Eraser K8A User manual

Model K8A Wire Stripper
Please Read Before Operating Unit
Operating Manual
Please Call for Service or Spare Parts
The Eraser Company, Inc.
PO Box 4961
Syracuse, NY 13221, USA
Phone: [phone]
Fax: [phone]
Website: www.eraser.com
E-mail: [e-mail]

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Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • [e-mail] • www.eraser.com • Fax [phone]
ORDERING INFORMATION
Unit
AR1641 (K8A) .......................... Air operated stripper,
120V 60Hz, 90 PSI
Blade Selection for Four Blade Head
For all extruded type insulations:
IR0318.......................... Flat front blades (set of four)
for 38-8 AWG (0.10-3.25mmø) wires or up to
3/8” (9.5mmø) diameter over insulation
Use only for thick or rubbery insulations:
Machine must be used in counter clockwise rotation.
For lm and magnet wires (all sets of four):
IR0319.........Wire sizes 11-15 AWG (2.31-1.45mmø)
IR0321.........Wire sizes 16-20 AWG (1.30-0.81mmø)
IR0323.........Wire sizes 25-28 AWG (0.46-0.33mmø)
IR0324..............Special blades available for unusual
insulations and applications.
Material sample required for sizing.
ROTARY BLADE STRIPPER FOR
EXTRUDED OR MAGNET WIRE
OPTIONAL PARTS
PR0139............................................. Spare drive belt
PR0137.... Replacement blade opening garter spring
PG0291 ...................... Replacement blade pivot pins
PR0689............ Replacement plexiglass blade guard
For a free application evaluation, send 3 - 5 feet of
wire or cable along with stripping specications
to our Customer Service Department.
SPECIFICATIONS
Model - K8A
Wire Size:
Extruded Wires and Built-Up Insulations... 38-8 AWG
(0.10-3.25mmø) or up to 3/8" OD (9.5mmø)
Film Insulated and Magnet Wires............ 28-11 AWG
(0.33-2.31mmø)
Strip Lengths:
Extruded Wires and Built-Up Insulations... 0 to 1 3/8"
(0-34mm)
Film Insulated and Magnet Wires.............. 0 to 1 3/8"
(0-34mm)
Innite strip lengths possible if length stop is removed
Power .................... Air operated, 120V 60Hz, 90PSI
Decibel rating............................................... 60 dB(A)
Size:
Unit .... 14" x 9 7/8" x 9" (356mm x 251mm x 229mm)
Foot switch assembly K8A.................. 6" x 6" x 4 1/2"
(152mm x 152mm x 114mm)
Weight:
K8A................................................... 34lbs. (15.4 Kg)

