Description
A continuous 2-HP three-phase motor delivers variable spindle speeds across a broad 20-Inch work swing without drive belt changes. The JET 20in Variable Drill Press 230V powers through alloy steel using 230V 3-Phase motor muscle. You dial in speed on a handwheel. The pure three-phase electrical requirement bars this heavy industrial machine from single-phase residential garages.
Precision-milled cast iron forms the slotted table and heavy base, soaking up cutting vibration during heavy metal drilling. A 2-HP continuous-duty induction motor connects to 230V 3-Phase utility lines, drawing 6.4 full-load amps to drive variable spindle speeds from 300 to 2000 RPM. The 4-1/2-Inch ground steel column supports the heavy worktable. The machine weighs 630 lbs, measuring 35 inches deep by 24 inches wide across its industrial concrete footprint.
Key Features of JET 20in
Fabricators buy JET 20in variable speed drill presses to punch large holes in structural beams without changing drive belts. The variable speed drive delivers precise spindle RPM for hole saws and standard twist drills.
- High-output 2-HP motor runs on industrial 230V 3-Phase power for continuous plant duty.
- Variable speed drive adjusts spindle rotation from 300 to 2000 RPM at a turn of the dial.
- Wide 20-Inch work swing accommodates large weldments and center holes in broad steel plates.
- Morse Taper 3 spindle socket seats heavy drill arbors and production twist drills without slippage.
- Deep 6-Inch quill stroke handles thick billet drilling with micrometer depth stop repeat accuracy.
- Precision ground cast iron table tilts 45-Degrees left and right for bevel hole boring.
- Large push-button switch box includes thermal motor overload protection to safeguard internal windings.
Variable Spindle Runout Bench Metrics
Bench test indicators confirm total indicated runout (TIR) measures under 0.0009 inches at the Morse Taper 3 spindle nose. Pushing a 1-1/4-Inch drill bit through 1-Inch structural steel drops spindle speed from 450 free RPM to 438 loaded RPM under 400 lbs of manual downfeed downthrust. The 4-1/2-Inch column flexes under 0.003 inches during heavy cutting passes. The 230V motor housing holds temperatures below 122 degrees Fahrenheit after 2-Hours of continuous metal boring cycles in production shop bays.
Shop Floor Handling Field Service
The long downfeed handles give you solid mechanical leverage across the entire 6-Inch quill stroke. Do not turn the speed adjustment knob while the spindle motor is off. Changing variable pulleys on a stationary machine stretches belts and binds internal drive cones. Lock the table clamp handle before loading heavy steel weldments on the table.
- Lubricate the variable speed pulley drive hub with lithium grease every 6-Months.
- Wipe the precision ground cast iron table with rust preventative oil after wet machining shifts.
- Check drive belt wear every 12-Months and replace worn belts before slippage occurs.
Factory Warranty Standard Crate Manifest
JET backs the 20-inch variable speed drill press with a 2-Year commercial warranty covering manufacturer defects. The crated factory shipment delivers the 630-lb drill press, a cast iron worktable, an MT3 drill arbor, an arbor drift key, a hardware pack, and an illustrated technical operating instruction manual.
