-S53-U) uses a self-propelled traction drive system with 48.5 lbs of brush pressure at 155 RPM to cover 18,837 square feet per hour on a 20-inch cleaning path. Solution tank holds 11 gallons; recovery tank holds 12 gallons. Operates under 70 dB on a 24V system with on-board charger.
BD 20/11LT Drive System and Cleaning Performance
- Drive type: self-propelled traction drive (0.16 HP drive motor)
- Cleaning path: 20 inches
- Productivity: 18,837 sq ft/hr
- Brush pressure: 48.5 lbs
- Brush speed: 155 RPM (0.46 HP brush motor)
- Squeegee width: 31 inches
- Solution tank: 11 gallons; recovery tank: 12 gallons
- Vacuum motor: 0.6 HP, 50 inches water lift
- Noise level: <70 dB
- Power: 24V, on-board charger, Lead Acid or AGM battery options
- Runtime: 3–4 hours per charge
- Weight: 187 lbs (without battery); 350 lbs (with battery)
Traction Drive vs. Brush Assist — When the LT Wins
The LT designation means the BD 20/11LT has a dedicated traction drive motor (0.16 HP) that propels the machine forward independently of the brush motor — operators guide rather than push. On long cleaning shifts in healthcare facilities, schools, and large retail stores, this eliminates operator fatigue from pushing 187+ lbs across hard floors. The brush-assist BD 20/11L costs less but requires the operator to push the machine; the traction drive LT pays back in reduced operator fatigue and higher productivity over multi-hour shifts. Both use the same 20-inch path and 31-inch squeegee.
BD 20/11LT Specifications
| Catalog number | TS120-S53-U |
| Cleaning path | 20 in |
| Productivity | 18,837 sq ft/hr |
| Brush pressure | 48.5 lbs |
| Brush RPM | 155 |
| Squeegee width | 31 in |
| Solution tank | 11 gallons |
| Recovery tank | 12 gallons |
| Water lift | 50 in |
| Drive type | Self-propelled (traction drive) |
| System voltage | 24V |
| Runtime | 3–4 hours |
| Sound level | <70 dB |
| Weight | 187 lbs (w/o battery) |