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Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • [e-mail] • www.eraser.com • Fax [phone]
Model K8A Wire Stripper
IMPORTANT! DO NOT OPERATE MACHINE UN-
TIL YOU HAVE READ THOROUGHLY, AND UN-
DERSTAND COMPLETELY,ALL PRECAUTIONS,
INSTRUCTIONS AND INFORMATION ON THESE
PAGES. THIS MANUAL CONTAINS IMPORTANT
SAFETY AND OPERATING INSTRUCTIONS. IT
SHOULD BE RETAINED WITH THE MACHINE
FOR FUTURE REFERENCE.
SAFETY PRECAUTIONS - MECHANICAL
!DO NOT OPERATE UNIT WITHOUT GUARDS IN
PLACE OR WITH DAMAGED GUARDS.
!DO NOT DEFEAT ANY OF THE SAFETY FEA-
TURES.
!DO NOT PLACE FINGERS OR APPENDAGES
NEAR MOVING PARTS OR IN OR NEAR OPEN-
INGS IN GUARDS.
SAFETY PRECAUTIONS - ELECTRICAL
!ALWAYS UNPLUG UNITFROMPOWERSUPPLY
PRIOR TO ANY MAINTENANCE.
!DO NOT RUN UNIT WITH INCORRECT LINE
VOLTAGE.
! NEVER RUN MACHINE WITH DAMAGED OR
WORN POWER CORD.
! NEVER MODIFY THE PLUG PROVIDED. IF IT
WILL NOT FIT INTO THE OUTLET, HAVE THE
PROPER OUTLET INSTALLED BY A QUALIFIED
ELECTRICIAN.
GROUNDINGINSTRUCTIONS.Groundingprovides
a common return path for electric current to reduce
the risk of electric shock. This machine is supplied
with an electric cord with an equipment-grounding
conductor and a grounding plug. The plug must
be plugged into a matching outlet that is properly
installed and grounded in accordance with all local
codes and ordinances.
Improper connection of the equipment-grounding
conductor can result in a risk of electric shock.
Check with a licensed electrician if in doubt as to
whether the machine is properly grounded.
BLADE SPECIFICATION
Stripping blades are precisely made in sets of four to
insure correct stripping. Dimension is very important
when stripping magnet wires and is closely controlled.
Dimension varies for di󰀨erent magnet wire sizes to
insure tip of blade is correctly aligned to wire (i.e. when
tip is stripping insulation it will be parallel with the wire
conductor.)
BLADE SHARPENING SERVICE
We o󰀨er a blade re-grinding and re-tipping service.
Blades are precisely ground in matched sets on xtures
to insure correct stripping dimensions are maintained.
Re-grinding without the use of xtures will be detrimental
to the operation of the blades. Return blades in sets
of four to our factory for re-grinding.
OPERATION

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Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • [e-mail] • www.eraser.com • Fax [phone]
Model K8A Wire Stripper
Ensure proper alignment of moving parts. Check
for any binding of moving parts, breakage of parts,
and any other condition(s) that may a󰀨ect operation.
Any damaged part(s) should be properly repaired or
replaced prior to any continued use of the machine.
ONLY ALLOW TRAINED AND QUALIFIED PER-
SONNEL TO OPERATE UNIT. Always keep these
instructions within reach of the machine.
USE RECOMMENDED ACCESSORIES ONLY.
Consult this operating manual for recommended
accessories. Use only parts supplied by The Eraser
Company, Inc. Use of improper accessories will void
Eraser’s warranty and may increase risk of injury.
ALL REPAIRS SHOULD BE PERFORMED BY AN
ERASER COMPANY REPRESENTATIVE ONLY.
Unauthorized disassembly of machines will void
Eraser’s warranty.
WHEN USING MACHINERY, ALL SAFETY PRE-
CAUTIONS – INCLUDING, BUT NOT LIMITED
TO, THOSE LISTED ABOVE - SHOULD BE FOL-
LOWED TO REDUCE THE RISKS OF FIRE, ELEC-
TRIC SHOCK, AND PERSONAL INJURY, AND
DEATH.
IMPORTANT: NO LIABILITY WILL BE INCURRED
BY THE ERASER CO. FOR INJURY, DEATH, OR
PROPERTY DAMAGE CAUSED BY A PRODUCT
WHICH HAS BEEN SET UP, OPERATED,AND/OR
INSTALLEDCONTRARYTOERASER’SWRITTEN
OPERATING MANUAL, OR WHICH HAS BEEN
SUBJECTEDTOMISUSE,NEGLIGENCE,ORAC-
CIDENT, OR WHICH HAS BEEN REPAIRED OR
ALTEREDBYANYONEOTHERTHANTHEERAS-
ER COMPANY, OR WHICH HAS BEEN USED IN A
MANNER OR FOR A PURPOSE FOR WHICH THE
PRODUCT WAS NOT DESIGNED.
SAFETY FIRST - USE BEST PRACTICES
ALWAYS USE SAFETY GLASSES. Everyday eye-
glasses only have impact resistant lenses; they are
NOT safety glasses. Also use face or dust mask if
cutting operation
is dusty.
REMOVE ADJUSTING KEYS AND WRENCHES.
Form a habit of checking to see that keys and ad-
justing wrenches are removed from machine before
turning it on.
KEEP WORK AREA CLEAN. Cluttered areas and
benches invite accidents. Always leave at least 12”
(305 mm) of space around all sides and top of unit.
DON’T USE IN DANGEROUS ENVIRONMENTS.
Do not use or locate machine in high-humidity envi-
ronments, or expose to rain. Keep work areas well
lighted.
WEAR PROPER APPAREL. Do not wear loose
clothing, such as gloves, neckties, rings, bracelets,
necklaces or any other clothing or jewelry that might
get caught in moving parts. This is not an all-inclu-
sive list. Wear protective hair covering to contain
long hair. Non-slip footwear is recommended.
DON’T OVERREACH. Maintain proper footing and
balance at all times.
MAINTAIN BLADES WITH CARE. Keep blades
sharp and clean for optimal performance. Follow
instructions for lubricating and changing blades and
all accessories.
DISCONNECTMACHINEFROMPOWERSUPPLY.
Unplug the unit before servicing and when changing
accessories.
DO NOT EXCEED THE UNIT’S MAXIMUM MATE-
RIAL SPECIFICATIONS. Eraser’s warranty will be
null and void if machine has been used in any man-
ner that is contrary to these instructions.
CHECK FOR DAMAGED PARTS. Before continued
use of the machine, the guard and all moving parts
should be carefully inspected to ensure that nothing
is damaged.

