Serial Numbers 995774 & Up
OPERATION
MANUAL
The Challenge Machinery Company
6125 Norton Center Drive
Norton Shores, MI 49441-6081 USA
ChallengeMachinery.com
MODEL EH-3C
PAPER DRILLING
MACHINE
Sold and Serviced by
F. 352-KO
August 2003
INTRODUCTION
WELCOME to the family of Challenge® users. Challenge has been developing and manufacturing Graphics Arts
Equipment for over 100 years and is today one of the world’s leading producers and distributors of Paper Cutters,
Paper Drills and Bindery Equipment.
SAFETY ALERT! This symbol means CAUTION OR WARNING: Personal safety instructions! Pay
special attention to the instructions in bold type. Personal injury may result if the precautions are not
read and followed. See SAFETY PRECAUTIONS, page v.
• This machine is designed for ONE PERSON OPERATION ONLY!
• Always DISCONNECT THE POWER before working on this machine.
• DO NOT OPERATE WITH ANY GUARDS REMOVED! Replace all guards before operating.
• CRUSH HAZARD - Keep hands, hair, cleaning rags, & loose clothing away from drills.
READ THIS MANUAL BEFORE OPERATING! Follow precautions and instructions given and you should have
years of trouble-free operation. If after reading the manual questions still remain, contact your Authorized Challenge Dealer.
FOR PARTS AND SERVICE contact the Authorized Challenge Dealer from whom you purchased your machine.
Use the illustrations and parts lists at the back of this manual to identify the correct parts needed. Always give
the SERIAL NUMBER and MODEL of your machine to insure that the correct parts are sent as soon as possible.
Take a few minutes right now to RECORD YOUR MACHINE SERIAL NUMBER in the space provided on the front
cover of this manual. Also be sure to fill out the warranty card accompanying this manual and return it DIRECT TO
CHALLENGE.
If you bought a used machine, it is important to have the following information on record at Challenge. Copy this
page, fill in the information and send it care of: The Challenge Service Department, 6125 Norton Center Drive,
Norton Shores, MI 49441-6081.
CHALLENGE MODEL SERIAL NUMBER
ATTN COMPANY
ADDRESS
CITY STATE ZIP
PHONE DATE INSTALLED
DEALER’S NAME AND CITY
WARRANTY INFORMATION
PLEASE REVIEW THE WARRANTY SHEET!
It is very important that you read and understand the conditions outlined in the Warranty Information Sheet. It is
in an envelope attached to the outside of the shipping container.
The Warranty Information Sheet must be filled out completely, returned, and be ON-FILE at THE CHALLENGE
MACHINERY COMPANY in order for the warranty to be issued for this machine.
Challenge® is a registered trademark of The Challenge Machinery Company. 6125 Norton Center Drive, Norton Shores, MI 49441-6081.
Copyright © 2003 by The Challenge Machinery Company. All rights reserved. Printed in the U.S.A.
ii
F.352-KO/EH-3C DRILL/AUG 03
TABLE OF CONTENTS
INTRODUCTION........................................................................................... ii
SAFETY PRECAUTIONS ..............................................................................v
CAUTION: POWER LOCK-OUT PROCEDURE .............................................v
WARNING LABEL DEFINITIONS..................................................................vi
SPECIFICATIONS ....................................................................................... vii
PACKING LIST .......................................................................................... viii
1.0 INSTALLATION.................................................................................... 1-1
1.1 UNCRATING THE PAPER DRILL ................................................... 1-2
1.2 INSTALLING THE TABLE AND BACKGAUGE ................................ 1-2
1.3 INSTALLING THE DRILL BLOCKS AND DRILLS ............................ 1-3
1.4 HYDRAULIC LEVEL CHECK......................................................... 1-3
1.5 HOOKING UP THE POWER LINE ................................................. 1-3
1.6 INSTALLING THE CHIP CONTAINER ............................................. 1-3
2.0 OPERATION ....................................................................................... 2-1
2.1 STARTING THE MACHINE ............................................................ 2-1
2.2 OPERATING THE DRILL ............................................................... 2-1
2.3 ADJUSTING THE VERTICAL STROKE .......................................... 2-1
2.4 SETTING THE DISTANCE BETWEEN DRILL HEADS .................... 2-1
2.5 SETTING THE BACKGAUGE POSITION ....................................... 2-1
2.6 USING THE SIDE GUIDE .............................................................. 2-2
