New Tennant FM-20-DS Heavy Duty Dual Speed 20" (508mm) Floor Machine
Our Take (from the SES Sales Team)
“If your crew is still scrubbing with one machine and buffing with another, the FM-20-DS can replace both. It is a 20 in corded floor machine with two speeds: 185 rpm for scrubbing and stripping, and 330 rpm for spray buffing and polishing. That makes it a practical all-around machine for schools, churches, clinics, offices and retail stores that maintain VCT and other finished hard floors. Tennant built it around a 1.5 hp permanent magnet DC motor driving a triple planetary gearbox, for heavy-duty performance. The housing and handle are corrosion-proof rotationally molded polyethylene, and the simplified design needs little maintenance. Operators control it with a twist grip that has a safety lock. It plugs into a standard 120 V outlet with a 50 ft cord, weighs 97 lb and runs at 71 dBA. Tennant also offers an optional 3 gal solution tank, which lets the operator scrub without dragging along a separate bucket.”
A heavy-duty 20 in dual speed floor machine
The Tennant FM-20-DS is a corded 20 in floor machine for scrubbing, stripping and polishing most hard floors. Two speeds let it scrub at 185 rpm and buff at 330 rpm, and a corrosion-proof polyethylene body keeps it looking good for years in schools, healthcare, retail and office buildings.
This listing is the Tennant FM-20-DS Heavy Duty Dual Speed 20 in (508 mm) Floor Machine, which runs on a standard 120 V outlet.
Condition: New.

What you get
Built for daily floor care
Two speeds
Scrub or buff with one machine
| Setting | Speed | Typical use |
|---|---|---|
| Low | 185 rpm | Scrubbing and stripping |
| High | 330 rpm | Buffing and polishing |
Optional solution tank
Features
Simple and durable
- ✓Low and high speeds for scrubbing, stripping and polishing
- ✓Twist-grip operation with a safety lock to protect operators
- ✓Corrosion-proof, rotationally molded polyethylene base and handle
- ✓Simplified design that needs little maintenance
- ✓CSA and ETL approved
Specifications
Tennant FM-20-DS at a glance
| Models | FM-20-DS Dual Speed Floor Machine |
|---|---|
| Head size | 20 in (510 mm) |
| Pad speed | 185 rpm scrub / 330 rpm buff |
| Motor | 1.5 hp (1.12 kW), permanent magnet DC, 66 frame, dual speed |
| Gearbox | Triple planetary, 10:1 ratio |
| Electrical | 120 V, 12 A, 1,100 W |
| Power cord | 50 ft (15 m), 14 gauge, 3-wire SJT |
| Max coverage | 3,000 sq ft/hr (279 m²) |
| Optional solution tank | 3 gal (11.4 L), 0.1 gpm (0.38 L/min) |
| Handle | Twist grip with safety lock |
| Base / handle material | Rotationally molded polyethylene |
| Dimensions (L x W x H) | 23.5 x 20 x 48 in (597 x 510 x 1,219 mm) |
| Weight | 97 lb (44 kg) |
| Sound level | 71 dBA |
| Approvals | CSA, ETL |
| Model Numbers | FM-20-DS (heavy duty dual speed 20 in floor machine) |
Technical specs may include optional equipment that is not included with all units.
Questions
Tennant FM-20-DS: common questions
What is the difference between the FM-20-DS and the FM-20-SS?
The FM-20-DS has two speeds, 185 rpm for scrubbing and 330 rpm for buffing. The FM-20-SS runs at a single 175 rpm.
Can it strip floors?
Yes. Tennant describes the FM-20-DS for polishing, scrubbing and stripping most hard floor surfaces, using the low speed for scrubbing and stripping.
How much floor can it cover?
Tennant rates the FM-20-DS at up to 3,000 sq ft per hour. With the optional 3 gal solution tank, each tank covers about 1,500 sq ft.
What power does it need?
A standard 120 V outlet. The motor draws 12 A, and the machine has a 50 ft power cord.
Not sure the FM-20-DS fits your floors?
Tell our team about the floor, the finish and the cleaning schedule, and we will help you decide if this is the right machine.


