Burr King 20 User Manual

MODEL 20

I

NSTRUCTION MANUAL

BURR KING MFG. CO., INC

1220 Tamara Lane

Warsaw, MO 65355

www.burrking.com

[phone] • 800-621-2748

Fax [phone]

BURR KING MODEL 20

DISC GRINDER

BURR KING MFG. CO., INC.

1220 TAMARA LANE

WARSAW MO 65355

WWW.BURRKING.COM

[phone]  [phone]

FAX [phone]

June, 2007

Burr King Manufacturing Company. Inc. warrants the below product to be free in material and workmanship. The period of warranty is 1 year
(90 days for vibratory bowls of 20 quart and lesser volume) from the date of purchase. No warranty is provided for products that have been
modified, abused, handled carelessly, where repairs have been made or attempted by others, or for freight damage. No warranty is provided for three
phase electric motors, cont rol lers, etc. when the motors, controllers are not protected by magnetic starters that were sup plied and installed by Burr
King Manufacturing Company. Inc. No other warranty, written or verbal is authorized by Burr King Manufacturing Company, Inc.

During the warranty period Burr King Manufacturing Company, Inc (or its authorized suppliers or agents) will replace or repair the below
product without charge if the product is found by Burr King Manufacturing Company, Inc. to be defective. To receive warranty services you must
contact Burr King Manufacturing Company, Inc. and receive authorization fir warranty service. Unless otherwise author i zed by Burr King
Manufacturing Company, Inc. Products (see * below) must be returned to the factory to receive warranty service.

*Motors, speed controllers, and certain other accessories are warranted by their respecti ve manufactures. To receive warranty service on these
items you must contact a brand label service center that supports the product in need of service. Burr King Manufacturing Company; Inc. will assist
you in locating a service center.

For the first thirty days after purchase, and when Burr King Manufacturing Company, Inc. authorizes warranty service, we will pay normal and
necessary surface freight charges both ways (except for items in *). After thirty days the customer is responsible for all freight charges. Where
possible Burr King Manufacturi ng Company, Inc. may elect to make on site service and/or repairs necessary to return the product to serviceable
condition.

To assure prompt warranty service it is necessary that you complete and return the below warranty information to Burr King Manufacturing
Company, Inc. please FAX or MAIL at your convenience.

Product model: _______________________ Serial number: _______________________
Date Purchased: ______________________ Purchased from: ______________________
Address: ____________________________ City: _______________________State/Prov: _________Postal code________

Your company name: _____________________________________________
Address: _____________________________City: _______________________State/Prov: __________Postal code________
Phone: _______________________________Fax: _______________________Email: _______________________________
Your name: ___________________________Title: _______________________

How did you learn about Burr King products?
Trade show___Web___Industrial Distributor ___Advertisement ___Other __________________________Which one:________________________
What is the intended use of this product? ______________________________________________________________________________________

Please indicate the general work types performed at you r company, check all that appl y
Fabrication___Machining___Casting__Molding___Welding___Finishing___Assembly___Research___Other___

Please indicate the primary product focus of your company; check all that appl y,
Aircraft/Missile___Automotive___Contract machine___Contract Fabrication___ Agricultural____Maintenance___ Recreational___
Job shop___Foundry___Construction___Arts___Orthopedic___Dental___Medical___Other_________________________________

Please tell us what we can do to improve our products
________________________________________________________________________________________________________________________
________________________________________________________________________________________________________________________

May we contact you? Yes___No___

Thank you for purchasing Burr King products!

:

:

Register online @

www.burrking.com

(

)

(

)

(

)

August 29, 2007

BURR KING MFG. CO., INC.

1220 TAMARA LANE

WARSAW MO 65355

WWW.BURRKING.COM

660

438-8998 

FAX

660

LETTER OF AUTHENTICITY

800

621-2748

438-8991

This letter is to certify that all Burr King Belt grinders, Disc
grinders, Polishing machines Vibra King Chambers and Bowls are
manufactured and assembled in the United States of America.