2.7 ADJUSTING THE STROKE SPEED ............................................... 2-2
2.8 REMOVING THE CUTTING BLOCKS ............................................ 2-2
2.9 REMOVING DRILLS FROM THE SPINDLE.................................... 2-2
2.10 DRILLING TIPS ........................................................................... 2-3
3.0 ACCESSORIES .................................................................................. 3-1
3.1 GENUINE CHALLENGE HOLLOW DRILLS.................................... 3-1
3.2 CHALLENGE DRILL-EASE LUBRICANT STICK ............................. 3-1
3.3 CHALLENGE DRILLING BLOCKS ................................................. 3-1
3.4 HANDI-SHARP DRILL SHARPENER ............................................. 3-2
3.5 HOLLOW DRILL SHARPENER / CHIP REMOVER ........................ 3-2
3.5.1 Using the Chip Remover....................................................... 3-2
3.5.2 Using the Drill Sharpener ..................................................... 3-2
3.6 RIGHT-SIDE SIDEGUIDE KIT ........................................................ 3-3
3.7 AUTO-TRIP BACKGAUGE ............................................................ 3-3
3.7.1 Setting the side guide stops................................................. 3-3
3.8 FIXED GAGES ............................................................................. 3-4
3.9 TWO-HAND CONTROL KIT ........................................................... 3-5
3.10 DRILL SHIELD KIT ...................................................................... 3-6
F.352-KO/EH-3C DRILL/AUG 03
iii
NOTES
iv
F.352-KO/EH-3C DRILL/AUG 03
SAFETY PRECAUTIONS
This safety symbol means CAUTION/WARNING - PERSONAL SAFETY INSTRUCTION. Read
the instructions because it has to do with safety. Failure to comply with the following instructions may result in personal injury.
• This machine is designed and safeguarded for ONE PERSON operation. NEVER operate the machine
with more than one person.
• Safety of this machine is the responsibility of the user and operator. Use good judgement and com-
mon sense when working with and around this machine.
• READ and understand all instructions thoroughly before using the machine. If questions still remain,
call your Authorized Challenge Dealer - Failure to understand operating instructions may result in
personal injury.
• Only trained and authorized persons should operate the machine.
• DO NOT ALTER SAFETY GUARDS OR DEVICES, they are for your protection and should not be altered
or removed. Severe lacerations could result.
• DISCONNECT POWER before cleaning, lubricating, servicing, or making adjustments not requiring
power. See Power Lockout Procedure below.
• HIGH SPEED DRILL - Keep rags, loose clothing and long hair away form rotating drill. Personal injury
could result from items being caught on drill.
• ALWAYS WEAR SAFETY GLASSES when operating the drill machine.
• Have your electrician make sure the machine is properly grounded.
• Have your electrician check for sufficient power to operate the machine properly.
• OBSERVE ALL CAUTION PLATES AND LABELS on this machine.
• KEEP FOREIGN OBJECTS off table and away from drill.
• BE EXTREMELY CAREFUL when handling and changing the drills. Severe lacerations or dismember-
ment could result from careless handling procedure.
• KEEP THE FLOOR around the machine free of trim, debris, oil and grease.
• When replacing hydraulic parts, loosen the connections slowly to release pressure. Never loosen
connections with the machine running.
• If the machine sounds or operates abnormally, turn it off and consult the Trouble Shooting section of
this manual. If the problem cannot be corrected, have it checked by a qualified service person or
your Authorized Challenge Dealer.
• CRUSH HAZARD, keep feet off the pedal when handling paper under the clamp. DO NOT REST FOOT
ON PEDAL at any time!
• DO NOT REACH UNDER THE DRILL AND CLAMP AREA!
• DO NOT OPERATE WITH ANY GUARDS REMOVED! Replace all guards after adjusting, lubricating or
servicing the machine.
• SEVERE LACERATIONS - Contact with high speed drill could cause severe injury. Always turn ma-
chine off and wait for drill to stop before removing drill bits. Keep hands away from drill(s) when
operating.
CAUTION: POWER LOCK-OUT PROCEDURE
For maximum safety when making adjustments or
repairs to your machine, be sure to lock out the
main power control switch to which the machine
is connected. The switch should be thrown to the
OFF position and a padlock placed in the loop.
The key should be held by the person servicing
the machine.
F.352-KO/EH-3C DRILL/AUG 03
(fig. i)
v
WARNING LABEL DEFINITIONS
CUT/CRUSH HAZARD
SINGLE OPERATOR
SHOCK HAZARD
Keep hands from under drills.
