Wilton 1230 Service manual

Part No. 9078241
Revision A
Radial Arm Drill Press
Model 1230
Operating instructions and parts manual

3
Table of Contents
Cover Page ........................................................................................................................ 1
General Specifications ...................................................................................................... 4
Operating Precautions ...................................................................................................... 5
Operating Instructions ....................................................................................................... 7
Lubrication and Coolant ................................................................................................ 13
Machine Set-up ............................................................................................................... 14
Wiring Diagram................................................................................................................. 16
Replacement Parts .......................................................................................................... 17

4
Columndiameter 1113/16 in. (295mm)
Columnto spindle centerdistance,max. 46 in. (1150mm)
Columnto spindle centerdistance, min. 13 3/8in. (334mm)
Spindletravel alongarm, total 35 in.(875mm)
Base surface to spindle end, max. (no tooling) 54 in. (1350.0mm)
Base surface to spindle end, min. (no tooling) 19 3/8in.(484mm)
Quill(spindle) travel 9 7/8 in. (247mm)
Armmovementrange on supportcolumn 345/8in. (866mm)
Boxtabledimensions 27 7/8 x 20 1/2 x 16 1/2 in.
(697x513x413mm)
Basedimension 67 3/4 x 25 15/16 x 6 1/2 in.
(1694x648x163mm)
Spindletaper Morse #4
Spindlespeeds, RPM 45-1550
Feed rates (distance/revolution) 0.002, 0.004, 0.006 in/rev
(0.005,0.010,0.030 mm/rev)
Mainmotor HP 5
ArmraisingmotorHP 1
Clampingmotor 1
Coolantpumpmotor HP 1/8
Machineheight (floor tomax.) 109 1/2 in. (2,738mm)
Netweight (approx) 4,620 lb. (2,100 kg)
Generalspecifications
The Wilton Model 1230 is a powerful and
versatile radial arm drill press. The drill head is
mounted on an arm and can move along the arm to
position the spindle over the work piece. The arm,
itself, can be rotated on its support column to allow
centering the spindle over the work piece.
Drilling can be performed manually or with
power assistance. In addition, parameters of RPM,
power feed rate and drilling depth can be pre-set by
theoperator, usingcontrolsconvenientlypositioned
on the drill head, to allow any hole to be drilled using
power feed.
A precision machined box table is delivered with
theModel 1230 toallow convenientpositioningand
clamping of smaller work pieces. The box table may
beremovedfrom the base to allowlargerworkpieces
to be positioned and clamped on the precision
machined base, itself.
Drilling Tapping Boring
Steel 21/8 in. (53mm) 11/8 in. (28mm) 33/8 in. (84mm)
Castiron 21/2 in. (63mm) 13/4 in. (44mm) 43/4 in. (119mm)
Machining capacities
Overall dimensions and specifications

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-Always shut off the machine when not in use.
When servicing machine:
-Always unplug machine from electrical power while
servicing.
-Always follow instructions in operators and parts
manual when changing accessory tools or parts.
-Nevermodify the machine withoutconsulting Wilton
Corporation.
You — the stationary power tool user — hold the key
to safety.
Readand follow thesesimplerules for bestresults
and full benefits from your machine. Used properly,
Wilton’s machinery is among the best in design and
safety. However, any machine used improperly can
be rendered inefficient and unsafe. It is absolutely
mandatory that those who use our products be
properly trained in how to use them correctly. They
shouldreadand understand theOperatorsand Parts
Manualas well as alllabels affixed to themachine.
Failure in following all of these warnings can cause
serious injuries.
- Misuse of this machine can cause serious injury.
- For safety, machine must be set up, used and
serviced properly.
- Read, understand and follow instructions in the
operator’s and parts manual which was shipped with
your machine.
When setting up machine:
- Always avoid using machine in damp or poorly
lightedwork areas.
- Always be sure machine is securely anchored to
the floor.
- Always keep machine guards in place.
- Always put start switch in “OFF” position before
plugging in machine.
When using machine:
-Neveroperate with machineguardsmissing.
-Always wear safety glasses with side shields (See
ANSIZ87.1)
-Neverwearloose clothing or jewelry.
-Never overreach — you may slip and fall into the
machine.
-Never leave machine running while you are away
from it.
1. Always wear protective eye wear when
operating machinery. Eye wear shall be impact
resistant,protective safety glasseswith side shields
which comply with ANSI Z87.1 specifications. Use of
eye wear which does not comply with ANSI Z87.1
specifications could result in severe injury from
breakage of eye protection.
2. Wear proper apparel. No loose clothing or
jewelry which can get caught in moving parts.
Rubbersoledfootwear is recommended for best
footing.
3. Do not overreach. Failure to maintain
proper working position can cause you to fall into the
machine or cause your clothing to get caught —
pulling you into the machine.
4. Keep guards in place and in proper working
order. Do not operate the machine with guards
removed.
5. Avoid dangerous working environments. Do
not use stationary machine tools in wet or damp
locations. Keep work areas clean and well lit.
Special electrics should be used when working on
flammablematerials.
6. Avoid accidental starts by being sure the start
switch is “OFF” before plugging in the machine.
7.Never leave themachinerunning while
unattended. Machine shall be shut off whenever it is
not in operation.
8. Disconnect electrical power before servicing.
Whenever changing accessories or general mainte-
nance is done on the machine, electrical power to the
machine must be disconnected before work is done.
9. Maintain all machine tools with care. Follow
all maintenance instructions for lubricating and the
changing of accessories. No attempt shall be made
to modify or have makeshift repairs done to the
machine. This not only voids the warranty but also
renders the machine unsafe.
10. Machinery must be anchored to the floor.
11. Secure work. Use clamps or a vise to hold
work, when practical. It is safer than using your
hands and it frees both hands to operate the ma-
chine.
12. Never brush away chips while the machine
is in operation.
13. Keep work area clean. Cluttered areas
inviteaccidents.
14.Remove adjusting keysandwrenches
before turning machine on.
15. Use the right tool. Don’t force a tool or
Machinery general safety warnings

