Eraser K8 Series User manual

base and the area containing the clevis, underneath and
behind the blades. Drill the holes in the bench. Mount the
stripper, using 1/4" fasteners, and ensure that the clevis
is hanging freely in its 5/8" clearance hole through the
bench.
Screw the threaded end of the upper rod, the one
containing the turnbuckle, into the clevis on the underside
of the bench. Then, screw the coarse threaded end of the
lower rod into the turnbuckle. Adjust the position of the
two rods with the turnbuckle so that the lower rod hangs
6" above the floor surface. Align the footpedal assembly
on the floor so that the clevis of the footpedal is directly
underneath the lower rod, and the front edge of the
footpedal base is aligned with the front edge of the unit.
Mark mounting holes on the floor and mount the footpedal
with appropriate fasteners.
Screw the lower rod into the footpedal clevis and adjust
the rods with the turnbuckle so that the footpedal is in its
highest position. Once properly set, tighten the turn-
buckle and both clevises in place by tightening the Hex
nuts on the two rods.
MODEL K8A: 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 air
supply. Mount the unit securely to the bench, and place
the electrical footswitch on the floor.
ALL UNITS: With the blades installed and the unit
securely mounted to the bench, blade adjustments may
be made for the wire to be stripped. All units contain 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 K8B, the blades remain closed
until the footpedal is depressed to open them. On the
K8A, the blades are open, and the electrical footswitch is
activated to close them.
To adjust the wheels, first 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
OPERATING INSTRUCTIONS
(Models K8B, K8A)
Model K8 Series Wire Strippers
SET-UP:
ALL K8 UNITS: All K8 Series units are shipped with a
spider assembly and set of four blades. Also included
will be 2 allen wrenches, 1/16" and 5/64". NOTE: It is
very important that the proper blades are used for
different wire types and sizes to ensure maximum
results. See blade selection information on previ-
ous page for proper blade selection. The first 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 - Refer to the Model K8A
Front and Side View Drawing for proper orientation of
blades and spider.
To install the blades into the spider, first 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,
first 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 off. Slide the spider
assembly with blades onto the shaft, ensuring that the 2
set screws on the spider line up with the 2 flats 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 firmly 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.
MODEL K8B: The K8B is shipped with a separate
mechanical footpedal which must be installed. When
using the footpedal, the K8B must be used on a bench
whose height ranges from 34-38 1/2" from the floor.
First, locate the hole pattern diagram in the drawing
section of these instructions. Using the pattern as a
guide, measure and mark the holes to be drilled on the
benchtop. Place the K8B over the marks and ensure that
the holes on the bench match up with the holes in the K8B
Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • www.eraser.com • Fax [phone]
Eraser International Ltd. • England • Ph:[phone] • www.eraser-international.com • Fax [phone]

guide for the wire being stripped, and the operator will find
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, first 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 continu-
ously. 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 lever is depressed, or if they open with
difficulty, then reduce the spring pressure slightly.
Finally, 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, either
115V, 60 Hz for the American plug, or 220/240V, 50 Hz
for the European or UK plugs.
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 strip-
ping film 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 film insulated wires.
To strip with the K8B, depress the footpedal to open the
blades. Insert the wire up to the strip length stop, release
the blades, and pull the wire out, removing the slug. For
extruded wires, it is sometimes desirable to leave the slug
on the wire for later removal at termination. To do this,
allow the blades to close and sever the insulation, then
depress the footpedal again to open the blades, and
remove the wire with slug intact.
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. Resharpen or replace blades when dull.
NOTE: Blades onthefour-bladehead maybe 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 difficult to insert.
SOLUTION: 1. Adjust blade opening setting to a larger
or smaller opening as necessary.
PROBLEM: Blades do not open, or open sluggishly.
SOLUTION: 1. Check for accumulation of foreign mat
ter or corrosion in the slots of the spider
and/or blades. Clean out or sand lightly
to remove corrosion.
PROBLEM: Inconsistent Strips.
SOLUTION: 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.
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 installed contrary
to Eraser's written instruction manual, or which has been
subjected to misuse, negligence or accident, or which has
been repaired or altered by anyone other than Eraser, or
which has been used in a manner or for a purpose for which
the product was not intended.
Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • www.eraser.com • Fax [phone]
Eraser International Ltd. • England • Ph:[phone] • www.eraser-international.com • Fax [phone]

ROTARY BLADE STRIPPERS FOR
EXTRUDED OR MAGNET WIRE
Specifications
Models - K8A, K8B
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)
Infinite strip lengths possible if length stop is removed
Power…….……………… Air operated, 115V 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)
Foot switch assembly K8B……………8" x 11 1/2" x 4 1/2"
(203mm x 292mm x 114mm)
Weight
K8A……………………………………………34lbs. (15.4 Kg)
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
different 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.)
For a free application evaluation, send 3 - 5 feet of wire
or cable along with stripping specifications to our
Customer Service Department.
Operation
Blade Specification
Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • [email protected] • www.eraser.com • Fax [phone]
Eraser International Ltd. • England • Ph:[phone] • [email protected] • www.eraser-international.com • Fax [phone]

Ordering Information
Units
AR1641 (K8A)..........Air operated stripper, 115V 60Hz, 90 PSI
AR1642 (K8A)........................Air operated stripper, 220/240V
50Hz European plug
AR1643 (K8A)........................Air operated stripper, 220/240V
50Hz UK plug
AR1651 (K8B) ........Foot switch operated stripper, 115V 60Hz
AR1652 (K8B)...........Foot switch operated stripper, 220/240V
50Hz European plug
AR1653 (K8B)...........Foot switch operated stripper, 220/240V
50Hz UK plug
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 wires with hard or thin insulation.
IR0337.................Blades with relief (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 film 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)
IR0322......................Wire sizes 21-24 AWG (0.71-0.51mmø)
IR0323......................Wire sizes 25-28 AWG (0.46-0.33mmø)
Special blades available for unusual insulations and applica-
tions.
NR3210…...Diamond tipped blades; Material sample required
for sizing. See Sample Evaluation Form in this manual.
Blade Sharpening Service
We offer a blade re-grinding and re-tipping service.
Blades are precisely ground in matched sets on
fixtures to insure correct stripping dimensions are
maintained. Re-grinding without the use of fixtures
will be detrimental to the operation of the blades.
Return blades in sets of four to our factory for re-
grinding.
Model K8B
Close-up of stripping head
ROTARY BLADE STRIPPERS 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
Service and all spare parts available.
Eraser Company Inc. • Syracuse, NY USA • Ph: 315-454-3237 • [email protected] • www.eraser.com • Fax [phone]
Eraser International Ltd. • England • Ph:[phone] • [email protected] • www.eraser-international.com • Fax [phone]