Do not operate with more than one person.
Disconnect power before removing cover. Replace cover
before operation.
vi
SHOCK HAZARD
HAZARDOUS AREA
Disconnect power before removing cover. Replace cover
before operation.
Disconnect power before cleaning, servicing, or making
adjustments not requiring power. Do not alter safety
guards or devices, they are for your protection. Replace all guards, do not operate with any guards removed.
F.352-KO/EH-3C DRILL/AUG 03
SPECIFICATIONS
Drilling
Number of Drill Heads 3
Drill Bit Sizes Available
Range Between Drills 23/4” to 41/2” (7 cm to 11 cm)
Range Between Outside Drills 51/2” to 9” (14 cm to 23 cm)
Maximum Drilling Capacity (Pile Height) 21/2” (63 mm)
Backgauge Adjustment Range (Std. Backgauge) 0 to 5” (0 to 13 cm)
Auto Trip Backgauge (Optional) 0 to 41/2” (0 to 11cm)
Side guide Adjustment Range 0 to 14” (0 to 37 cm)
Vertical Adjustment of Individual Heads
Dimensions
Table Size 191/2” x 311/2” (50 cm x 80 cm)
Table Height 37” (94 cm)
Overall Height 591/4” (151 cm)
Floor Space Needed 36” x 411/2” (91 cm x 105 cm)
Net Weight (Approximate) 525 lbs (236 kg)
Shipping Weight (Approximate) 570 lbs (257 kg)
Electrical
208/230 Volts, 18 Amps, 1 Phase, 50/60 Hz, AC. Service size 30 Amps.
Challenge reserves the right to make changes to any product or specification without notice and without
incurring responsibility to existing units.
1
/8” to 1/2” (3 mm to 13 mm)
1
/4” (6mm)
F.352-KO/EH-3C DRILL/AUG 03
vii
PACKING LIST
Part No. Description Qty.
Basic Machine ....................................................................1
5700 Backgauge Assembly .........................................................1
5734 Table Assembly ..................................................................1
A-5874 Chip Bag ............................................................................1
KK-281-2 Knockout, Cutting Block ......................................................3
KK-473-3 Drill Blocks, 3” (1 doz).........................................................1
CD-4-2-1/2 Hollow Drills, 1/4” Diameter.................................................3
CD-5-2-1/2 Hollow Drills, 5/16” Diameter............................................... 3
K-85 Drift Hole Cover ..................................................................3
A-4950-2 Hand Drill Sharpener / Chip Remover .................................1
4688 Lubrication Stick .................................................................1
4687 Drill Drift .............................................................................1
W-141 1/8” Allen Wrench ............................................................... 1
W-130 3/16” Allen Wrench .............................................................1
W-137 5/32” Allen Wrench .............................................................1
5841 .018” Shim ..........................................................................3
5841-1 .035” Shim ..........................................................................3
Drill Blocks
Drill
Sharpener
Drift Hole
Covers
Hollow Drills
Drill Drift
Lubrication
Stick
Shims
viii
Allen Wrenches
F.352-KO/EH-3C DRILL/AUG 03
1.0 INSTALLATION
Refer to figure 1-1 on this page as well as the parts
lists and drawings in the back of this manual for part
identification and orientation, if necessary.
All guards and instruction plates are installed for your
safety and information and must remain on the machine as shipped from the factory.
1.0 INSTALLATION & SETUP
F.352-KO/EH-3C DRILL/AUG 03
(fig. 1-1)
1-1
1.0 INSTALLATION & SETUP
1.1 UNCRATING THE PAPER DRILL
This machine is shipped on a wooden skid and is enclosed with a protective corrugated cover. It is held
onto the skid with plastic straps. Remove the straps
and carefully cut the corrugated cover down the side
and unwrap it from around the machine. The table, backgauge, and other accessories are packed in separate
boxes and are secured to the machine. Remove these
and carefully position the machine on the floor. Immediately after uncrating, check off parts received against
the packing list. Also, examine for any physical signs
of damage incurred during shipping. The machine is
inspected before and after it is crated at our plant. The
responsibility for filing a claim against the carrier for
damages incurred during shipment rests with the receiver of goods (FOB our factory).
Clean all parts with a commercial cleaning solvent before installing or using the machine.
1.2 INSTALLING THE TABLE AND
BACKGAUGE
Set to 6-7/8”
(fig. 1-3)
Locate the four (4) table mounting bolts, washers, &
nuts shipped in the table drawer. Set the table assembly in place and attach using the hardware as shown in
figure 1-2, but leave the hardware loose.