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240volt lines 120voltlines
0-50 feet No. 14 No. 14
50-100 feet No. 14 No. 12
Over 100 feet No. 12 No. 8
Conductorlength AWG (American wire gauge) number
attachment to do a job it was not designed for.
16. Use only recommended accessories and
followmanufacturers instructions pertainingto them.
17. Keep hands in sight and clear of all moving
parts and cutting surfaces.
18. All visitors should be kept at a safe distance
from the work area. Make workshop completely safe
by using padlocks, master switches, or by removing
starter keys.
19. Know the tool you are using — its applica-
tion,limitations, and potentialhazards.
Wire sizes
Caution: for circuits which are far away from
the electrical service box, the wire size must be
increased in order to deliver ample voltage to the
motor. To minimize powerlosses and to prevent
motor overheating and burnout, the use of wire sizes
for branch circuits or electrical extension cords
according to the following table is recommended:
General Electrical Cautions
This machine should be grounded in accor-
dance with the National Electrical Code and local
codes and ordinances. This work should be done by
a qualified electrician. The machine should be
grounded to protect the user from electrical shock.
Safety instructions on drill presses
1. All work shall be secured using either clamps
or a vise to the drill press table. It is unsafe to use
your hands to hold any workpiece being drilled.
2. Drill press head and table shall be securely
locked to the column before operating the drill press.
This must always be checked prior to starting the
machine.
3. Always use the correct tooling. Tooling shall
always be maintained and properly sharpened. All
tooling must be run at the proper speeds and feeds
as they apply to the job. Use only recommended
accessories and follow those manufacturers instruc-
tions pertaining to them. Tooling shall not be forced
in to any workpiece but fed according to the proper
specifications. Failure to follow these instructions will
not only ruin the tooling as well as the machine, but
can cause serious injury.
4. Never brush away any chips while the
machine is in operation. All clean up should be done
when the machine is stopped.
5. Keep hands in sight. Do not put hands or
fingers around, on, or below any rotating cutting
tools. Leathersafety gloves should beused when
handling any sharp objects or cutting tools. See
Figure A.
6. Always wear protective eye wear when
operating, servicing or adjusting machinery.
Eyewearshallbe impact resistant,protectivesafety
glasseswith side shields complyingwith ANSI Z87.1
specifications. Use of eye wear which does not
comply with ANSI Z87.1 specifications could result in
severe injury from breakage of eye protection. See
figure B.
7. When drilling in material which causes dust,
a dust mask shall be work. See Figure C.
8. Avoid contact with coolant, especially
guarding the eyes.
9. Non-slip footwear and safety shoes are
recommended. See figure D.
12. Wear ear protectors (plugs or muffs) during
extended periods of operation. See figure E.

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Operating Instructions
Clamping workpieces to the machine
Both the box table and the base surface are
slottedtoaccept a suitably sizedT-slotclamp.
Before begining any work on the drill press, anchor
the work piece, and the box table, too, if used, to be
certainthe workpiece and/or boxtable will not move
when the drill, tap or boring tool enters the
workpiece.
Caution
Failure to properly anchor the workpiece
and box table could result in damage to the
machine, damage to the workpiece, and worse --
severe injury and possibly death to the machine
operator. Never work on the drill press without
clampingthe materials usingaT-slot system set-
up.
Figure1: Drill pressnomenclature

