Advertisement
Spindle
D
r
L
i
A_
_
I
I
4
3
2
Motor
Z
Y
X
W
U
Figure 5 - Spindle Speed Chart
Spindle RPM
Belt Location
120
A1-4Z
190
B2-4Z
230
A1-3Y
285
C3-4Z
370
B2-3Y
440
A1-2X
770
D4-3Y
1040
C3-2X
1220
B2-1W
1450
D4-2X
1800
C3-1W
2500
D4-1W
SPINDLE
OPERATION
Refer to Figures 7 and 8.
Craftsman mill drill is equipped with spindle fine feed
handwheel and spindle depth Iockdown handle.
Engage fine feed handwheel (Figure 7, Key No. 2) by
rotating pinion knob clockwise (Figure 7, Key No. 17)
until tight. Disengage fine feed by loosening pinion
knob.Spindle depth can be locked into position by tight-
ening quill lock handle (Figure 8, Key No. 23). Bring
spindle down to desired position and tighten quill lock
handle to hold spindle position.
DEPTH STOP
Refer to Figures 7 and 8.
Repeated operations where depth of cut is consistent
are made easier by using depth scale (Figure 7, Key
No. 47) and depth setting knob (Figure 8, Key No. 9).
Depth of cut is shown on depth scale and indicated by
depth indicator (Figure 7, Key No. 48).
Depth of cut is set by rotating depth setting knob until
desired depth is obtained.
HANDWHEEL
SCALES
Refer to Figure 9.
The cross feed handwheel and right-hand longitudinal
handwheel are equipped with graduated collars.
One full rotation of handwheel moves table .100".
Handwheel scales are graduated in .001"
Scales are used when precise movement of table is
required.
Scales can be zeroed by loosening dial screw (Key No.
16) and rotating lead screw dial (Key No. 13) until zero
marks are aligned.
Tighten dial screw.
TABLE STOP BLOCKS
Refer to Figure 9.
Longitudinal travel can be limited to make repeated
operations easier by using the table stop blocks (Key
No. 4o).
Table stop blocks are positioned to contact table stop
bracket (Key No. 26) limiting table travel.
Adjust stop blocks by loosening socket head bolts (Key
No. 39) and moving stop blocks to desired position.
Secure socket head bolts.
TABLE LOCKS
Refer to Figure 8.
Mill drill table can be locked into position using table
lock handles (Key No. 27).
Longitudinal position is secured by tightening lock han-
dles on front of saddle.
Cross feed position is secured by tightening lock han-
dles on right side of saddle.
REMOVE
ARBOR
Loosen draw bar with wrench and remove arbor from
spindle.
WARNING:
Make certain that unit is disconnected
from power source before attempting to service or
remove any component.
Refer to Figures 6, 7, 8 and 9.
*
Keep all moving parts and surfaces clean of dirt,
metal chips, etc. Keep a light coating of oil on all
exposed surfaces, including table top and slots, all
dovetail way surfaces, lead screws, rack and column.
.
Replace worn V-belts.
.
Check electrical connections and replace any worn
or frayed wires or line cords.
.
Replace worn way cover.
GIB ADJUSTMENT
Refer to Figures 6 and 9.
Craftsman mill drill is equipped with adjustable gibs
(See Figure 6) on longitudinal and cross feed that elimi-
nate excess play in table as dovetail ways wear over
time.
7
Advertisement
