Ingersoll-Rand 8246-D User Manual
OPERATOR’S MANUAL
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
Tool Products
IMPORTANT: READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING PRECAUTIONS RECOMMENDED LUBRICANTS
l
Keep hands and clothing away from rotating end of tool.
l
Wear suitable eye protection while operating tool.
0 Disconnect air supply from tool before removing/installing bit
or performing other maintenance procedures.
ROUTINE LUBRICATION REQUIREMENTS
Lack of or an excessive amount of lubrication will affect the performance and life of this tool. Use only recommended lubricants at
below time intervals:
EVERY 8 HOURS OF TOOL OPERATION
voir of recommended F.R.L. with spindle oil (29665).
EVERY 160 HOURS OF TOOL OPERATION
“EP” grease (33153), 1 to 2 strokes, thru grease fitting in gear
housing. NOTE: Spindle must be extended from outer sleeve sufficiently to expose grease fitting in gear housing. Gearing should
contain approximately 1/8 oz. (3.5 g) of grease.
AIR SUPPLY REQUIREMENTS
For maximum operating efficiency, the following air supply specifi-
cations should be maintained to this air tool:
l
AIR PRESSURE - 90 PSIG (6 bar)
l
AIR FILTRATION - 50 micron
. LUBRICATED AIR SUPPLY
l
HOSE SIZE - 5/16” (8 mm) I.D.
An ARO® model C28231-810 air line FILTER/REGULATOR/LUBRICATOR (F.R.L.) is recommended to maintain the above air
supply specifications.
The nose end of the outer sleeve (41) is provided with 1-7/16” -
18 L.H. threads [remove thread guard (47) for use] and a 1-7/16” x
1/2” long pilot diameter for fixture mounting. Foot and flange type
mounting brackets are available for tool mounting.
BANT-A-MATIC® SELF-FEED DRILLS
Models 8246-D( )-( )
OPERATING OR SERVICING THIS EQUIPMENT.
- Fill lubricator reser-
- Inject NLGI #1
MOUNTING
SECTION
MANUAL
M104
13
Released: 4-1-88
Revised: 12-l 2-94
Form:
After disassembly is complete, all parts, except sealed or shielded
bearings, should be washed with solvent. To relubricate parts, or
for routine lubrication, use the following recommended lubricants:
Where Used
Air Motor 29665
“O” Rings & Lip Seals 36460
Gears and Bearings
ARO Part #
Description
1 qt. Spindle Oil
4 oz. Stringy Lubricant
33153 5 lb. “EP” - NLGI #1 Grease
3266-2
SET-UP PROCEDURE
WARNING: Keep clear of rotating end of unit with hands and/or
clothing. Keep fingers/hands from being pinched between housing or valves and adjustment screws and/or trip bracket.
l
Loosen two screws (29) and remove cover (1).
0
Allow a minimum distance of 1/4” between the tap point of the
unit and the workpiece. This is necessary for the air motor to
start and reach free speed before the tap point touches the
workpiece.
l
Determine the TOTAL STROKE LENGTH the tap must travel
to perform the tapping operation -see illustration below.
a
Loosen jam nut (8) and turn adjustment screw “A” so the distance between the end of the screw and the stud (26) equals
the total stroke length.
l
Tighten jam nut (8).
0
Loosen jam nut (8) and turn adjustment screw “B” (valve inhead models only) so the distance between the end of the
screw and the button bleed valve (25) is slightly GREATER
than the distance set for adjustment screw “A”.
l
Start and let the unit advance until the adjustment screw “A”
makes contact with the stud (26).
l
Carefully, and be aware that the unit is going to retract, turn the
adjustment screw “B” until it depresses the button bleed valve
(25) enough to cause the unit to retract.
l
Tighten jam nut (8).
0
See “FEED RATE CONTROL VALVES”, page 2.
TOTAL STROKE LENGTH
I
I
1/4”MlNlMUM
-DESIRED TAP
PENETRATION
ADJUSTMENT SCREW “A”
For parts and service information, contact your local ARO distributor, or the Customer Service Dept. of the Ingersoll-Rand Dis-
tribution Center, White House, TN at PH: (615) 672-0321, FAX: (615) 672-0601.
ARO Tool Products
Ingersoll-Rand Company
1725 U.S. No. 1 North l P.O. Box 8000 l Southern Pines, NC 28388-8000
©1994 THE ARO CORPORATION. PRlNTED IN U.S.A.
PROFESSIONALTOOLS
FEED RATE CONTROL VALVES
REMOTE OPERATION
l Turn valve (23), marked “R” on top of housing, approximately 1-1/2
turns counterclockwise (open).
l Turn the other valve (23), marked “F” on top of housing, clock-
wise until closed (do not tighten too snugly)
l Start unit and slowly turn valve (23) marked “F” counterclockwise
(open) until the desired forward rate of feed IS reached.
l A final adjustment of the rate of return (retract) can be made with
the valve (23) marked “R” on housing.
MANUAL OPERATION
l Install button bleed valve (25) in either the “F” port located at top
of valve housing or the “F” port located at the rear of valve housing.
NOTE: Unused port must be plugged with pipe plug (24).
l Depress button bleed valve (25) marked “F” on valve housing.
The unit will start in the forward (advancing) mode and continue
to feed forward until the adjusting screw “B” has depressed bleed
valve (25) marked “R” to retract the unit. See set-up procedure.
l A manual emergency retract button bleed valve (25) can be in-
stalled in “R” port at top of valve housing if desired. This valve
can be used to immediately retract the unit in case of misaligned
part or other emergency. Valve not furnished.