(fig. 1-2)
Using Standard Backgauge:
Pull Down
Shaft
(fig. 1-4)
Using Auto-Trip Backgauge:
Attach the backgauge assembly to the table and set
both sides to the 6” position (as shown in fig. 1-5). Next,
position the table so that the front surface of the backgauge is 1-7/8” from the front of each pull down shaft
(see fig. 1-5). Now tighten the front two table-mounting
screws. Then move the backgauge forward and tighten
the rear two screws.
Pull Down
Ruler set
to 1-7/8”
Backgauge
set to 6”
Shaft
Attach the backgauge assembly to the table and set
both sides to the 6-7/8” position (as shown in fig. 1-3).
Next, position the table so that the back surface of the
backgauge comes in contact with the front of each pull
down shaft (fig. 1-4). Now tighten the front two tablemounting screws. Then move the backgauge forward
and tighten the rear two screws.
1-2
(fig. 1-5)
F.352-KO/EH-3C DRILL/AUG 03
1.0 INSTALLATION & SETUP
Note: Further adjustments may be necessary once the
machine is ready to drill. See Table Position Adjustment (section 4.3.1).
1.3 INSTALLING THE DRILL BLOCKS
AND DRILLS
Place the drill block knock-outs in position (refer to fig.
1-1 if necessary). Now set the three drill blocks place.
Check to see if the blocks are flush with the table. Place
shims under the blocks if necessary.
Insert the tapered head of the hollow drills into the
spindles. Be sure that the drift hole covers are in place
before operating the machine (fig 1-1). The drift hole
covers prevent paper chips from flying out while drilling.
CAUTION: Always handle drills with
care to avoid severe lacerations. Even
dull drills are sharp enough to cause
lacerations.
1.4 HYDRAULIC LEVEL CHECK
IMPORTANT: Select the proper transformer primary
tap 208 or 230 Volts to match the voltage supplied
to the machine (fig. 1-6).
(fig. 1-6)
It is also important that the proper line voltage be maintained. Failure to do so will result in improper operation
of the machine (see the troubleshooting section of this
manual for specific problems). It may be necessary to
provide a separate branch power line for the machine.
Check the level of the oil in the hydraulic reservoir. This
check is made by first removing the louvered panel at
the left side of the stand (two screws hold it in place)
and locating the breather cap on the top of the reservoir.
The breather cap has a dip stick attached for checking
the oil. When screwed in (and then removed to check)
there should be approximately an 1/8” (3 mm) of oil on
the stick. Some machines are equipped with a clear
reservoir in which case the oil level can be checked by
visually inspecting the oil level. There is a full level line
marked on the reservoir. Recommended oils are found
in the maintenance section of this manual (section
4.5.1).
CAUTION: Always disconnect the
power when cleaning, servicing, or
lubricating your drill, see Lock Out Procedures, page v.
1.5 HOOKING UP THE POWER LINE
The EH-3C is factory wired for 208/230 Volt, 1 phase,
50/60 hz. operation. It is the customer’s responsibility
to wire the machine for the rated voltage using a 30
Amp circuit (minimum). The recommended circuit overload protection device should be 20 Amps. The recommended wire size for this hookup is #10 gauge.
Since the standard machine is intended for a single
phase hookup, simply fasten either wire of the power
cord to either terminal of the starter and the ground wire
to the designated terminal (fig. 1-7).
(fig. 1-7)
1.6 INSTALLING THE CHIP CONTAINER
The chip container is installed by slipping it over the two
hooks provided on the rear of the machine.
F.352-KO/EH-3C DRILL/AUG 03
1-3
1.0 INSTALLATION & SETUP
NOTES
1-4
F.352-KO/EH-3C DRILL/AUG 03
2.0 OPERATION
2.0 OPERATION
2.1 STARTING THE MACHINE
The power for this machine is supplied by two motors;
one is for the hydraulic power pack, the other is for the
spindle. They are both started and stopped simultaneously by a single set of start-stop buttons located on
the stand under the table (fig. 1-1). Be sure both motors are operating before trying to drill paper.
2.2 OPERATING THE DRILL
CAUTION: Always wear safety glasses
when operating this machine.
Pressing down on the foot switch activates the hydraulic
unit which brings the drill heads (and drills) down to
the table. When the drills reach the bottom of their
stroke, they will automatically return the “up” position.
