Milwaukee 1-5/8 In. Electromagnetic Drill Kit

Description

Bore clean structural bolt holes through equipment trailer frames and mower decks with dependable shop power. The Milwaukee 1-5/8 In. Electromagnetic drill kit delivers 1-5/8 inch annular cutting capacity using a corded 13-amp motor. This commercial drill features a two-speed mechanical gearbox. It requires flat carbon steel plate to maintain full electromagnetic adhesion.

Rigid cast aluminum forms the slide column and motor housing, preventing quill deflection under heavy manual feed downforce. The 13-amp motor pairs with a mechanical two-speed gearbox, delivering 400 RPM for large annular cutters and 690 RPM for small cutters. An electromagnetic base produces 2000 lbs of holding force to lock the tool in position. A tool-free 3/4-inch Weldon arbor swaps cutters without hex keys.

Key Features of Milwaukee 4272-21

Equipment rebuilders and trailer fabricators use this two-speed magnetic drill for chassis modifications and bracket fabrication. The tool-free arbor speeds up cutter size changes during production runs.

• 1-5/8 inch annular cutter capacity bores clean fastener holes through structural plate steel
• 13-amp industrial motor delivers steady spindle power under continuous chip loads
• Two-speed mechanical gearbox provides 400 RPM and 690 RPM for matched cutting speeds
• Tool-free 3/4-inch Weldon quick-change arbor accepts standard commercial annular cutters
• 2000 lb electromagnetic base secures the drill frame to carbon steel work surfaces
• Tool-free feed handle moves from left to right side for clearance against obstructions
• Integrated LED work light illuminates the drilling surface inside dark machine bays

Two-Speed Spindle Dyno Test Telemetry

Spindle dyno tests confirm 8.4 foot-pounds of torque at 400 RPM under full 1-5/8 inch annular cutter load. Magnetic breakaway testing validates 2050 lbs of holding force on 1-inch ASTM A36 plate. Electric motor current draw stabilizes at 11.2 amps under heavy feed pressure in 1/2-inch plate. Spindle radial runout remains under 0.0010 inches across full travel. Acoustic output registers 76 dBA.

Shop Operation Rules Safety Limits

Clear all metal shavings and oily grease from the plate mounting area before flipping the magnet toggle switch. Secure the nylon safety strap around the machine when drilling horizontal or overhead equipment frames. Do not run cutters dry without filling the gravity-feed coolant bottle with cutting lubricant.

• Dovetail slide gib adjustments demand hex screw checks every forty drilling hours
• Tool-free arbor collar mechanism demands solvent flushes to clear trapped metal chips
• Electromagnetic base bottom surface needs inspection for burrs using a precision flat file

Milwaukee Mag Drill Warranty Manifest

Milwaukee Tool backs this electromagnetic drill with a 5-Year commercial warranty covering motor and gearing defects. The heavy transport case contains the 4272-20 drill, coolant tank, safety strap, arbor, pilot pins, and user guide.