RECOMMENDED POWER AIR INLET SYSTEM
Install a pressure bleed valve - ARO part number 9600 - in valve
port marked “F” at either the top or rear of valve housing
Connect pressure bleed valve - using 1/8” i.d. tubing - to a remote operated valve which, when actuated, feeds air pressure
to the pressure bleed valve. Pressure bleed valve will bleed the
air from “F” port of valve housing causing spool
valve
in housing
to shift to the forward feed position thus starting the forward stroke
of the unit.
Install a pressure bleed valve
-ARO
part number 9600- in valve
port marked “R” at the top of the valve housing and connect using 1/8” i.d. tubing- to 0 remote MANUALLY operated valve. This
valve is used as an emergency retract in case of o part misalignment or such only as the unit, when properly set-up and applied,
will automatically retract and return to the start position. See setup procedure.
Refer to page 3 for plumbing and schematic diagrams.
SPECIAL NOTE: The air inlet and remote ports of valve housing have
tapered pipe threads and should not require the use of thread sealants,
such as sealant tape or pipe joint compounds. Thread sealants, when
used improperly, can contaminate air passages and cause valve or
unit to malfunction.
Your ARO Self-feed tool is designed to deliver specific horsepower and thrust to achieve high rates at work. To assure the unit will develop this power, core
the power air inlet system is correctly sized to permit the proper rate of air flow. Shown is o system for a single tool Mot will supply correct delivery. IMPORTANT
rated when 90 P.S.I. is present AT THE TOOL DURING OPERATION.
Shown below is the some system In schematic form.
F = FILTER
R = REGULATOR
L = LUBRICATOR
F-R-L- MODEL C28221-810
If two or three
units
are to be installed, each unit should be supplied with a system like that shown below or use system like that above for each tool.
FILTER MODEL F25231-110
REGULATOR MODEL R27231-100
LUBRICATOR MODEL L26221-110
must be token that
- the tool Is power
2
SET-UP PROCEDURE WITH OPTIONAL
HYDRAULIC CHECK
M104
13
Assemble hydraulic check to mounting bracket and assemble
mounting bracket to tool using washers (Y14-8) and cap screws
Measure distance from tap point to work piece - distance “Y”.
Distance “X” between hydraulic check plunger and trip bracket
must be less than distance “Y” to prevent damage to tap point
when it approaches the work piece.
Loosen the cap screws (Y154-48) and position hydraulic check
to obtain correct setting for distance “X”.
Tighten cap screws (Y154-48) securely before operating unit,
Increase the air flow thru the Feed Control Valve marked “F” by
Y
opening two (2) full turns from closed position, This will allow tap
to advance rapidly until the trip bracket contacts plunger of hydraul-
ic check.
l
The Hydraulic Feed Rate Adjustment is located at the nameplate
end of the Hydraulic Check. Rotate extended spindle until the slot
on the spindle is located midway between the highest and the
lowest settings.
l
Start tap unit and the tap will advance at a rapid rate until the
trip bracket contacts plunger of hydraulic check,
l
Slowly rotate the Hydraulic Feed Rate counterclockwise for faster
feed rate or clockwise for slower feed rate.
ADJUSTMENT SCREW
BASIC REMOTE CONTROL FOR START
AND EMERGENCY RETRACT FUNCTIONS
3-WAY PALM BUTTON VALVE MODEL
461-3 WITH GUARD 20975 (RECESSED
GREEN BUTTON). INSTANT TUBE CONNECTIONS
“OUT” PORT
. PACKAGED 10 TO A BOX
REMOTE OPERATION
Remote operation of the unit may be achieved by connecting a 3-way valve to the remote start and/or remote retract ports, as shown above.
TO START - depress the remote button momentarily. The unit will advance the drill to a preset depth and automatically retract to the initial position whereupon the unit will stop.
EMERGENCY RETRACT - depress the emergency button momentarily. This signal to the unit will shift the built-in pressure operated valve, commanding the unit to retract immediately
to the initial position whereupon the unit will stop.
NOTE: MANUAL START and EMERGENCY RETRACT buttons on the tool are fully operational even when remote control is used, The manually operated buttons can be used when
set-up IS required.
Shown below is the some system in schematic form.
AND SPRING RETURN
3-WAY PALM BUTTON VALVE (MODEL 461-2).
RED BUTTON WITHOUT GUARD. INSTANT TUBE
CONNECTIONS AND SPRING RETURN
37601 TORQUE ARM ASS’Y
'37625
42920
42921
42135
44790
44797
42141
42145
42143
42144
42142
42599
42130
44804
44798
44802
44791
44795
44799
44801
44800
44794
1
HOUSING
CLUTCH SPRING, SMALL (3)
CLUTCH SPRING, LARGE (3)
CLUTCH ADJUSTMENT CAP
SPRING
CLUTCH SLEEVE
SPRING CUP DRIVER
CLUTCH DRIVER
CLUTCH PLATE
CLUTCH PLATE
CLUTCH PLATE
DRIVE PINS (3)
BEARING
SLEEVE BUSHING
REVERSING DRIVER
SPACER
GEAR CARRIER BEARING
SPRING
RING GEAR
PIN (3)
REVERSING SLEEVE
GEAR WASHER
RETAINING RING
THRUST WASHER
STOP ARM
RETAINING RING
SPRING
NUT
SPINDLE
GEAR CARRIER
KEY
SCREW (2)
JAW
COLLET
CHUCK NUT
INCLUDED WITH 42124-1 HOUSING
42123-1 TAPMATIC ATTACHMENT AND TORQUE ARM ASS’Y
-SHOWN
WRENCH
40491 SPANNER WRENCH
Y106-1
WRENCH
ALLEN WRENCH
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