(Note: The vertical stroke of the drills must be set before drilling to provide the proper drill depth. See section 2.3 for adjustment procedures). The pedal must
be released and depressed again before drilling the
next set of holes, assuring full control and allowing no
repeat stroke. By releasing the pedal, the operator
can stop the drills in their downward stroke at any time
allowing them to return to their normal position, thus
preventing costly errors. NEVER REST YOUR FOOT
ON THE TREADLE WITHOUT INTENDING TO
BRING DOWN THE DRILLS!
2.3 ADJUSTING THE VERTICAL STROKE
bottom sheets as well as a shorter drill life from drilling
into the cutting block. After the center drill is adjusted,
each outside spindle can be adjusted. Turn counterclockwise to lower and clockwise to raise. No locking
is necessary. Once all three drills are set, drill through
a full lift of paper. A final adjustment of the drill depth
adjusting screw may be necessary to obtain the best
results.
2.4 SETTING THE DISTANCE BETWEEN
DRILL HEADS
This machine incorporates three drilling heads operating on three belt-driven spindles. The center head is
stationary while the two outside heads have a lateral
adjustment of 13/4” each.
This provides an adjustment range of 23/4” to 41/2” (7
cm to 11 cm) between the center drill and either of the
outside drills, or a range of 51/2” to 9” (14 cm to 23 cm)
between the two outside drills.
The lateral adjustment is accomplished by loosening
the clamp knob (a black, plastic hand knob) located at
the rear of each outside head, and then turning the 4lobed, black knob located at the outside of each head.
This moves the heads along a shaft. A scale and pointer
located at the front of the heads gives a reading in
inches and millimeters of the center line relationship to
the center head. When a setting is made, make certain that the clamp knob is tightened again.
Any combination of three heads can be used, that is
one, two, or three holes may be drilled if desired. It is
recommended, however that no more than two half inch
hollow drills be used at the same time.
The vertical stroke of the machine determines the exact
depth the drills will reach at the bottom of their stroke.
Whenever installing a new set of drills, the vertical stroke
must be adjusted before drilling.
The two outside heads are provided with independent
height adjustment while the center head works from the
center overall adjusting screw. This is necessary because of the variance in length of the drills. Start by
adjusting the center head to its highest point. This is
accomplished by turning the drill depth adjustment
screw (fig. 1-1) counterclockwise until it stops turning.
Then adjust the side heads all the way up by turning
the knurled ring on the heads clockwise (use the provided drill drift in the holes if necessary). Now, with
the new drills in the place, put two or three sheets of
paper under the heads. The center spindle should then
be adjusted so that the center drill just cuts through
the paper. Too deep will cause a ragged hole in the
F.352-KO/EH-3C DRILL/AUG 03
2.5 SETTING THE BACKGAUGE
POSITION
The backgauge position is adjusted by first loosening
the two thumb screws under the table. This will allow
the backgauge to move freely. Then use the two scales
on the top of the table to set the backgauge to the desired position. The scales read in inches and millimeters and will give the distance from the edge of the
sheet to the center of the holes. Be sure the 1” (2.5
cm) square pieces mounted to the backgauge are
aligned on top of the scales to provide the proper reading (fig. 1-1). Tighten the thumbscrews when finished.
2-1
2.0 OPERATION
2.6 USING THE SIDE GUIDE
(fig. 2-1)
To adjust the position of the side guide, loosen the two
black knobs until the side guide is free to slide sideways. Slide the side guide to the desired position and
then tighten the two knobs. For certain hole positions,
it may be necessary to remove the rectangular spacer
from the side guide assembly (fig. 2-1).
2.8 REMOVING THE CUTTING BLOCKS
Each cutting block is removed by inserting your fingers in the hole provided in the frame (under the table)
and pushing up on the cutting stick knock out. There
are three holes; one on each side of the frame and one
in the front.
2.9 REMOVING DRILLS FROM THE
SPINDLE
Remove the drift hole cover from the spindle to expose the drift hole. Then, with the flat side down, insert the drill drift into the hole and lift upward. The
upward movement forces the drill down and releases
it from the spindle.
2.7 ADJUSTING THE STROKE SPEED
(fig. 2-2)
The hydraulic unit is equipped with an adjustable valve
for regulating the speed on the drill stroke (up and down
travel). Soft stocks such as mimeographs, etc., are
apt to wrinkle at high speeds, and the speed should be
set to a point where the best results are obtained.
