Grizzly Drill H8203 User Manual

MODEL H8203

PROFESSIONAL DRILL

SHARPENING MACHINE

OWNER'S MANUAL

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#BL10076 PRINTED IN TAIWAN

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Table of Contents

INTRODUCTION............................................................................................................................... 2

Foreword .................................................................................................................................... 2

Contact Info................................................................................................................................ 2

Machine Data Sheet................................................................................................................... 3

Identification ............................................................................................................................... 5

Drill Bit Anatomy......................................................................................................................... 6

SECTION 1: SAFETY....................................................................................................................... 7

Safety Instructions for Machinery............................................................................................... 7

Additional Safety for Drill Sharpening Machines........................................................................ 9

SECTION 2: CIRCUIT REQUIREMENTS ...................................................................................... 10

110V Operation........................................................................................................................ 10

SECTION 3: SETUP....................................................................................................................... 11

Setup Safety............................................................................................................................. 11

Unpacking ................................................................................................................................ 11

Inventory................................................................................................................................... 11

Site Considerations.................................................................................................................. 12

Test Run................................................................................................................................... 12

SECTION 4: OPERATIONS ........................................................................................................... 13

Operation Safety ...................................................................................................................... 13

Overview .................................................................................................................................. 13

Basic Controls.......................................................................................................................... 13

Calibrating Drill Bit.................................................................................................................... 14

Setting Point Angle................................................................................................................... 16

Front Grinding Area.................................................................................................................. 16

Rear Trimming Area................................................................................................................. 17

SECTION 5: MAINTENANCE ........................................................................................................ 19

Schedule .................................................................................................................................. 19

Drill Sharpening Accessories ................................................................................................... 19

Cleaning ................................................................................................................................... 19

Changing Grinding Wheel........................................................................................................ 19

SECTION 6: SERVICE ................................................................................................................... 21

Troubleshooting........................................................................................................................ 21

Wiring Diagram ........................................................................................................................ 23

Parts Breakdown...................................................................................................................... 24

Parts List .................................................................................................................................. 25

WARRANTY AND RETURNS........................................................................................................ 29

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INTRODUCTION

Contact Info

Foreword

If you have any comments regarding this manual,

please write to us at the address below:

WeareproudtooffertheModelH8203Professional

Drill Sharpening Machine. This machine is part

of a growing Grizzly family of fine metalworking

machinery. When used according to the guide-

lines set forth in this manual, you can expect

years of trouble-free, enjoyable operation and

proof of Grizzly’s commitment to customer satis-

faction.

Grizzly Industrial, Inc.

Technical Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069

Email: manuals@grizzly.com

We stand behind our machines. If you have any

service questions or parts requests, please call or

write us at the location listed below.

The specifications, drawings, and photographs

illustrated in this manual represent the Model

H8203 when the manual was prepared. However,

owing to Grizzly’s policy of continuous improve-

ment, changes may be made at any time with no

obligation on the part of Grizzly.

Grizzly Industrial, Inc.

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone: (570) 546-9663

Fax: (800) 438-5901

E-Mail: techsupport@grizzly.com

Web Site: http://www.grizzly.com

For your convenience, we always keep current

Grizzly manuals available on our website at www.

grizzly.com. Any updates to your machine will be

reflected in these manuals as soon as they are

complete. Visit our site often to check for the lat-

est updates to this manual!

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Identification

Figure 1. Model H8203 identification.

A. Collet

B. Rear Trimming Area

C. Cleaning Brush

D. Front Grinding Area

E. Point Angle Adjusting Scale

F. ON/OFF Switch

G. Calibrating Device

H. Calibrating Dial

I. Lock Ring

J. Collet Holder

K. Collet Tray

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Drill Bit Anatomy

Shank Length

Flute Length

Flute

Shank

Overall Length

Figure 2. Side view of drill bit parts.

Heel

Cutting Lip

Back Relief

Chisel Edge

Land

Both Edges

Are Aligned

Web

Figure 3. Top view of standard drill bit parts.

Figure 4. Top view of split point drill bit parts.

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Safety Instructions for Machinery

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Additional Safety for Drill Sharpening

Machines

1. BURN HAZARD. To prevent getting burned,

do not touch the end of freshly ground bits,

which may be hot.

3. ACCESSORIES. Avoid using accessories

or attachments not specifically designed for

this machine.

2. GRINDING WHEEL CONTACT. Avoid

inserting fingers into grinding areas when

machine is turned ON.