Tariff number 847990 criterion A )

(

Don Mac Carthy
President

See our catalog at www.burrking.com contact us at [email protected]

BURR KING MFG. CO., INC.

1220 TAMARA LANE

WARSAW MO 65355

WWW.BURRKING.COM

[phone]  [phone]

FAX [phone]

February 2005

OPERATOR, and OPERATING AREA SAFETY

Subject equipment includes Grinders, buffers, polishers, and other rotating equipment. Serious injury
or death may occur if minimum safety precautions are not understood, and obeyed by operators and
those other persons who may be in the immediate vicinity of the subject equipment. Persons who
operate, or are in the immediate vicinity of the subject equipment must be properly trained in, and
use, minimum safety precautions and procedures for such machinery.

Minimum safety requirements to operate, or work in the immediate vicinity subject equipment:

1. Read and understand all operating instructions, manuals, labels, and other information provided with the
equipment.

2. Install the equipment according to manufacturer’s instructions.

3. Securely bolt the equipment to a rigid, structurally sound mounting surface.

4. Use and wear proper eye and face protection.

5. Use and wear proper protection for the body, hands, fingers, feet, and leg s.

6. Review and understand all machine guards, adjustments, and points of exposure to potential injury.

7. Do not remove, tamper with, or otherwise alter, equipment guards, and other safety features.

8. Insure the machine is adjusted, and remains adjusted according to manufacture’s requirements.

9. Maintain the equipment in good operating condition.

10. Have another person who is knowledgeable in proper and safe operation of the subject equipment
demonstrate proper and safe operation to all operators, and to those persons who might be in the immediate
vicinity of the subject equipment.

11. Use work piece holding devices when ever possible that diminish the possibility that persons will come
in contact with moving machine pieces, or spark/debris output from the machine.

12. Use spark and debris arresting apparatus. Such apparatus should be connected to the machine so as to
contain dust and debris that is generated, and to suppress sparks thereby limiting human inhalation risk, and
the risk of fire or explosion.

13. Use appropriate inhalation apparatus to protect person from ingestion and/or inhalation of sparks, debris,
smoke, particulates, etc.

14. Avoid mixing different metals, alloys, and materials. To mix such materials might create a fire or
explosion hazard.

15. Protect persons from work pieces, particulates, etc. that could be forcibly ejected from the machine. For
example, a buffing wheel or grinding belt can “grab” a work piece while the work piece is being buffed,
polished, ground, or otherwise conditioned, resulting in forcible ejection toward the operator or those in the
vicinity of the machine. The use of leather aprons, gloves, and eye shields are examples of protective gear
that may be effective. In general do not grind, buff, or otherwise engage the traveling belt, wheel, or disc
surface with the work piece pointing into the direction from which the belt, wheel, or disc is traveling.
However, if you choose to do so be aware the work piece may lodge in the traveling belt, wheel, or disc and
be forcibly, and dangerously ejected.

16. Do not operate this machine if the gap (nip point) between a moving belt, wheel or disc and the work
support surface exceeds 1/8 inch.

17. Do not operate this machine if the gap between the moving abrasive belt, disc or wheel and the adjacent
face
page 1 continued on next page

See our catalog at www.burrking.com Contact us at [email protected]

Continued from page 1

of the work rest (or table) will permit passage of the work piece through the gap (nip point). Note, however,
that certain alloys such as titanium may create conditions where grinding debris can accumulate in a tight gap
creating a potential fire hazard. When in doubt consult with your safety officer. Failure to observe this
warning may result in the work piece or other item being caught in this gap, and/or being forcibly ejected.
Failure to heed this warning may cause serious bodily harm to the operator and/or bystanders. NEVER USE

THIS EQUIPMENT IF YOU ARE NOT PROP ERLY TRAINED IN ITS OP ERATION and/or SAFE
USE! IF IN DOUBT STOP and ASK FOR GUIDANCE!

18. Never position the work rest table at an acute angle between the top of the work rest table and the moving
belt or wheel. Doing so will create “nip point” that can cause serious injury should an operator body part
become entangled (pulled into) the nip point created by this acute angle.