This adjustment is made by turning the adjustable valve
(located on the right side of the drilling machine stand)
counterclockwise to reduce speed and clockwise to
increase speed (fig. 2-2)
2-2
F.352-KO/EH-3C DRILL/AUG 03
2.0 OPERATION
2.10 DRILLING TIPS
Important! To prevent the drill from overheating, always avoid drilling too slowly. The drill stroke speed should
be set at the fastest speed possible that still allows the drills to cut easily through the paper.
Slotted Holes - Instead of punching slotted holes for five and seven hole universal binding work, save time and
cost by drilling a 1/2” (1.3 cm) diameter hole in place of the slot. The slot is only intended to allow the post or ring
to be used in either location, and the large hole permits this.
Plastic Bindings - Drilling holes for plastic bindings, instead of punching them, is practical and saves a great deal
of time, particularly on long run jobs.
Keep Drills Sharp - A dull drill is the major cause of drill breakage and production tie-ups. Usually after three
hours of drilling, depending on the type of paper being processed, the drill should be sharpened. A dull drill results
in poor quality work.
Keep Drills Clean - A dirty and rusty drill will not permit the free upward passage of the drill chips. Pressure built
up by a clogged drill will split or break the drill. To keep it free from dirt or rust, clean the drill of all chips after each
use and apply a light oil to the inside and outside. Drills should be cleaned out immediately after each use. This
is particularly true if a coated or varnished stock has been drilled. On these jobs the coating on the chips frequently
fuse the chips into one solid mass when the drill cools, causing breakage the next time the drill is used.
Lubricate Drills - Lubrication assists in the passage of the chips and helps avoid overheating of the drills. Use
readily available stick lubricants for this purpose. Hold the end of the stick against the side of the rotating drill. Be
sure to touch the cutting edge with the lubricant also. Wipe off excess oil before drilling. CARE MUST ALWAYS
BE TAKEN WHEN HANDLING DRILLS.
Keep Spindle Clean - Clean out the drill spindle frequently. This will prevent any buildup in the spindle of the drill.
Set the Drills Correctly - Do not cut too deeply into the cutting block. The drill should just touch the block and
cleanly cut through the bottom sheet. During drilling, do not set the drill deeper into the block but change the
position of the block frequently. Drilling deeper into the block dulls the drills quickly. Use a piece of chipboard
underneath your stock. This will make handling the stock easier and will ensure that the last sheet is cut cleanly
through.
Check for Drill Wobble - If spindles are badly worn or bent through misadjustment, have them replaced immediately. A wobbly or loosely held drill can break.
Check Your Drill Sharpener - The cutting edge of the sharpening bit should be inspected frequently to make
certain that it is sharp and free of nicks. Never let a drill drop onto the sharpening bit. It will chip the sharpening
edge. Use gentle pressure when sharpening - let the sharpening bit do the work. Carefully check the sharpness
of the drill after sharpening. The cutting edge should be razor sharp.
Check Belt on the Drilling Machine - The belt should be kept tight to assure proper speed of the drill. When the
drill slows down, it acts more like a punch which results in poor quality work and drill breakage.
Just a little time and effort taken with each use of your paper drilling machine should result in trouble free operation
over many years.
F.352-KO/EH-3C DRILL/AUG 03
2-3
2.0 OPERATION
NOTES
2-4
F.352-KO/EH-3C DRILL/AUG 03
3.0 ACCESSORIES
3.1 GENUINE CHALLENGE HOLLOW DRILLS
In 13 Standard Sizes For Every Drilling Need
3.0 ACCESSORIES
1/8” 3/16” 1/4” 9/32”
5/32” 7/32”
17
/64” 5/16” 3/8” 7/16”
11
/32”
13
/32” 1/2”
All drills carried in stock by local Challenge dealers (17/32” & 9/16” available by special order).
HOLLOW DRILLS
Diameter x Drill Capacity Cat. No.