4. EXPERIENCING DIFFICULTIES. If at any

time you are experiencing difficulties per-

forming the intended operation, stop using

the machine! Contact Tech Support at

(570) 546-9663.

No list of safety guidelines can be complete.

Every shop environment is different. Always

consider safety first, as it applies to your

individual working conditions. Use this and

other machinery with caution and respect.

Failure to do so could result in serious per-

sonal injury, damage to equipment, or poor

work results.

Like all machinery there is potential danger

when operating this machine. Accidents are

frequently caused by lack of familiarity or

failure to pay attention. Use this machine

with respect and caution to lessen the pos-

sibility of operator injury. If normal safety

precautions are overlooked or ignored, seri-

ous personal injury may occur.

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SECTION 2: CIRCUIT REQUIREMENTS

Power Connection Device

The Model H8203 comes with a 5-15 plug, similar

to Figure 5, to connect the machine to power.

110V Operation

Serious personal injury could occur if you

connect the machine to power before com-

pleting the setup process. DO NOT connect

the machine to the power until instructed

later in this manual.

Electrocution or fire could

Figure 5. Typical 5-15 plug and receptacle.

result if machine is not

grounded and installed in

compliance with electrical

codes. Compliance MUST

be verified by a qualified

electrician!

Full Load Amperage Draw

Motor Draw.............................................3 Amps

Minimum Circuit Requirements

You MUST connect your machine to a grounded

circuit that is rated for the amperage given below.

Never replace a circuit breaker on an existing cir-

cuit with one of higher amperage without consult-

ing a qualiﬁed electrician to ensure compliance

with wiring codes. If you are unsure about the

wiring codes in your area or you plan to con-

nect your machine to a shared circuit, consult

a qualified electrician.

This machine MUST have a ground prong in

the plug to help ensure that it is grounded.

DO NOT remove ground prong from plug

to fit into a two-pronged outlet! If the plug

will not fit the outlet, have the proper outlet

installed by a qualified electrician.

Extension Cords

We do not recommend using extension cords, but

Minimum Circuit Size.............................15 Amps

if you find it absolutely necessary:

•

Use at least a 16 gauge cord that does not

exceed 50 feet in length!

The extension cord must have a ground wire

and plug pin.

A qualified electrician MUST size cords over

50 feet long to prevent motor damage.

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SECTION 3: SETUP

Setup Safety

Inventory

The following is a description of the main compo-

nents shipped with your machine. Lay the compo-

nents out to inventory them.

This machine presents

serious injury hazards

to untrained users. Read

through this entire manu-

al to become familiar with

the controls and opera-

tions before starting the

machine!

Note: If you can't find an item on this list, check

the mounting location on the machine or examine

the packaging materials carefully. Occasionally

we pre-install certain components for shipping

purposes.

Box 1: (Figure 6)

Qty

A. Collets .......................................................11

— 2.0-3.0mm (¹⁄8") Collet ........................... 1

— 3.1-4.0mm (⁵⁄32") Collet .......................... 1

— 4.1-5mm (³⁄16") Collet ............................. 1

— 5.1-6mm (¹⁄4") Collet............................... 1

— 6.1-7mm (⁹⁄32") Collet.............................. 1

— 7.1-8mm (⁵⁄16") Collet.............................. 1

— 8.1-9mm (³⁄8") Collet .............................. 1

— 9.1-10mm (²⁵⁄64") Collet........................... 1

— 10.1-11mm (⁷⁄16") Collet........................... 1

— 11.1-12mm (¹⁵⁄32") Collet ......................... 1

— 12.1-13mm (¹⁄2") Collet ........................... 1

B. Collet Holder............................................... 1

C. Hex Wrench 4mm....................................... 1

D. Lock Ring ................................................... 1

Unpacking

Your machine was carefully packaged for safe

transportation. Remove the packaging materials

from around your machine and inspect it. If you

discover the machine is damaged, please imme-

diately call Customer Service at (570) 546-9663

for advice.

Save the containers and all packing materials for

possible inspection by the carrier or its agent.

Otherwise, filing a freight claim can be difficult.

When you are completely satisfied with the condi-

tion of your shipment, inventory the contents.

Figure 6. H8203 inventory.

If any nonproprietary parts are missing (e.g. a

nut or a washer), we will gladly replace them; or

for the sake of expediency, replacements can be

obtained at your local hardware store.

