Deluxe Productivity Upgrade Package, HiTorque Bench Mill

The Spindle Brake provides a convenient method of locking the spindle freeing both hands to complete a tool change. A safety switch ensures that power to the motor is disabled when the Spindle Brake is engaged. This Spindle Brake features an integral flip-style locking fork which locks the mill’s spindle when engaged and does not require a separate locking device to be mounted and removed from the mill.

To operate, flip the Spindle Brake fork down over the spindle while the spindle is at rest. Then rotate the spindle by hand until the set screws in the Spindle Brake fork mesh with a spindle spline. Once the tool change is complete, lift the Spindle Brake fork up into the retracted position and you are ready to go.

The Quill Stop provides a quick and accurate way to set the quill depth of cut. It is great for drilling multiple holes to the same depth. The Quill Stop is also very handy in performing single or repeated chamfering of parts. To set up the chamfer the first time on a part, turn the mill off and simply lower the cutter to the top of the part, lock the fine feed knob, and back-off one full turn (turn the Button Nut clockwise as viewed from the top). Then start the mill and turn the Button Nut on the Quill Stop counter clockwise in small increments until the cutter contacts the part. Then continue turning the Button Nut counterclockwise and alternately lowering the quill until the desired chamfer is achieved.

The Quill Stop works equally well performing inside chamfers using typical chamfering mills, and outside chamfers using, for example, a hollow mill.

The Power Lift system for the Little Machine Shop 5500 mill functionally replaces the Z-Axis manual hand wheel that is used to raise and lower the mill head. Using the Power Lift system is really easy, just press the switch up or down and release, and you are done. It is much faster than using the hand wheel, and much easier on your shoulder.