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By Kim Johnston
Associate Editor
Slot cutters
A slot cutter is an attachment for pavement repair. Slot cutters basically have two uses. First, they can be used on roadways or parking lots to cut out only a section of the asphalt or concrete that needs repair, rather than having to tear up the entire area. A slot cutter is also useful when repairing cracks. If a crack is not wide enough to accept repair material it can be widened or deepened with a slot cutter and then filled with the repair material. This way the crack repair will hold better, Guthrie says.
A slot cutter is a toothed-wheel, similar to a saw blade. Coneqtec/Universal offers slot cutters that can cut 7 in., 9 in., or 12 in. deep, each with a 3-in. cutting width.
The SSG-7 and SSG-9 have 20 teeth on their wheels, and the SSG-12 has 24 teeth. With the two deeper cutters, the SSG-9 and SSG-12, the minimum hydraulic horsepower required is 45 - compared to the minimum of 35 for the SSG-7.
Although Guthrie points out that slot cutters don't have much to them - basically just a hydraulic motor run by the hydraulics of the skid steer and the toothed-wheel - he does say a contractor has two options with the hydraulic motors: direct-drive motors or planetary systems. A direct-drive motor delivers the rated power directly from the motor. Planetary motor systems use a smaller motor with an extra gear box and gears to help produce the rated power. Guthrie says the Coneqtec/Universal slot cutters, as well as all of its other attachments, use a direct-drive motor system.
Drop Hammer
A drop hammer attachment is an alternative to hydraulic breakers. It allows for fast concrete or asphalt demolition, creates less stress on the skid steer and operator, and results in a cleaner surface, according to Odegaard. These attachments work well for jobs that require demolition of large, flat concrete slabs that still need to be driven over.