19. Do not operate the equipment, or allow others to operate the equipment without proper training in these
and other rotating machinery safety requirements.

20. Do not perform maintenance on the equipment unless you are fully qualified to do so, and understand all
necessary safety and operating requirements.

21. Do not leave the machine unattended while it is running.

22. Correct equipment or safety problems immediately. Do not operate the equipment when it requires
maintenance, or correction.

23. Install and use high quality abrasive belts, wheels, discs, media, etc., as appropriate to your machine.
Understand and follow the operating requirements provided by the manufacturer of these materials.

Rotational Speed Warning, Contact Wheels

Scope: Contact wheels manufactured by Burr King Manufacturing Company, Inc., which have rubber or
urethane tires. Examples include but are not limited to stock codes 202, 302, 402, 502,702, 802, 902, 1002,
1202 and variants. Variants have stock codes that begin with the base number; i.e. 802-S-55 is an 802
variant.

Users are warned not to exceed the below listed revolutions per minute (RPM) on the subject wheels. Failure
to heed this warning may lead to tire de-bonding, fragmentation, or other mechanical failure. Such failures
may cause serious personal injury to operators or bystanders, and/or cause property damage. All Burr King
products are warranted for various time periods to be free of material and/or workmanship defects. Burr King
Manufacturing Companies standard warranty policy is summarized as follows for contact wheels. 1 year
from date of purchase if mounted on a Burr King machine purchased on the same date or 90 days if
purchased as a spare or replacement part. Our warranty does not apply to wheels that are mounted on
products not manufactured by Burr King Manufacturing Company, Inc. Users who mount Burr King
manufactured contact wheels on product not manufactured by Burr King Manufacturing Company, Inc. do so
at their own risk and assume all liability for having so mounted the contact wheel(s).

Remember good safety practice demands guarding to protect operators and bystanders from wheel failure
and/or debris. Never use the subject contact wheels without proper guarding that meets commonly accepted
safe practice. See OSHA, U/L, CSA, CE, ISO and other respected

Stock code
Contact Wheel Maximum Safe RPM

202, 302 10000

402, 502, 702 802 4400
902, 1002 2200
1202 1600

Page 2, continued on page 3

safety standards.

See our catalog at www.burrking.com Contact us at [email protected]

Continued from page 2

Occupational Noise Exposure

Burr King products produce levels of noise consistent with their intended purposes. The level and spectral
content of noise produced is dependent on the product type, the degree that the product is maintained in
proper operating condition, the abrasive/media and accessories used, the specific application, and the
surrounding environment. Noise levels produced by various Burr King grinders and polishers, as measured at
the Burr King factory, range from 80 to 93 decibels. Product operators and persons in the immediate product
vicinity should be protected from excessive noise does levels as prescribed in OSHA regulation 29, piece

1910.95 titled “Occupational Noise Exposure”.

ROTATING EQUIPMENT CAN BE DANGEROUS TO OPERATORS AND THOSE WHO MAY BE
IN ITS IMMEDIATE OPERATING VICINITY. IT IS THE ABSOLUTE AND DIRECT
RESPONSIBILITY OF PURCHASERS, MANAGERS, AND OPERATO RS OF THIS EQUIPMENT
TO UNDERSTAND AND OBEY THE FOREGOING MINIMUM
REQUIREMENTS. IF YOU HAVE QUESTIONS OR SAFETY CONCERNS REGARDING
OPERATING THE SUBJECT EQUIPM ENT PLEASE CALL YOUR AUTHORIZED BURR KING
DISTRIBUTOR, OR BURR KING MANUFACTURING AT 1-800-621-2748. YOUR SAFETY IS
OUR FOREMOST CONCERN!

Burr King Manufacturing disclaims any and all responsibility for injuries, damage, loss of income, or other
adverse consequence as might be incurred by purchasers, managers, and operators of this equipment.

OPERATING SAFETY

Page 3

is last page

See our catalog at www.burrking.com Contact us at [email protected]

BURR KING MFG. CO., INC.

