Sherline 5000 Mill General Manual

"Y" axis until snug. Replace the locking plate and tighten the pan head screw. With the
anti-backlash nuts properly adjusted, the lead screws will turn smoothly and have no
more than the proper .003" to .005" of backlash.
FIGURE 12-Backlash Adjustment. NOTE: A new lock now uses a star gear rather than
the pointer to locate the anti-backlash nut, and a button head socket screw locks it in
place. This system is easier to use, but the function is essentially the same. (The hole
centers are different, which means the star gear cannot be used to replace the pointer on
older models.)
Handwheel adjustment
The handwheels are secured to their corresponding leadscrew shafts by a small set screw
in the side of the handwheel base. Check them periodically to make sure they have not
been loosened by vibration. On the "zero" adjustable handwheels, you must first release
the rotating collar by loosening the locking wheel. Then rotate the collar until you can see
the set screw through the small hole in the side of the collar and adjust the screw as
necessary.
If excessive backlash develops at the handwheel and thrust collar junctions, adjust by first
loosening the handwheel set screw. Index (rotate) the handwheel so the set screw tightens
on a different part of the shaft. (If you don't, it may tend to keep picking up the previous
tightening indentation and returning to the same spot.) Push the handwheel in tightly
while holding the mill saddle and retighten the handwheel set screw.
Movement of the handwheels
Turning the appropriate handwheel moves the saddle, crosslide and tailstock spindle. For
the inch version, one complete turn of the handwheel gives a movement of .050". For the
metric model, one complete turn of the handwheel gives a movement of 1mm.
Handwheels are calibrated in .001" (1/1000") for inch models and .01mm (1/100mm) for