Harbor Freight Tools 44991 operating instructions Adjusting the Vertical Support Angle

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2.Adjust the position of the Limit Block (65) up or down. Refer to the Ruler (67) on the side of the Vertical Support (68).

3.Tighten the Handle.

Adjusting the Vertical Support Angle

1.Using the Large Wrench (accessory A), loosen Lock Nut (70) only enough to allow movement of the Vertical Support (68).

Caution: Avoid injury or damaging machine, hold the Vertical Support in place to keep it from fall- ing to the left or right during adjustment.

(68)

(70)

2.Adjust the Vertical Support angle as needed (45 degrees left or right, maximum). Check Ruler (44) for angle.

3.When the Vertical Support is at the desired angle, tighten Lock Nut (70) again.

Basic Drilling and Milling Procedure

During the following procedure, it may be helpful to refer to the machine photo on page 5.

1.Make desired changes and adjustments to the machine for drilling or milling.

2.Set an appropriate speed for drilling or milling the workpiece.

Use the Speed Control Knob (134) to adjust the Spindle speed. For cutting metal, the speed range should be between 200 to 2500 RPM. Faster speeds are generally used when milling softer materials and drilling small holes; And slower speeds for milling harder material and drilling larger holes.

3.Using a fixture (not supplied) mount the workpiece to the Working Table (19).

4.Adjust the Limit Block (65) height.

This will enable Spindle movement to the desired cut, and disable an over cut which could damage the workpiece fixture or Work Table.

5.Adjust the Working Table Longitudinal Feed Hand Wheel (X-Axis) and the Cross Feed (Y-Axis) Hand Wheel (5) into position for milling or drilling.

One step turn of the Hand Wheel moves the Work Table 0.03 mm; one complete turn moves it 1.5 mm.

6.Remove any tools or obstacles from in and around the Work Table.

7.Turn the machine on. Lift the Emergency Stop Switch (137) cover, and pull button out.

8.If necessary, adjust the Spindle speed with the Speed Control Knob (134).

9.Begin milling or drilling.

Use the Operating Lever (58) to make large adjustments to the Spindle height. For fine adjustments, use the Fine Feeding Wheel (93). Refer to the ruler on the Vertical Support to determine drilling or milling depth. Caution: Keep hands and fingers clear of the working table and workpiece while the machine is in operation.

SKU 44991

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Contents 44991 For technical questions and replacement parts, please callSave This Manual SpecificationsSafety Warnings and Precautions Read all instructions before using this toolPage Unpacking InstallationREV 11/02 Operation AssemblyRemoval of the Taper Shank Cutter Installation of the Taper Shank CutterTravel Adjustment Checks before OperationBasic Drilling and Milling Procedure Adjusting the Vertical Support AnglePeriodic General Maintenance MaintenanceLubrication Requirements REV 03/05 Parts ListWith Longitudinal Y Axis and Cross X Axis Assembly Drawing Vertical Z Axis Assembly Drawing Spindle and Gear Box Assembly Drawing