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Site Considerations

Test Run

Test run your machine to make sure it runs prop-

erly.

Placement Location

Consider existing and anticipated needs, size of

material to be processed through each machine,

and space for auxiliary stands, work tables or

other machinery when establishing a location for

your new machine. See Figure 7 for the minimum

working clearances.

If, during the test run, you cannot easily locate

the source of an unusual noise or vibration, stop

using the machine immediately, then review the

Troubleshooting on Page 21.

If you still cannot remedy a problem, contact our

Tech Support at (570) 546-9663 for assistance.

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To test run the machine:

1. Make sure you have read the safety instruc-

tions at the beginning of the manual and that

the machine is setup properly.

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2. Make sure all tools and objects used during

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set up are cleared away from the machine.

3. Connect the machine to the power source.

4. Turn the machine ON.

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Figure 7. Minimum working clearances.

5. Listen to and watch for abnormal noises or

actions. The machine should run smoothly

with little or no vibration or rubbing noises.

Children and visitors may be

seriously injured if unsuper-

vised around this machine.

Lock entrances to the shop

or disable start switch or

power connection to prevent

unsupervised use.

—Strange or unusual noises should be inves-

tigated and corrected before operating the

machine further. Always disconnect the

machine from power when investigating or

correcting potential problems.

6. Turn the machine OFF.

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SECTION 4: OPERATIONS

Operation Safety

Overview

The Model H8203 features a tapered CBN (cubic

boron nitride grinding wheel that sharpens twist

drill bits using a three-step process. The included

CBN grinding wheel sharpens HSS, TiN-coated,

and cobalt bits. An optional SDC 170 grinding

wheel (Page 19) sharpens carbide bits.

Damage to your eyes and lungs could result

from using this machine without proper pro-

tective gear. Always wear safety glasses and

a respirator when operating this machine.

Basic Controls

Below is a list of the basic controls on the Model

H8203. Use the list with Figure 8 to become

familiar with your drill sharpening machine.

Loose hair and cloth-

ing could get caught in

machinery and cause seri-

ous personal injury. Keep

loose clothing and long

hair away from moving

machinery.

Trimming Area

Grinding

Area

Angle

Scale

NOTICE

If you have never used this type of machine

or equipment before, WE STRONGLY REC-

OMMEND that you read books, trade maga-

zines, or get formal training before begin-

ning any projects. Regardless of the con-

tent in this section, Grizzly Industrial will

not be held liable for accidents caused by

lack of training.

ON/OFF

Switch

Calibrating Dial

Figure 8. H8203 controls.

Calibrating Dial: Matches drill bit with correctly

sized collet. Ensures drill bit is correctly posi-

tioned in the collet holder.

Trimming Area: Location where grinding wheel

thins the drill bit web.

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Angle Scale: Indicates the point angle to be

sharpened; the angle can be adjusted from 90º—

140º depending upon the workpiece material to

be drilled.

Lock Ring

Collet

Grinding Area: Location where the CBN wheel

grinds the drill bit point angle to the selected

angle.

ON/OFF Switch: Turns the machine ON or OFF.

Figure 9. Inserting collet into lock ring.

Calibrating Drill Bit

3. Thread the collet holder onto the lock ring two

turns for now, and insert the drill bit into the

collet holder as shown in Figure 10.

The following steps must be done to prepare the

drill bit to be sharpened.

To calibrate the drill bit:

Collet Holder

1. Use the chart below or the one on the collet

tray cover to select the appropriate collet for

your drill.

Metric Size

Fractional-

Inch Size

Collet No.

2.0-3.0

3.1-4.0

Less than ¹⁄8

8"-⁵/32"

Figure 10. Drill bit installed in collet holder.

4.1-5

¹¹/64"-³/16"

¹³/64"-¹/4

4. Turn the calibrating dial right until it stops at

the "0" position, then align the arrow on the

calibrating device with the number on the dial

that corresponds to the drill bit diameter.

5.1-6

6.1-7

¹⁷/64"-⁹/32"

¹⁹/64"-⁵⁄16"

²¹/64"-²³/64"

7.1-8

8.1-9

For example, turn the dial to "7" for a 7mm

diameter drill bit, as shown in Figure 11.

9.1-10

10.1-11

11.1-12

12.1-13

8"-²⁵/64"

10 9

¹³/32"-⁷/16"

²⁹/64"-¹⁵⁄32"

11 10

12 11

13 12

³¹/64"-¹⁄2

2. Insert the collet at a slight angle into the lock

ring, as shown in Figure 9.

