Description
Cut clean bolt holes through tough alloy steel trailer channels and commercial mower decks without motor stall. The Champion Cutting Tool AC42 Varibrute magnetic drill press delivers 1-5/8 inch annular capacity with variable speed control. This variable-speed drill uses an electronic motor governor. The tool requires a minimum 3/8-inch carbon steel plate to maintain magnetic holding force.
Die-cast aluminum alloy forms the upright drill frame, providing structural rigidity while keeping total tool weight to 28 lbs. The 1200-watt variable speed motor pairs with electronic speed control, matching spindle RPM to cutter diameter and material hardness. A reversible drive mode allows thread tapping operations. The high-traction electromagnetic base generates 2860 lbs of holding force to lock the tool in position.
Key Features of Champion AC42
Fabrication mechanics use this variable-speed magnetic drill to bore holes in high-strength alloy steels. The variable speed dial prevents cutter teeth from overheating on tough metals.
- 1-5/8 inch annular cutter capacity cuts clean holes through alloy plate and channel steel
- Electronic variable speed control adjusts spindle RPM to match cutter size and material
- Reversible motor rotation enables mechanical thread tapping operations up to 5/8-inch
- 1200-watt industrial motor produces continuous spindle torque for heavy metal fabrication
- 2860 lb electromagnetic base secures the drill frame to carbon steel workpieces
- Internal arbor lubrication system feeds cutting fluid direct to annular cutter teeth
- Reversible feed handle moves from left to right side for clearance in tight spots
Variable Speed Spindle Dyno Telemetry
Spindle dyno tests confirm 7.6 foot-pounds of continuous torque at 320 RPM under full 1-5/8 inch cutter load. Electronic speed regulation holds spindle RPM within 5 percent of target speed under varying downforce. Magnetic breakaway testing validates 2880 lbs of holding force on 1-inch ASTM A36 plate. Electric motor current draw measures 10.1 amps during heavy drilling in 5/8-inch plate. Acoustic output registers 77 dBA.
Fabrication Setup Safety Boundaries
Wipe all metal chips and mill scale off the steel workpiece before flipping the magnet power switch. Fasten the nylon safety strap around the machine when drilling on vertical machinery uprights or overhead structures. Do not operate this electromagnetic drill on non-magnetic stainless steel or aluminum.
- Electromagnetic base bottom plate requires stone dressing to remove metal burrs
- Quill slide dovetail tracks demand brass gib screw adjustments to eliminate side play
- Arbor coolant seal rings need visual checks to stop fluid leaks into motor windings
Champion AC42 Drill Warranty Manifest
Champion Cutting Tool backs this magnetic drill with a 1-Year commercial warranty covering motor windings and electronic speed controls. The package contains the AC42 drill, coolant tank, safety strap, wrenches, and heavy-duty case.