AMMCO 7000 Disc Rotor Lathe - Manual (Page 16)

Machining
8. Recheck the setting of the depth-of-cut collars which were
on zero. Move the tool bits inward until they just contact the
faces of the rotor. Reset the collars if necessary.
9. Turn the cross feed handwheel clockwise until the tool bits
are near the rotor hub, Fig. B 18. Start the lathe. Turn both tool
bit controls to the desired depth-of-cut and lock them in posi-
tion.
Note: Either rough or finish cuts may be taken to resurface a
rotor. Generally, finish cuts should be .004" (.10 mm) to .006"
(.15 mm). Very shallow cuts [less than .004" (.10 mm)] tend to
reduce tool bit life because heat won’t transfer to the rotor effi-
ciently.
Move the cross feed speed control knob to the fast position for
roughing cuts.
10. Now engage the automatic cross feed (by moving the
knob), Fig. 19. When the cross feed has moved the cutting tools
all the way across the face of the rotor, the feed will shut off
automatically.
Brake Lathes
10 • AMMCO 7000 Brake Lathes
Figure B18
Figure B19