Figure 11. Calibrating dial set for a 7mm drill bit.

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—If you are using a standard drill bit, find the

closest metric size. For example, turn the

dial to "8" for a ³/8" drill bit.

—If you are sharpening aircraft extension or

deep hole drill bits, select a number on the

dial that is double the drill bit diameter. For

example, set the calibration dial to "10" for

a 5mm aircraft extension drill bit.

5. Fully insert the collet holder with the drill bit

into the calibrating device, so the holder and

device are flush and the pin fits into the collet

holder notch as shown in Figure 12.

Figure 14. Drill bit positioned in calibrating

device, side view.

7. Thread the locking ring fully onto the collet

holder, then remove the collet holder and drill

bit from the machine.

8. Tug on the bit to verify that it is locked in the

Notch

collet.

—If the bit moves, use a smaller collet size

and repeat Steps 1-8.

9. The drill bit is properly calibrated when the

notch on the collet holder and the drill bit cut-

ting lip are parallel, as shown in Figure 15.

Figure 12. Collet holder notch aligned with

adjusting device pin.

6. Turn the collet holder clockwise until it stops,

push the bit forward as far as it will go into the

calibrating device, then turn the bit clockwise

until it stops, as shown in Figure 13 & 14.

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Figure 15. Cutting edge parallel to collet holder

notch.

Figure 13. Drill bit positioned in calibrating

device, top view.

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Setting Point Angle Front Grinding Area

The Model H8203 allows you to select a specific

point angle based on the type of material to be

drilled. For general purpose use, such as wood

and soft metal, set the point angle to 118º (see

Figure 16). Set the point angle at 135º or 140º for

drilling harder workpieces such as stainless steel,

or 90º-100º for drilling soft cast iron workpieces.

The grinding wheel adjusts the drill bit point angle

and taper relief angle in the front grinding area

(Figure 18).

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To adjust the point angle:

1. Determine the point angle of your bit.

—If you want to grind the same angle that is

already on your bit, match the bit with one

shown in Figure 16.

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Figure 18. Drill bit point angle.

135º

118º

90º

To reduce risk of fire or explosion from hot

metal or chips, do not operate machine near

flammable materials.

To grind the point angle:

Figure 16. Point angle examples.

1. Make sure the grinding wheel cover is

secured, turn the machine ON, and wait for

the machine to reach full speed.

—If you are not certain of the bit angle or

want to select a different point angle, base

the angle on the material softness or hard-

ness of your application.

2. Insert and rotate the collet holder into the

front grinding area so the notch on the collet

holder fits against the edge on the grinding

area flange, as shown in Figure 19.

2. Use the included hex wrench to loosen the

cap screw on the point angle scale (Figure

17).

Flange

Notch

Point

Angle

Scale

Figure 17. Point angle set to 118º.

3. Turn the scale to the desired angle and tight-

Figure 19. Collet holder notch parallel to

en the cap screw.

grinding area flange.

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Rear Trimming Area

NOTICE

You can ruin a drill bit by grinding it too

long or too forcefully. Frequently dip the

bit in water to cool it and retain its original

hardness. If the tip becomes blue or purple,

it may have overheated and be too soft to

use.

The grinding wheel grinds a back relief on stan-

dard and split point bits in the rear trimming area.

Adding back relief to a standard bit makes it more

efficient in removing material from a workpiece.

Some trial and error will be needed to determine

the correct amount of back relief, as shown in

Figures 21 & 22.

3. While pressing the collet holder forward

gently, rotate the drill bit back and forth, and

about every four seconds, dip the bit in water

to cool the tip. This will help prevent the tip

from overheating and softening too much.

Back Relief

4. Continue grinding until the machine stops

making grinding sounds.

5. Remove the collet holder and drill bit, rotate

them 180º, then reinsert the collet holder and

drill bit into the front grinding area.

Figure 21. Correct back relief for standard bit.

6. Repeat Steps 3 & 4.

Back Relief

7. Examine the point angle.

—If the point angle is even on both sides

of the bit, (Figure 16), and no unground

material remains, as shown in Figure 20,

the point angle is correct. Now, go to Rear

Trimming Area to grind a back angle.

Figure 22. Correct back relief for split point bit.

Note: It is not necessary to grind a back relief

on a standard bit. However, doing so will

ensure the bit cuts more efficiently.

