HiTorque 6770 Deluxe Large Bench Mill

The LittleMachineShop.com HiTorque Large Bench Mill 6770 is our largest mill. It is a significant step up in size, rigidity, and power compared to a mini mill, or even our other bench mills. This bench top mill provides a larger table, more travel, more horsepower, and more rigidity. Compare our standard features and specs to others in this size and price range.

A 1000 Watt (1-1/3 hp) brushless DC motor provides abundant spindle power and tremendous low-end torque. NSK brand Japanese-quality spindle bearings ensure years of quiet operation. A belt drive from motor to spindle eliminates any failure from gears breaking. A simple belt change switches between low range and high range, giving you continuously variable spindle speeds from 80-5000 rpm.

A NEW easy-to-read LED display with built in spindle speed readout allows you clear and easy access to all major controls
• Dial in the spindle speed with the variable speed dial
• Engage tapping mode for easier tapping operations
• Stop and then restart the lathe at a pre-selected speed.

A factory installed, hard wired 3-axis DRO with easy to read display. Magnetic scales are mounted on the table and column. The DRO system provides accurate measurement for the X, Y, and Z axis in increments 0.0002".

The combination of a large table (29.1" x 7.1") and extensive travel along all axis (XYZ: 20.2", 8.5", 11.8") provides a large work envelope. Precision ground ways ensure smooth and accurate movement. Adjustable gibs are on all dovetail ways. Fine feed on Z-axis for precise control.

The mill has a solid (No-Tilt) head and rigid rectangular dovetail column which maintains head alignment (tram) at any height, ensuring years of rigid and "true" milling. Power head lift to raise or lower the mill head with the touch of a button. A handy magnetic "toolbox" on the side of the column provides a convenient place for the spindle wrench and drawbar wrench.

The mill has an R8 spindle for wide tool availability. A true quill and drill press-style handles make for easy drilling. Tapping-mode is another standard feature with a button on the end of each handle allowing you to reverse the spindle to make tapping easy. Electrically interlocked spindle lock for easy, safe tool changes

Standard features include a digital spindle speed display and a separate DRO for the quill which reads in inches and mm. You can automatically resume running at the last-used spindle speed. Spindle fine feed and position lock are also standard.

Large anodized handwheels on the X and Y axes and 10 TPI lead screws (Accurate to .001″) provide better accuracy readings than metric conversions. Ball thrust bearings on feed screws and split nuts on X and Y axes minimize backlash and ensure much smoother movements and less backlash.

The LittleMachineShop.com exclusive version of this machine features:

• Factory-installed 3-axis digital position readout (DRO) with hard-wired tablet display
• Power head lift raises or lowers the mill head with the touch of a button
• Electrically interlocked spindle lock for easy, safe tool changes
• Mounted machine light to highlight work area
• 1000 Watt (1-1/3 hp) brushless DC spindle drive
• R8 Spindle for wide tool availability
• NSK brand Japanese bearings
• 0.001" graduated dials, 0.100" per turn
• Factory installed 3-axis DRO display and Magnetic scales 
• Digital position readout on the quill reads in inches and mm
• Resume running at last-used spindle speed
• Tapping mode for backing taps out and for running in reverse direction
• Solid rectangular column for rigidity
• Dovetail column maintains head alignment at any height
• Large 29.1" x 7.1" (740 mm x 180 mm) X-Y table with anodized handwheels
• E-stop safety power switch
• Spindle speed display on control panel
• Spindle fine feed and position lock
• Fine feed on Z-axis for precise control
• Adjustable gibs on all dovetail ways
• Includes R8 to JT6 drill chuck arbor and 5/8" drill chuck
  
• Magnetic "tool zone" on column for storing drawbar wrench

The HiTorque Bench Mill comes with the following:

• User's Manual (artwork provided by LMS)
• T-slot nuts with 3/8"-16 thread
• R8/JT33 Drill Chuck Arbor
• 16 mm (5/8") Drill Chuck
• Drill chuck key
• L-hex wrench for drawbar
• Open end wrenches 8/10 mm, 14/17 mm, and 17/19 mm
• Hex wrenches 3, 4, 5, 6, and 8 mm
• Poly-V timing belt for high speed range

*This mill is a version of the SIEG SX3.5 built to LittleMachineShop.com specifications.

**WARNING: At over 350 pounds, you and your buddies can't lift this onto your bench. You will need an engine hoist, forklift, or other mechanical assist to move this machine.

See what the difference is between the SIEG drive system and the HiTorque drive system.

You can compare the specifications for our mills.

Here is the Users Manual for the DRO display unit.

Take a look at the HiTorque 6770 Large Bench Mill in action.

• SX3
• 6770_Large_Bench_Mill_Users_Guide | LittleMachineShop.com