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Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • [e-mail] • www.eraser.com • Fax [phone]
air supply. Mount the unit securely to the bench,
and place the electrical footswitch on the oor.
With the blades installed and the unit securely
mounted to the bench, blade adjustments may be
made for the wire to be stripped. The K8A contains
2 knurled adjusting wheels located on either side of
the yoke at the top of the unit. These are covered
by a guard. The front wheel controls how far the
blades are allowed to close, and the back wheel
controls how far they are allowed to open. On
the K8A, the blades are open, and the electrical
footswitch is activated to close them.
To adjust the wheels, rst remove the guard
covering them. Loosen the set screws in each
of the 2 adjusting wheels using the 5/64" allen
wrench. The 2 wheels should be adjusted so that
the blades open just far enough to admit the wire to
be stripped, and close just far enough to complete
the desired stripping, without nicking or damage
to the conductors. By restricting the movement of
the blades in this manner, they form their own wire
guide for the wire being stripped, and the operator
will nd insertion and withdrawal of the wire much
easier. Once these 2 wheels have been set in the
approximate desired location by eye, retighten the
set screws so the settings will not drift when the unit
is turned on. Replace the guard.
The strip length stop rod is located in the center of
the shaft and extends through the back of the belt
guard. To adjust the strip length rod, rst remove
the blade guard. Turn the shaft manually to locate
the set screw on the shaft. Using an allen wrench,
loosen the set screw and slide the rod from behind
to the desired location relative to the blades.
Retighten the set screw.
NOTE: If window stripping is desired when using
the four-blade head, the strip length rod may be
completely removed to allow the wire to pass
through the unit and be stripped continuously.
Replace the blade guard onto the unit.
At the top center of the unit is located the blade
pressure spring and knob. If the yoke will not
move all the way forward to close the blades, then
increase the spring pressure slightly to force more
pressure on the yoke. Conversely, if the blades will
not open all the way when the footpedal or hand
Model K8A Wire Stripper
OPERATING INSTRUCTIONS
SET-UP:
The K8A is shipped with a spider assembly and
2 allen wrenches, 1/16" and 5/64". Required
blade sets must be purchased separately, see
"Blade Selection" in this manual. NOTE: It is
very important that the proper blades are
used for di󰀨erent wire types and sizes to
ensure maximum results. See blade selection
information on previous page for proper blade
selection. The rst step is to install the spider
assembly and blades onto the machine. Refer to
the appropriate instructions below for the four-
blade head.
FOUR-BLADE HEAD SET-UP: To install the
blades into the spider, rst remove each of the
4 pivot pins from the spider by loosening the set
screws holding them in place with the 1/16" allen
wrench provided. One at a time, insert the 4 blades
into the slots of the spider and replace the pivot
pins. Be sure the spider is oriented so the set
screws in the front of the spider face the tips of the
blades. Retighten the pivot pin set screws. Place
the garter spring around the notches at the back of
the 4 blades, and connect the ends of the spring
together.
To install the spider assembly with blades onto
the unit, rst remove the clear guard of the unit by
loosening the 2 screws anchoring the assembly to
the base of the unit. Slide the guard forward and
lift o󰀨. Slide the spider assembly with blades onto
the shaft, ensuring that the 2 set screws on the
spider line up with the 2 ats on the shaft. Hold
the 4 blades in a closed position while sliding the
assembly onto the shaft to ensure that the backs of
all 4 blades rest on the cone at the back of the shaft.
The spider assembly should be rmly seated against
the shoulder on the shaft. Securely tighten the 2
set screws holding the spider assembly onto the
shaft, with the 5/64" allen wrench provided, then
tighten the 2 set screws on the front of the spider
assembly. Replace the clear guard onto the unit.
The K8A must be connected to a 90 PSI air supply.
The unit’s air cylinder is supplied with a 1/8" female
NPT connector. The user must provide a 1/8" male
NPT connector and air hose connected to a 90 PSI