To add back relief to a standard bit:

1. Loosen the cap screws (Figure 23) on the

rear trimming area and lower the set screw

to raise the adjusting block to its highest posi-

tion.

Adjusting

Block

Figure 20. No unground surfaces remain on bit

after point angle grinding (top view).

Set

Screw

—If the surface of the drill bit retains unground

material, try grinding the bit again, or use a

different point angle setting.

Cap

Screws

Notch

—If the point angle is not shaped evenly,

repeat Steps 1-6, using even pressure to

grind both sides of the bit.

Pins

Figure 23. Collet and bit inserted into rear

trimming area.

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2. Tighten the cap screws, making sure the cen-

ter of the rear trimming hole is over the edge

of the grinding wheel, as shown in Figure

24.

—If the back relief is not sufficient (Figure

25), continue lowering the adjusting block

until the back relief looks like the example

in Figure 21.

Back Relief

Center

Figure 25. Back relief on standard bit too small.

8. Remove the bit from the collet holder.

To create a split point bit:

Wheel

Edge

Figure 24. Rear trimming hole center over

grinding wheel edge (cover removed for clarity).

3. Make sure the grinding wheel cover is

secured, turn the machine ON, and wait for

the machine to reach full speed.

1. Follow Steps 1-7 for creating a back relief on

a standard bit.

2. Continue lowering the adjusting block, grind-

ing the drill bit on both sides, examining it,

and carefully adjusting the block down until

the back relief looks like the example in

Figure 22.

4. Insert the collet holder and bit into the rear

trimming area so the pins fit into the notch on

the collet holder as shown in Figure 23.

5. Press the collet holder and bit down, and

after about four seconds dip the tip in water.

Continue alternating between grinding and

cooling until the machine stops making grind-

ing noises.

Be careful not to lower the adjusting block too

far, or the point may oversplit, as shown in

Figure 26.

Note: The harder you press down on the

collet holder, the larger the back relief will

be.

6. Remove the collet holder and drill bit, rotate

them 180º, reinsert them into the trimming

area, and repeat Step 5.

Figure 26. Oversplit point.

3. Remove the bit from the collet holder.

To prevent getting burned during the next

step, do not touch the end of a freshly

ground bit, which may be hot.

7. Remove the collet holder and examine the

bit.

—If the back relief matches the one in Figure

21 you are finished.

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SECTION 5: MAINTENANCE

Cleaning

Always disconnect power

to the machine before

performing maintenance.

Failure to do this may

result in serious person-

Cleaning the Model H8203 is relatively easy. Use

a vacuum or brush to remove excess metal chips

from around the grinding and trimming areas and

inside the grinding wheel cover. Use the included

al injury.

cleaning brush (Figure 27) to clean the front

grinding and rear trimming shafts. Use a cloth to

remove remaining dust.

Schedule

For optimum performance from your machine,

follow this maintenance schedule and refer to any

specific instructions given in this section.

Daily/Weekly Check:

•

Clean chips from grinding/trimming areas

and inside grinding wheel cover.

Any other unsafe condition.

•

Monthly Check:

Figure 27. Cleaning rear trimming area.

•

Worn or damaged grinding wheel.

•

Loose fan.

Changing Grinding

Wheel

Drill Sharpening

Accessories

A CBN 170 grinding wheel for sharpening HSS,

TiN-coated, and cobalt bits is preinstalled in the

H8203. Replace this grinding wheel when it no

longer sharpens drill bits to your satisfaction. How

often you will need to replace the grinding wheel

depends upon how often you use the machine.

You can also install the optional SDC 170 grinding

wheel, which sharpens carbide steel bits.

The following accessories are available for the

Model H8203:

T20238—CBN Grinding Wheel

Sharpens HSS, Tin-coated, and cobalt bits.

T20239—SDC Grinding Wheel

Sharpens carbide bits.

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To replace the grinding wheel:

2. Remove the mounting screw, flat washer and

gasket, fan and grinding wheel, as shown in

Figure 28.

1. DISCONNECT THE SHARPENER FROM

POWER!

Grinding

Washer

and Gasket

2. Use the included hex wrench to loosen the

cap screw securing the grinding wheel cover

at the back of the grinder, then tilt the cover

away from the grinder (Figure 28).

Wheel

Fan

Cap

Screw

Figure 29. Removing grinding wheel.

3. Insert the new grinding wheel and reinstall the

components removed in Step 2 in reverse.