1220 TAMARA LANE

WARSAW MO 65355

WWW.BURRKING.COM

[phone]  [phone]

FAX [phone]

March 2005

Installation/Operating instructions for the model 20 disc grinder

The model 20 disc grinder is a three horse power heavy duty disc grinder intended for de-burring, shaping,
beveling, metals, plastics, woods, and other materials using a 20 inch PSA abrasive disc that rotates at up to
1750 RPM. Various models are available that include fixed disc speed, fixed disc speed with disc brake, and
electronic variable speed with integrated disc braking.

Models with disc brakes are recommended. The heavy rotating disc and connected motor armature
will rotate for several minutes after power is removed. Should an unsuspecting person touch the
rotating disc serious injury may occur. Do not use this machine if it does not include a disc brake and
your operating needs are such that personnel could be exposed to this hazard.

Prior to operating the model 20 please take time to do the following:

1. Insure that you have received all of the items that you ordered. Compare the packing slip with your
purchase order, and of course with the physical items received.

2. Verify that there is no obvious shipping damage. If shipping damage is discovered notify the freight carrier
of your intention to file a freight damage claim. They will assist you.

3. Verify that the AC power that is identified on the machine as received matches the AC power that you
intend to operate the machine with. Do not modify the machine’s wiring without first contacting your
distributor and/or Burr King Manufacturing.

4. Do not modify or defeat any AC wiring safety feature.

5. Verify that you have received a warranty card, parts lists, catalog, and
Safety Instructions.

6. Complete the warranty card and return it to Burr King Manufacturing.

7. Verify that all guards are in place and functional.

8. Insure that the grinder is located in an area that provides clear access to the machine such that operators
have safe and unobstructed access to the machine. The work place should be free from floor obstructions, trip
points, and other faults that may reduce operator safety.

9. Burr King recommends that all three-phase installations include a magnetic starter.
protect motors from “single phasing”, overheating, etc. thereby reducing the risk of damage to the equipment
and/or fire hazard to your facility. Note that models with variable speed control supplied by Burr King
include the foregoing safety features without the addition of a magnetic starter.

10. Insure that the model 20 AC power source is properly sized, and properly fused. In general, the three
horse power motor that is standard will draw 8 or 4 amperes with a 220v or 440v three phase supply. You
should consult a competent electrician for the correct electrical feed arrangements, or you may call Burr King
Manufacturing for guidance.

Functional operating instructions for the model 20 belt grinder
The model 20 was fully tested and verified to comply with requirements prior to shipping from the factory.
No adjustments should be necessary. You should perform the following steps:

1. Securely bolt the machine to the floor. Note that the pedestal base has four holes that are sufficient for ½

inch anchor bolts. Do not use anchor bolts that are less than 3/8 inch in diameter and/or that do not
provide for at least 2 ½ inches of depth grip in secure concrete.

Operator, and Operating Area

Magnetic starters

See our catalog at www.burrking.com Contact us at [email protected]

1

2. Verify that the disc spins freely. Note that on models with motor brakes the disc will be locked. At the

rear of the motor you will find a control that when rotated will free the brake to rotate. This control
should be left in the locked position for normal operation of the machine.

3. Verify that the gap (nip point) between the PSA abrasive disc and the table edge next to the front of the

disc is less than 1/8 inch. This gap is set at the factory to comply with this requirement. The gap should
not change unless table erosion occurs, maintenance to the machine is attempted, or damage has
occurred.

4. To install or remove an abrasive disc push the disc guard to its rear most position. Install the PSA disc

taking care to position it concentric to the aluminum backing disc.

Note: To remove or replace a PSA disc it is necessary to lower the disc grinder table clear of the aluminum
backing disc. To do this first unlock the table by loosing the table clamp at the rear of the machine. Lower or
raise the table by rotating the large hand wheel to the right of the table.
Note: PSA abrasive discs can leave a residue on the aluminum backing disc. Normally this can be cleaned
with isopropyl alcohol and a soft rag.