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Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • [e-mail] • www.eraser.com • Fax [phone]
Model K8A Wire Stripper
lever is depressed, or if they open with di󰀩culty,
then reduce the spring pressure slightly.
Plug the power cord into the IEC connector located
at the back of the unit. Plug the unit into the
appropriate properly grounded electrical supply.
OPERATION:
Turn the unit ON. If stripping wire with extruded or
built-up insulation with the four-blade head, run the
unit in the same rotation as the lay of the strands in
the wire being stripped, either clockwise or counter-
clockwise. If stripping lm insulated wire with the four-
blade head, the rotation is not important. However,
changing the rotation from time to time will help
increase blade life when stripping lm insulated wires.
On the K8A, the blades will be in their open position
when the unit is turned on. Insert the wire, and
depress the electrical footswitch to close the blades
and strip the wire. Release the footswitch to allow
the blades to re-open.
Further adjustments to the blade opening and
closing knobs and spring pressure knob may be
made while the unit is running, if necessary. Ensure
that the set screws in the knobs are securely
tightened once the proper adjustments have been
found, to eliminate drifting.
MAINTENANCE:
Keep the unit clean at all times. Periodically apply
light oil to the 3 pivot points of the yoke and between
the cone and shaft. If oil causes wire insulation to
gum up on the yoke or cone, then use a dry lubricant
such as graphite. Examine the drive belt periodically
for wear, and replace if necessary. Replace blades
when dull.
NOTE: Blades on the four-blade head may be
resharpened only in their original set of 4. The blade
set must be returned to the factory for resharpening.
These blades may also be retipped when
resharpening is no longer possible. Contact factory
for details.
TROUBLESHOOTING:
PROBLEM: Wire is di󰀩cult to insert.
SOLUTION: Adjust blade opening setting to a larger
or smaller opening as necessary.
PROBLEM: Blades do not open, or open sluggishly.
SOLUTION: Check for accumulation of foreign
matter or corrosion in the slots of the spider and/
or blades. Clean out or sand lightly to remove
corrosion.
PROBLEM: Inconsistent Strips.
SOLUTIONS:
1) Check consistency of wire diameter.
2) Ensure that both adjusting wheels are secured
with the set screw.
3) Ensure that the threaded shaft that the adjusting
wheels are mounted on is secure.
4) Check the condition of blades, and replace if worn.
5) Check that the spider assembly is securely
seated on the shoulder of the shaft and the set
screws are securely tightened.

IR0919
REV 3/23
The Eraser Company, Inc.
PO Box 4961
Syracuse, NY 13221, USA
Phone: [phone]
Fax: [phone]
Website: www.eraser.com
E-mail: [e-mail]
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Model K8A Wire Stripper