4. Secure the cover with the cap screw removed

in Step 1.

Figure 28. Removing grinding wheel cover cap

screw.

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SECTION 6: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-

ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical

Support at (570) 546-9663.

Troubleshooting

Motor & Electrical

Symptom

Possible Cause

Possible Solution

Machine does not 1. Plug/receptacle is at fault or wired incor- 1. Test for good contacts; correct the wiring.

start or a breaker

trips.

rectly.

2. Wiring is open/has high resistance.

2. Check for broken wires or disconnected/corroded

connections, and repair/replace as necessary.

3. Motor ON button or ON/OFF switch is at 3. Replace faulty ON button or ON/OFF switch.

fault.

4. Motor is at fault.

4. Test/repair/replace.

Machine stalls or is 1. Plug/receptacle is at fault.

1. Test for good contacts; correct the wiring.

2. Test by rotating shaft; rotational grinding/loose shaft

requires bearing replacement.

overloaded.

2. Motor bearings are at fault.

3. Motor is at fault.

3. Test/repair/replace.

Machine has vibra- 1. Motor or component is loose.

tion or noisy opera-

1. Inspect/replace stripped or damaged bolts/nuts, and

re-tighten with thread locking fluid.

tion.

2. Motor shaft is bent.

2. Test with dial indicator and replace motor.

Sharpening Operations

Symptom

Possible Cause

Possible Solution

Drill bit will not fit 1. Wrong size collet.

into collet.

1. Select a larger collet (Page 14).

Drill bit moves in 1. Collet lock ring not secured.

collet.

1. Secure lock ring (Page 15).

Drill bit moves even 1. Wrong collet size.

when collet ring is

1. Select correct collet size for drill bit.

secured.

Drill bit not sharp- 1. Bit not calibrated properly in collet.

1. Re-calibrate bit (Page 14).

ened to desired

point angle.

2. Point angle scale set to incorrect angle.

2. Adjust scale to correct angle (Page 16).

3. Bit sharpened unevenly or more pressure 3. Use even pressure to grind both sides of the bit.

applied to one side than the other in the

front grinding area.

Drill bit point angle 1. Collet holder and bit not fully inserted into 1. Insert collet holder with bit correctly (Page 14) into

or web not adjust-

ed.

front grinding or rear trimming area.

2. Bit not set correctly in collet holder.

3. Adjusting block set too high.

front grinding area and rear trimming area.

2. Reset bit in collet holder.

3. Lower adjusting block.

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Sharpening Operations Continued

Symptom

Possible Cause

Possible Solution

Drill bit point over- 1. Adjusting block set too low.

1. Regrind bit in front and rear areas, but do not lower

adjusting block so much.

split and chisel

edges have been

removed.

2. Adjusting block not secured; blocks sags,

allowing wheel to grind bit too much.

2. Secure adjusting block before grinding.

Amount of back 1. Adjusting block not low enough.

1. Lower adjusting block more (Page 18).

relief ground into bit

is too small.

Heavy grinding nois- 1. Too much pressure applied on drill bit dur- 1. Use less pressure (Page 15) and take longer to

es. Drill bit smokes

or tip has a black,

blue, or purple hue.

ing grinding.

grind the bit.

2. Tip is too hot and may have been softened 2. Try using the bit. If it dulls quickly the tip was soft-

too much.

ened.

Standard drill bit 1. Bit has no back relief grind.

point skips or

1. Follow instructions for grinding a back relief to

improve drill bit performance (Page 14).

does not cut into

workpiece.

2. Heel is higher than cutting lip or is curved 2. Regrind the point angle until it is correct. If the heel

up.

is curved up, follow instructions for grinding a back

relief.

Notch on collet 1. Point angle on bit may be different from 1. Select a point angle that matches or is closer to the

holder will not fit into

grinding area flange

edge. Bit retains

unground material

or part of prior angle

after grinding in front

area.

angle set on front grinding area.

existing drill bit point angle. Continue grinding the

point angle (if between 118° and 135°) until the old

angle is removed.

Back relief ground 1. Adjusting block center point not directly over 1. Set center of adjusting block over edge of grinding

into opposite cutting

edge.

grinding wheel edge.

wheel (Page 18).

Bits smoke or burn 1. The grinding wheel is dull.

consistently or it

takes a much lon-

1. Disconnect power and replace the grinding wheel

(Page 20).

ger time to grind the

point angle or back

relief than normal.

