Hawk F04-20-01 2-Speed Floor Machine for Stripping and Spray Buffing
The Hawk F04-20-01 pairs a 1.5 HP DC rectified motor with two selectable speeds—165 RPM for stripping and scrubbing, 300 RPM for spray buffing and finish application—on a single 20-inch machine. At 94 lbs, the machine weight delivers substantial pad pressure for aggressive stripping work, while the quieter 62 dB low-speed setting allows operation in occupied facilities.
F04-20-01 Motor, Speed Selection, and Noise Output
- Motor: 1.5 HP DC rectified — DC motor delivers consistent torque at both speeds without the speed fluctuation common in AC motors under load.
- Low speed: 165 RPM at 62 dB — stripping and scrubbing speed; quiet enough for daytime cleaning in offices and schools.
- High speed: 300 RPM at 69 dB — spray buffing and polish speed; matches mid-range burnisher output on maintained floors.
- Weight: 94 lbs — provides downward pad pressure for black and green pad work without added counterweights.
- Pad size: 20 inch — covers 20% more floor area per pass than a 17-inch machine.
Applications by Speed Setting
At 165 RPM, the F04-20-01 strips finish from VCT, cleans grout lines on tile, and scrubs high-traffic terrazzo with green pads. Switching to 300 RPM turns the same machine into a spray buffer for gyms, corridors, and lobby floors where a high-gloss finish is required. Two-speed capability eliminates the need for separate stripping and buffing machines in smaller operations or when transportation between sites is a constraint. The DC motor maintains consistent pad speed under load, which reduces uneven finish application caused by speed variation.
DC Motor Advantage for Commercial Floor Care
DC rectified motors convert AC line power to DC internally, producing a flat torque curve across the RPM range. On stripped floors where pad resistance peaks, the F04-20-01 maintains 165 RPM without bogging—preventing the pad from dragging and leaving swirl marks. This matters most on wide-area stripping jobs where inconsistent speed creates visible lap lines in the final finish coat. The motor also runs cooler than AC equivalents at sustained loads, extending brush and pad life.
| Specification | Value |
|---|---|
| Model | F04-20-01 |
| Pad Size | 20 inch |
| Motor | 1.5 HP DC rectified |
| Low Speed | 165 RPM |
| High Speed | 300 RPM |
| Weight | 94 lbs |
| Noise (low/high) | 62 dB / 69 dB |
