TM 5-6675-328-14
5-2.3 Equipment Data.
Maximum Collet Diameter
0.3150 in. (8.0 mm)
Bed Length
13 in. (33 cm)
Distance Between Centers
3-1/2 in. (8.9 cm) Max
Tailstock Spindle Travel
1-1/2 in. (3.1 cm)
Operating Speed Range
0-4000 rpm
Horsepower Rating
1/8 hp (93 W)
Power Requirements
120 V, 60 Hz, 1 amp,
Single-Phase
5-3. TECHNICAL PRINCIPLES OF OPERATION. The function of the instrument lathe is to perform various precision
machine shop operations. The lathe consists of:
5-3.1 Headstock. Mounts work-holding accessories and acts as the work carrier of the lathe. It consists of:
SPINDLE. A hollow, bearing-mounted shaft that supports the work-holding assessories.
DRAWBAR. Engages the threaded end of the work-holding device. When rotated to the right, the work-holding device is
drawn tight into the spindle.
SPINDLE LOCK. A plunger that engages the locking collar on the spindle to prevent the spindle from rotating while
removing or installing accessories.
5-3