1
/8” x 5/8” (3.2 x 16 mm).................... CD-2-3
5
/32” x 11/8” (4 x 29 mm).................... CD-52
3
/16” x 15/8“ (4.8 x 41 mm)................. CD-3
7
/32” x 2” (5.6 x 51 mm) .................... CD-72
1
/4” x 2” (6.3 x 51 mm) ..................... CD-4
1
/4” x 21/2” (6.3 x 63.5 mm) ............... CD-4-21/2
17
/64” x 2” (6.7 x 51 mm) ................... CD-174
9
/32” x 2” (7.1 x 51 mm) .................... CD-92
5
/16” x 2” (7.9 x 51 mm) .................... CD-5
5
/16” x 21/2” (7.9 x 63.5 mm) .............. CD-5-21/2
11
/32” x 2” (8.7 x 51 mm) ................... CD-112
3
/8” x 2” (9.5 x 51 mm) ..................... CD-6
3
/8” x 21/2” (9.5 x 63.5 mm) ............... CD-6-21/2
13
/32” x 2” (10.3 x 51 mm) ................. CD-132
7
/16” x 2” (11.1 x 51 mm) .................. CD-7
1
/2” x 2” (12.7 x 51 mm) ................... CD-8
1
/2” x 21/2” (12.7 x 63.5 mm) ............. CD-8-21/2
TEFLON COATED HOLLOW DRILLS
Diameter x Drill Capacity Cat. No.
1
/8” x 5/8” (3.2 x 16 mm).................... TCD-2-3
5
/32” x 11/8” (4 x 29 mm).................... TCD-52
3
/16” x 15/8“ (4.8 x 41 mm)................. TCD-3
7
/32” x 2” (5.6 x 51 mm) .................... TCD-72
1
/4” x 2” (6.3 x 51 mm) ..................... TCD-4
1
/4” x 21/2” (6.3 x 63.5 mm) ............... TCD-4-21/2
17
/64” x 2” (6.7 x 51 mm) ................... TCD-174
9
/32” x 2” (7.1 x 51 mm) .................... TCD-92
5
/16” x 2” (7.9 x 51 mm) .................... TCD-5
5
/16” x 21/2” (7.9 x 63.5 mm) .............. TCD-5-21/2
11
/32” x 2” (8.7 x 51 mm) ................... TCD-112
3
/8” x 2” (9.5 x 51 mm) ..................... TCD-6
3
/8” x 21/2” (9.5 x 63.5 mm) ............... TCD-6-21/2
13
/32” x 2” (10.3 x 51 mm) ................. TCD-132
7
/16” x 2” (11.1 x 51 mm) .................. TCD-7
1
/2” x 2” (12.7 x 51 mm) ................... TCD-8
1
/2” x 21/2” (12.7 x 63.5 mm) ............. TCD-8-21/2
Special order drills
17
/32” x 2” (13.5 x 51 mm) ................. CD-172
9
/16” x 2” (14.3 x 51 mm) .................. CD-9
3.2 CHALLENGE DRILL-EASE
LUBRICANT STICK
Cat. No. 4688
This lubricating stick provides a dry stainless lubricant
which has many uses throughout the printing plant. It
is specially recommended for use on hollow drills for
easier drilling, particularly when drilling clay coated stock.
It eliminates binding and excessive heating of the drill.
Will not discolor the stock.
CARE MUST ALWAYS BE TAKEN WHEN USING
STICK AND HANDLING DRILLS.
F.352-KO/EH-3C DRILL/AUG 03
3.3 CHALLENGE DRILLING BLOCKS
Cat. No. KK-473-3
These Challenge 3” End-Wood Drilling Blocks are for
round hole drilling operations. Sold in packages of 12.
3-1
3.0 ACCESSORIES
3.4 HANDI-SHARP DRILL SHARPENER
Cat. No. 57100
The Handi-Sharp mounts on the edge of table or bench.
A dull hollow drill bit is placed in the holder, and the
cutting bit is pushed against the end of the hollow drill
until its spring bottoms out. The spring prevents excessive force from being applied while sharpening. Turning
the handle while applying a hone produces a fine edge.
Item Cat. No.
Replacement Cutting Bit 6469
Adapter for other style drill bits 57114
3.5 HOLLOW DRILL SHARPENER / CHIP REMOVER
For fast, easy drill sharpening and chip removal
CAUTION: Drills are sharp even after use. Be careful to keep edge
away from your body. To prevent personal injury and/or damage to
the drill, ALWAYS keep drills in protected area.
3.5.1 Using the Chip Remover
(cut-away view)
NOTE: Chip remover is only for use with hollow drill diameters 3/
16” and larger
1. CAREFULLY place a hollow drill in the holder section as shown, and insert the holder (with drill) into
the chip remover end as shown.
3.5.2 Using the Drill Sharpener
(cut-away view)
2. Firmly tap the entire assembly on a solid surface
to remove the chips from the hollow drill.
1. CAREFULLY place a hollow drill in the holder section as shown, and insert the holder (with drill) into
the sharpener end as shown. Be very careful to
bring the drill and cutting tool together with out
bumping. The cutting tool is made of GLASS
HARD material and may be chipped.
