Service manual

4
The 136SC-150 is an air operated, hydraulically controlled tool
that automatically clamps to the material, drills and countersinks
close tolerance holes in one operation. This drill will produce high
quality holes in aluminum, steel, titanium and petroleum hybrid
materials primarily found in the aircraft/aerospace industries.
This drill motor has been designed using state-of-the-art technol-
ogy that provides maximum power, minimum weight and the
highest degree of accuracy for demanding hole preparation
requirements.
Technical Data
Feed Stroke: Feed stroke of the 136SC-150 is 1.50 inches to drill
and countersink in 1.3125 inch stacked material. The feed stroke
is unaffected by the collet stroke.
Collet Stroke: The 136SC-150 will clamp throughout its .56
inch stroke. Collet stroke is unaffected by feed stroke.
Spindle Adjustment: The spindle adjustment of .312 inch
allows for drill length variations. See Spindle Adjustment informa-
tion.
Countersink Depth Control: A micrometer adjustment pro-
vides for countersink stop repeatability within .001 inch.
Cutter Sizes: The 136SC-150 will accommodate .312 diameter
drills without countersink and .250 diameter drills with .505
countersink diameter.
Feed Rate: An adjustable drill feed rate mechanism enables
the 136SC-150 to drill from 5 seconds per inch to 1 minute per
inch. See Feed Rate Adjustment information.
Cutter to Collet Spacing: The cutter to collet distance is adjust-
able between .500 inch minimum to 2.75 inch maximum.
Coolant: The 136SC-150 has a drill point coolant port in the
pressure foot. A coolant mist lubricator is available (See Accesso-
ries).
Air Motor: The air motor develops .88 horsepower when
supplied with air at 90 p.s.i.
Air Consumption: Air consumption of the 136SC-150 is 35
c.f.m. at 90 p.s.i. dynamic.
Weight: Tool weight with the steel pressure foot is 8.0 pounds.
Spindle Speeds: Eight geared spindle speeds are available:
400, 950, 2100, 3100, 6000, 7800,11500, and 22500 RPM. Any
gear set can be used with the 136SC-150 tool.
Trigger Lock: A trigger lock is provided which allows the tool to
be locked in the “Operate” position. With the lock activated, the
tool will run through the clamp, feed and retract cycles, but it will
not unclamp or stop the motor until the trigger lock is manually
released.
Tool Start-Up
The 136SC-150 drill is shipped from the factory equipped to the
customer’s specifications: spindle RPM, spindle to accommodate
cutter type desired, pressure foot type, collet guide to accommo-
date collet desired and optional booster pump (if required).
After unpacking, examine the customer-specified equipment
on the tool to verify type and speed of components.
Attach air line to 3/8-18 NPT inlet bushing. If quick disconnect
fittings are used, 3/8 in. ID are minimum. The 136SC-150 drill
requires a supply of clean 90-100 PSI air. Air consumption is 35
CFM at 90 PSI. The use of the in-line lubricator will provide the
proper lubrication for the air motor and will significantly increase
the tool life expectancy.
Because O-rings are extensively used to seal systems within
the tool, the elimination of foreign particles and other contami-
nants will reduce the possibility of damage to these parts. Always
inspect O-rings for damage or wear and replace as required. The
use of silicone O-ring lubricant is strongly recommended during
reassembly. The addition of oil in the air line will also increase
motor and valve life as well as the life of the O-rings.
Introduction and General Information
WEIGHT
AIR CONSUMPTION
HORSE POWER
O/A LENGTH
STROKE
COLLET STROKE
COUNTERSINK
FEED RATE
SPINDLE SPEEDS
DRILLING THRUST
CLAMP FORCE
SPINDLE ADJUSTMENT
MAX. DRILL SIZES
COLLET FOOT SPACING
SPINDLE
COOLANT
8.0 LBS. MAX. W/ALUMINUM FOOT
35 C.F.M. @ 90 P.S.I. DYNAMIC
APPROX. .88 @ 90 P.S.I.
10.5 IN. MAX WITH SPINDLE ADJUST AT FULL EXTENSION
1.50 IN. (DRILL & C/SINK 1.31 IN. STACK)
.56 IN. (NO LOSS OF FEED STROKE)
COUNTERSINK STOP REPEATS WITHIN .001 IN.
MIN. 5 SEC. PER INCH, MAX 1 MIN. PER INCH
400, 950, 2100, 3100, 6000, 7800, 11,500 & 22,500 RPM
197 LBS. MAX. (UNREGULATED AIR)
325 LBS. START CLAMP FORCE (UNREGULATED AIR)
.312 IN. ADJUSTMENT TO ALLOW FOR DRILL LENGTH
VARIATIONS
.312 (NO C/SINK), .250(.505 C/SINK DIA.)
.500 IN. MIN.-2.75 IN. MAX.
.375 IN. DIA. W/1/4-28 THR'D FOR I.D.
THREAD TYPE DRILLS OR 1/4-28 MALE THD. DRILLS
AIR BLAST PORT & DRILL POINT PORT IN TEMPLATE STD.,
COOLANT MIST LUBRICATOR AVAILABLE.
136SC-150 DRILL MOTOR SPECIFICIATIONS