Note: Do not spin or otherwise force the table mechanism to the end of travel up or down. To do so
may shear keepers, shafts, or gears inside the table gear box. Always secure the table with the table
locking clamp before using the model 20 grinder.

5. As before ass ure that the disc spins freely.

6. Loose the table locking knob to the left of the table. Using the small hand wheel to the right of the table

verify that the table can be angled in respect to the disc. Always re-lock the table.

Grinding modes

1. The direction of disc rotation determines the point of grinding.

Never grind on the side of the disc where the movement of the abrasive disc is upward from the table.
Doing so may create an operator hazard from debris, and or ejected work pieces.

2. Supported work: Alway s use work piece holding devices to minimize the risk of operator contact with

the rotating abrasive disc.

3. For controlled angle grinding tilt the table down to any angle from 0 to 45 degrees. Read the angle on the

indicator found on the small hand wheel. Note: Use of a precision protractor is recommended where
angles of plus/minus 2 degrees are required.

4. Use the available miter attachment for grinding compound or other angles.

5. Use reduced disc speed (variable speed models) for many materials where abrasive speed is critical. The

abrasive speed at the outer disc perimeter is approximately 9000 SFPM at 1750 RPM.

Note: Never grind with the table tilted in an acute angle (up) in respect to the disc while holding the
work piece by hand. The disc may seize the part stall the machine, and or injure the operator. This
operating mode should only be used where the work part is firmly secured to the table as in bolting,
clamping, etc. and the operator is well protected from potential injury.

Note: Never position work pieces at an acute up angle with disc with the table at any angle.
Doing so may lead to serious operator or bystander injury.

Note: Never grind material that is less than ¼ inch thick in its smallest dimension with out the use of
work piece holding devices that protect the operator and bystanders. Doing so may lead to serious
operator or bystander injury.

Beware that thin (less than ¼ inch) material can lodge in the gap between the table and the disc
creating a potential for serious injury, and/or property damage.

Maintenance for the model 20

ALWAYS DISCONNECT THE MACHINE FROM ITS AC POWER SOURCE PRIOR T O
CHANGING THE PSA DISC OR PERFORMING MACHINE MAINTENANCE.

1. Vacuu m or otherwise remove dust and debris build-up from the machine.

See our catalog at www.burrking.com Contact us at [email protected]

2

2. Lightly grease the gears inside the table rotator and table gear box every 6 months or when ever

movement seems restricted.

3. Apply a light coat of thin machine oil to the central column every 30 days.

4. Keep the dust channel under the disc and any connected dust conduits free from dust build up.

5. Use spark arrest devices to minimize the risk of fire or explosion.

6.

Remember for operator safety and the continued effectiveness of your
model 20:

Read and understand these instructions and the included “Operator
and Operating Area Safety” instructions.

Do not operate the model 20 until you are fully trained to do so safely.
Do not defeat the safety guards and other safety provisions of the model 20.
Do not operate the model 20 with safety guards removed, or counter to these instructions.
Do not reach inside the safety guards while the machine is running.
Do not use fluids in your grinding process unless your model 20 is designed for liquid operation
(NEMA 4, 4X). To do so may create an electrical safety hazard. Only specially ordered model 20
grinders are “liquid safe”.
Do not use your model 20 to grind/polish explosive materials unless it is equipped with explosion proof
electrical devices and motor.
Do not mix alloys in your grinding. To do so may create an explosion/fire hazard.
Do not modify the model 20 other than securing holding devices to the work table.
Do use eye, hand, face, arm, leg, feet and body protection that is adequate to protect against flying
debris, forcibly ejected work pieces, etc. Note: Consult with your safety officer in regard to your
facilities policy regarding attire such as gloves when using rotating equipment.
Do train operators and others in safe operating practices.

Post these or equivalent instructions such that they are available for
ready operator reference.

Burr King Manufacturing can help you with problem solutions, and/or answers to your questions. Please call your Burr
King distributor first. If you can not reach satisfactory conclusion please call the Burr King factory, telephone 1-660­438-8998.

See our catalog at www.burrking.com Contact us at [email protected]

3