-22-

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Wiring Diagram

Figure 30. H8203 wiring components.

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Parts Breakdown

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LABEL PLACEMENT

101

103

100

106

105

102

108

109

107

104

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Parts List

REF PART #

DESCRIPTION

REF PART #

DESCRIPTION

PH8203001

PH8203002

PH8203003

PH8203004

PH8203005

PH8203006

PH8203007

PH8203008

PH8203009

PH8203010

PH8203011

PH8203012

PH8203013

PH8203014

PH8203015

PH8203016

PH8203017

PH8203018

PH8203019

PH8203020

PH8203021

PH8203022

PH8203024

PH8203025

PSB41M

BASE PLATE

PSBS24M

PSB03M

BUTTON HD CAP SCR M4-.7 X 10

CAP SCREW M5-.8 X 8

CAP SCREW M8-1.25 X 20

SWITCH

ANGLE BRACKET

SWIVEL SLEEVE

PSB03M

SPECIAL CAP SCREW

CALIBRATING DEVICE BASE

CALIBRATING PLATE

SPECIAL SET SCREW

COLLET HOLDER

LOCK RING

PSB14M

PH8203039

PH8203040

PH8203041

PH8203042

PH8203043

PH8203044

PH8203045

PH8203046

PH8203047

PH8203048

PH8203049

PH8203050

PH8203051

PH8203052

PSS51M

COLLET 1/8"

COLLET 5/32"

COLLET 3/16"

COLLET 1/4"

COMPRESSION SPRING

FLANGE

COLLET 9/32"

COLLET 5/16"

CLEANING BRUSH

MOTOR BRACKET

ADJUSTING BLOCK

FAN

COLLET 3/8"

COLLET 25/64"

COLLET 7/16"

COLLET 15/32"

GRINDING WHEEL CBN 170

MOTOR 110V, 1/6 HP

BALLAST

COLLET 1/2"

POWER CORD

STRAIN RELIEF

FOOT

SET SCREW M4-.7 X 8

FUSE 5A

CALIBRATING DEVICE COVER

GRINDING WHEEL COVER

MOTOR COVER

PH8203054

PH8203055

LIMIT SWITCH

100 PH8203100

101 PH8203101

102 PH8203102

103 PH8203103

104 PH8203104

105 PH8203105

106 PH8203106

107 PH8203107

108 PH8203108

109 PH8203109

READ MANUAL LABEL 2-3/4" X 1-1/2"

DISCONNECT POWER LABEL 2-3/4" X 1-1/2"

KEEP COVER CLOSED LABEL 2-3/4" X 1-1/2"

MACHINE ID LABEL

ANGLE SCALE LABEL

CALIBRATING DIAL LABEL

DRILL DIAMETER LABEL

ELECTRICITY LABEL

GRIZZLY GREEN TOUCH UP PAINT

BLACK TOUCH UP PAINT

HANDLE

CALIBRATING DIAL

CAP SCREW M4-.7 X 14

CAP SCREW M6-1 X 25

CAP SCREW M5-.8 X 14

CAP SCREW M4-.7 X 14

CAP SCREW M5-.8 X 12

CAP SCREW M5-.8 X 14

CAP SCREW M5-.8 X 10

SET SCREW M5-.8 X 8

PSB06M

PSB20M

PSB41M

PSB33M

PSB20M

PSB50M

110 PH8203MAN H8203 MANUAL 11/7

PSS31M

Safety labels warn about machine hazards and ways to prevent injury. The owner of this machine

MUST maintain the original location and readability of the labels on the machine. If any label is

removed or becomes unreadable, REPLACE that label before using the machine again. Contact

Grizzly at (800) 523-4777 or www.grizzly.com to order new labels.

-25-

H8203 Professional Drill Sharpening Machine

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WARRANTY AND RETURNS

Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from

the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,

negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty

and any and all warranties that may be implied by law, including any merchantability or fitness, for any par-

ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent

that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.

In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and

any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.

We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,

or consequential damages arising from the use of our products.

To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then

issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the

carton. We will not accept any item back without this number. Proof of purchase must accompany the

merchandise.

The manufacturers reserve the right to change specifications at any time because they constantly strive to

achieve better quality equipment. We make every effort to ensure that our products meet high quality and

durability standards and we hope you never need to use this warranty.

Please feel free to write or call us if you have any questions about the machine or the manual.

Thank you again for your business and continued support. We hope to serve you again soon.

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