8
Inserting tooling
The Model 1230 uses a #4 Morse taper in the
spindle to secure tooling. Any drill, milling cutter, or
tool holder with a #4MT can be inserted into the quill.
Caution
The first step in removing or inserting any
tooling is to be absolutely certain the machine
cannot be accidentally started during the insertion
or removal operation. The only way to be certain
of this fact is to disconnect power to the machine
using the service box cut-out switch. The service
box (typically the one holding the fuses or circuit
breakers will have been installed by the electrician
who connected the machine to its service branch)
should have a cut-out switch or lever on the outside
of the box. Put the switch or lever in the OFF
position before inserting or removing tooling.
To insert tooling:
1. Observe the caution, above, and be certain all
power to the machine has been disconnected.
2. Be certain the spindle is clean, free from oil, and
ready to accept the shank of any tooling.
3. Check the shank of the tooling to be certain the
tooling is free from dirt, nicks or burrs. If any nicks
or burrs are discovered, file and/or stone the shank
untilthe shank issmooth.
4. Be certain the quill is in the full UP position.
5. Slide the shank of the tooling into the spindle until
itseats.
6. Use a soft-faced mallet (such as lead, plastic,
brass, etc.) to give the tooling a sharp tap on its tip.
This will secure the tooling firmly in the taper.
7. Re-establish power to the machine and the drill is
ready to use.
To remove tooling:
1. Observe the caution above and be certain all
electrical power to the drill press has been cut off.
2. Place a wood block under the tooling in the
spindle to prevent it from being damaged, should it
fall out of the quill during the removal process.
3. Lower the quill by using the feed levers until the
toolremoval windowis exposed.
4. Using a suitable tapered drift, insert the drift in
theremoval window,above the tipof the tooling
shank.
5. Using leather gloves to prevent cuts from the
tooling, hold the tooling with you hand to prevent it
from falling from the quill.
6. With your free hand, using a hammer, tap the
tapered drift and the tooling will loosen from the taper
and can be removed. The spindle is now ready for
the insertion of other tooling with a #4 MT.
Positioning the tooling over the
workpiece.
After the workpiece has been clamped to the
base or table you can position the tooling over the
workpiece by doing any or all of the following:
1. Adjusting the height of the arm on the support
column.
2. Moving the drill head along the arm.
3. Rotating the column upon which the arm and head
areattached.
Unlocking the arm and column
mechanisms
A motorized locking system is used to lock the
head to the arm, the arm to the column, and the
columnto the base.
The lock and unlock buttons which control the
locks are located on the right-hand side of the drill
head. When you push UNLOCK, all of the locks are
unlocked. When you push LOCK, all of the locks are
locked.
Caution
Always be certain the locks are engaged before
using the drill press. Pull on the arm handle and
try to rotate the head locating wheel before
pushingthespindle ON button. Failuretohave
all locks locked may result in damage to tooling,
damage to the work piece, and possible injury to
theoperator.
Raising and lowering the radial arm
1. Power to the drill press must be ON -- then release
the machine locks by pushing the UNLOCK push
button.
2. Use the control lever -- push it upward or down-
ward as required -- (see Fig. 3) to raise or lower the
arm to the required height. See also, Using the
control lever .
3. When the arm is at the required height and if no
otheradjustments to spindlelocationare required,
push the LOCK push button to re-lock all machine
locks.
To move the drill head along the arm
1. Power to the drill press must be ON -- then release
the machine locks by pushing the UNLOCK push
button.
2. Using the wheel in the center of the drill head, turn
the wheel to move the drill head along the arm. (See
Fig. 1.)
3. When the drill head is at the desired position on
the arm and if no other adjustments to spindle location
are required, push the LOCK push button to re-lock all
machinelocks.