3-2
2. USE CLOCKWISE ROTATION while maintaining
an even pressure, until the hollow drill is sharpened (usually two or three turns). The cutting tool
seldom requires replacing, but when it does become necessary, the bit can be ordered through
your Challenge Dealer (Cat. No. 4952).
F.352-KO/EH-3C DRILL/AUG 03
3.6 RIGHT-SIDE SIDEGUIDE KIT
Cat. No. K-5731
This kit includes all of the parts and hardware necessary to add a right-hand sideguide to your existing
backguage. When used in conjunction with the lefthand sideguide, multiple hole patterns can be drilled by
shifting the stock from one sideguide to the other between drilling cycles.
3.7 AUTO-TRIP BACKGAUGE
Cat. No. A-4615-9
3.0 ACCESSORIES
This optional backgauge assembly provides additional
versatility to the EH-3C. The automatic trip on the side
guide permits step and repeat type of operation with a
minimum distance between holes of 3/8” (9.5 mm) with
the standard stops or 1/4” (6.3 mm) minimum by the
use of a fixed gage, available as optional equipment.
As each set of holes is drilled, the side guide is automatically tripped, and as soon as the drills clear the
stock on their up stroke, the guide is free to move to its
next stop. This is accomplished by pushing the stock
to the left and moving the guide at the same time. When
drilling one, two or three holes only, that fall within the
9” (23 cm) limitations of the machine, the automatic
trip bracket (located at the left of the machine) can be
turned so that it does not engage the trip lever.
F.352-KO/EH-3C DRILL/AUG 03
3.7.1 Setting the side guide stops
First set the rear gage to the desired back margin. Be
sure both sides are set to the same dimension and
tighten the two thumbscrews. Next, remove the guide
shaft and set the guide stops to the desired distance
between holes (a scale in the guide shaft is provided for
this purpose). The guide shaft is then replace in the
rear gage and final adjusting or centering of holes is
accomplished with the knurled screw at the extreme
left end of the guide shaft.
The automatic trip gage comes equipped with seven
stops. Additional stops can be purchased at a very
nominal price. Challenge fixed index gages are recommended where the same job is to be handled over and
over again. They are easily and quickly attached and
removed. NOTE: When drilling narrow strips, the side
guide roller assembly should be mounted on the inside
of the side guide assembly.
3-3
3.0 ACCESSORIES
3.8 FIXED GAGES
For Fast, Accurate Hole Spacing
(For use with optional auto-trip backgauge only)
These fixed gages with pre-cut hole spacings fit on the
side guide in place of the moveable stops. To use,
position the gage so that the right end lines up with the
dimension on the scale for the centerline of the first
hole to be drilled. Use of the stops on fixed gages is
the same as using the adjustable stops.
In addition to 2-5 hole patterns, fixed gages are available from stock in the following standard types:
22-stop gage, 1/2” centers for multi-ring binders
25-stop gage, 3/8” centers
25-stop gage, 1/4” centers
34-stop gage, 1/2” centers
46-stop gage, 3/8” centers
50-stop gage, 1/4” centers
Custom patterns can also be supplied, call for details.
3-4
F.352-KO/EH-3C DRILL/AUG 03
3.9 TWO-HAND CONTROL KIT
Cat. No. A-4851-50
3.0 ACCESSORIES
This 2-hand control safety kit can be installed on the
EH-3C in place of the standard foot pedal control. All
of the necessary hardware and instructions are included
in the kit. The 2-hand control offers anti-tiedown and
F.352-KO/EH-3C DRILL/AUG 03
anti-repeat features, which means both buttons must
be released between each cycle, and both buttons must
be pressed within .5 seconds of each other.
3-5
3.0 ACCESSORIES
3.10 DRILL SHIELD KIT
Cat. No. 48004
This drill shield safety kit includes a clear Lexan shield
that protects the operator from contacting the spinning
drills. The kit can be installed on all EH-3A, EH-3B,
and EH-3C machines. All of the necessary hardware
and instructions are included in the kit (see Page 5-
24).
3-6
F.352-KO/EH-3C DRILL/AUG 03
NOTES
3.0 ACCESSORIES
F.352-KO/EH-3C DRILL/AUG 03
3-7
F.352-KO/EH-3C DRILL/AUG 03© 2003 by The Challenge Machinery Company. All rights reserved. Printed in the U.S.A.
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