Hawk F93-20-01 20-Inch Glide Freedom 2-Speed Floor Machine – 1.5 HP DC, 175/320 RPM

Hawk F93-20-01 Glide Freedom 2-Speed Floor Machine – 175 and 320 RPM

The Hawk F93-20-01 Glide Freedom 2-Speed combines the forward-motion control system of the Glide series with a 1.5 HP DC rectified motor selectable between 175 RPM for stripping and scrubbing, and 320 RPM for spray buffing. The DC motor maintains consistent torque at both speeds without the RPM drop that AC motors exhibit under sustained pad load, making it the right selection when floor conditions vary between passes.

F93-20-01 DC Motor, Speed Range, and Noise by Setting

• Motor: 1.5 HP DC rectified — converts AC line power to DC internally; delivers flat torque at both 175 and 320 RPM under sustained pad resistance.
• Low speed: 175 RPM at 62 dB — quietest stripping setting across the Glide series; below most occupied-facility noise thresholds without earplugs.
• High speed: 320 RPM at 69 dB — spray buffing and finish maintenance speed; GS42 compliant at both settings.
• Weight: 115 lbs — same pad pressure as the XHD model; sufficient for stripping passes with 175 RPM setting.
• Cord: 50 ft industrial grade — 12-3 two-piece with cord lock for standard commercial room coverage.
• Brush size: 19 inch — slightly wider than the 18-inch on the XHD; increases effective cleaning path per pass.

Two-Speed Operation for Strip-and-Buff Programs

Facilities running strip-and-buff cycles in a single shift use the F93-20-01 to run the stripping pass at 175 RPM and switch to 320 RPM for the spray buffing pass without changing machines. The DC motor’s flat torque curve means both speeds hold their rated RPM under pad load—175 RPM stays at 175 under stripping resistance, and 320 RPM holds consistent at the buffing pass when floor finish is partially set. The forward-motion control applies equally at both speeds, making the 320 RPM buffing pass easier to control than a conventional machine at the same speed.

DC Motor Selection for Variable-Speed Floor Machines

In a two-speed floor machine, the motor must perform efficiently at both speed settings without overheating or losing RPM under load. DC rectified motors achieve this through electronic speed control—current is regulated to match the selected RPM rather than relying on mechanical switching. This makes the F93-20-01’s 175 RPM stripping setting as stable under load as its 320 RPM buffing setting, which is harder to achieve in AC two-speed designs that use capacitor switching to change speeds.