9
on LOW or HI speed. There is a chart on the front of
the drill head which shows you the spindle speeds
availableand the gear changelever and motor switch
values required to select each speed. See Fig. 1.
On the gear change table you will also find the
recommended drill sizes for the various speeds which
areselectable. THESE RECOMMENDATIONSARE
ONLY APPROXIMATE. With the wide variety of drill
types and coatings available, the variety of cutting
fluids which might be used, and the even wider
variety of work piece materials which you might be
machining -- you need to consult with your tooling,
coolant and/or work piece suppliers to determine the
best spindle speed to use for any specific drilling
operation.
CAUTION
NEVER swing the drill press arm using the
support column unless you are absolutely certain
the drill press base is firmly attached to the shop
floor. You can tell if the base is bolted to the floor
by checking the mounting pads at the four corners
of the base. There should be a securing bolt
througheach mounting pad.
If the arm is moved off of its position directly
above the base and the base is not bolted to the
floor, THE DRILL MAY TIP OVER AND CAUSE
SERIOUSINJURYOR DEATHTOTHE DRILL
PRESSOPERATOR(YOU!!) and willcertainly
result in serious damage to the drill press, itself.
Don't take chances. Always look for bolts at the
mounting pads before swinging the drill press arm.
Setting spindle speed
Spindle speeds are established using the gear
change levers on the upper right-hand side of the drill
head. (See Fig. 1.) The shorter of the two levers
operatesa two-speed mechanismwhich puts the
gearbox in either high gear or low gear. There is a
"HI/LOW" readout on the upper left hand side of the
drill head which tells you which speed range is
selected.
The longer gear change lever operates a three
speedgearbox mechanism. The lowestgearand
spindle speed is selected by pushing the lever away
from you -- that is, by rotating the change shaft
counterclockwise. The highest gear and spindle
speed is selected by pulling the lever toward you --
rotating the shaft clockwise. There is a detent in the
middleofthe lever travel to tellyouwhen the lever is
in the intermediate gear position.
This gearbox set-up gives you a total of six
spindle speeds which may be selected. The two-
speed spindle drive motor, therefore, increases the
number of available spindle speeds to 12. The
specific spindle speed selected clearly depends on
the position of both gear change levers and whether
the motor switch on the top front of the drill head is
Caution
Do not try to change gears while the spindle
is turning. This may cause serious damage to the
spindledrive system.
Allowthe spindle tocometo a completestop
before attempting to change gears. If the gear
change lever you want to move does not slip
easily into the new position you require, jog the
motor for a second using the control lever. Then
allow the spindle to come to a stop again before
attempting to change gears, again. Repeat this
jogging process, as necessary, until the gears
match up properly for changing.
Setting feed rate and depth of cut
TheModel 1230 haslimitswitches on thequill
which cuts off electric power to the drive motor when
the quill has reached either the upper or lower limit of
itstravel. Thissystem is designedtoprevent gearbox
damage if the power feed mechanism is engaged --
damage which would occur if the quill were to bottom
out against the upper or lower limit of quill travel. In
the event of failure of either limit switch there is also a
safety clutch mechanism which will slip when the
limits of travel are reached.
However,whileyou are abletouse virtually the
full travel of the quill for drilling or other operations,
the drill press operator typically sets both the rate of
feed -- travel-per-revolution of the spindle -- and the
depth of cut -- that is, the total distance the quill
moves to make the required depth of cut.
These two operations are described, here:
Setting feed rate
The feed rate is set using the knob and dial on
the front of the drill head. See Fig. 1. The knob on
the dial can be rotated to select any of three different
Moving the arm on the support column
1. Power to the drill press must be ON -- then
release the machine locks by pushing the UNLOCK
pushbutton.
2. Use the handle at the end of the arm (see Fig. 1)
to move the column (and, therefore, to swing the arm)
as necessary to the required spindle position.
3. When the spindle is positioned correctly and no
otheradjustments are quired, pushthe LOCK push
button to re-lock all machine locks.

10
pushed inward -- on pivots which are in the feed lever
hub. When the feed levers are pushed toward the
drill head, the power feed mechanism is disengaged.
When the feed levers are pulled outward, the power
feed system is engaged. In the power feed position
(outward)the quill andspindle will bedriven EITHER
until they reach the limit of travel and the limit
switches cut off power -- OR until the trip mechanism
disengagesthe power feed, automatically-- OR until
the drill press operator pushes the feed levers into the
disengagedposition.
To set the depth of cut
1. Unlock lever A -- See Fig. 2.
2. Use the feed levers to lower the drill until it touches
the work piece.
3. Rotate the dial D until the rivet on the dial -- C -- is
at the feed depth required on the scale on graduated
dial B.
4. Lock lever A.
5. Pull the feed levers out to engage the power feed
clutch.
Note: Because the ring for Dial B makes one
rotation before contacting the mechanical trip dog,
you are limited to 4 inches (100mm) of travel during
any power feed operation. If you need to make
deeper holes you will need to do the machining in
steps.
feed rates, plus a neutral position where the power
feed does not operate on the quill.
Itisrecommended that when doingoperations
which do not require power feed that the dial be set to
the neutral position. This minimizes any wear on the
powerfeed mechanism.
The feed rate selected is indicated by a pair of
rivet heads on the edge of the rate setting dial. These
values are indicated on the far outer edge of the
readout.
Clearly, whenever the indicator rivets are at an
"N" position, no feed or "neutral" has been selected.
Any of the three feed rates are available for
selection using any of the spindle speeds available.
There will be a recommended feed rate for any
drilling or boring operation, and this rate must be
determinedbyconsulting appropriate machining
handbooks or by consulting with your tooling, coolant
and work piece suppliers.
Setting depth of cut using the power
feed system
There is a mechanism for engaging the power
feed and there is also a mechanism (a "trip mecha-
nism) which can be set to disengage the power feed
when a pre-set depth has been reached.
The feed levers can be pulled outward -- or
Figure 2: Power feed controls