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SDS Plus D-handle rotary hammers’ ergonomic design reduces fatigue

Words: Terry AdamsMetabo Corporation, a leading international manufacturer of professional grade portable electric power tools and abrasives for industrial, construction and welding applications, offers two ergonomically designed D-handle rotary hammers for use in a range of drilling and chiseling applications. The KHE-D24 and KHE-D28 extend the operators reach and reduce fatigue in both down-drilling and overhead drilling applications.

Ideal for use in through drilling and anchor setting as well as light chiseling in concrete, brick, block and stone, the KHE-D24 and KHE-D28 keep the operator’s hand and arm in alignment with the hole being drilled, maximizing drilling pressure, precision and operator control.

Both SDS Plus rotary hammers feature 12 selectable chisel positions for efficient and comfortable chipping, scaling, leveling, crack chasing or imbedding.

A large control knob on each tool allows easy change over from percussion with rotation, to rotation only and to chipping. The 360º adjustable side handle is rubber coated to dampen vibration and increase the grip, maximizing user comfort and control during operation.

The LongLife 5.6 A motor in the KHE-D24 provides a force of 2.2 joules at 4,600 blows per minute, a no-load rpm of 1,000 and 106 inch-lbs of torque. Drilling capacity is 1” in concrete using solid bits, 3 1/8” in brickwork using thin wall core bits, 1/2” in mild steel and 1 3/16” in softwood.

The KHE-D24 incorporates Variospeed electronics for variable speed control, this aids in starting precise holes. The tools reverse feature comes in handy to remove bits when reinforcement is encountered. A die-cast aluminum gearbox facilitates heat dissipation and increases tool life.

The LongLife 8.2 A motor in the KHE-D28 enables a force of 2.5 joules 4,600 blows per minute, a no-load rpm of 1,000 and 177 inch- lbs of torque. The tool has a drilling capacity of 1 1/8” in concrete using solid bits, 3 1/2" in brickwork using thin wall core bits, 1/2" in mild steel and 1 9/16” in softwood.

The KHE-D28’s electronics are Vario Tacho Constamatic (VTC), making it the fastest in its class. This full-wave electronic speed control enables the rotary hammer to maintain a constant speed between no-load and full load for maximum drilling speed. The tool also features electronic overload protection, a carbon brush wear indicator, as well as a quick-change chuck system allowing for rapid change out of accessories.

Metabo’s S-automatic safety slip clutch helps protect both the operator and rotary hammer from kickback if a bit locks due to hitting rebar.

For improved tool life, both the KHE-D24 and KHE-D28 feature auto-stop carbon brushes and a winding protection grid that deflects airborne debris for maximized motor life.
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