BURR KING 720 User manual

BURR KING MFG. CO., INC
1220 Tama a Lane
Wa saw, MO 65355
www.bu king.com
[phone] • 800-621-2748
Fax [phone]
BURR KING MODEL 720
TWO WHEEL PROBE GRINDER
MODEL 720
INSTRUCTION MANUAL
MANUAL OR AIR TENSION
Model 16110A
Air Tension System
Model 16110M
Manual Tension System
2021
Design

BURR KING MFG. CO., INC.
1220 TAMARA LANE
WARSAW MO 65355
WWW.BURRKING.COM
[phone]
s
[phone]
FAX [phone]
October 2021
Burr King Manufacturing Company. Inc. warrants the below product to be free of defects 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, controllers, etc. when the motors, controllers are not protected by magnetic starters
that were supplied 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 for warranty service. Unless otherwise authorized 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 respective manufacture. 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 Manufacturing 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?
Tradeshow___Web___Industrial Distributor ___Advertisement ___Other __________________________Which one:________________________
What is the intended use of this product? ______________________________________________________________________________________
Please indicate the general work types performed at your company, check all that apply:
Fabrication___Machining___Casting__Molding___Welding___Finishing___Assembly___Research___Other___
Please indicate the primary product focus of your company; check all that apply,
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Please tell us what we can do to improve our products:
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Thank you for purchasing Burr King products!
Register online @
www.burrking.com

BURR KING MFG. CO., INC.
1220 TAMARA LANE
WARSAW MO 65355
WWW.BURRKING.COM
[phone]
s
[phone]
FAX [phone]
October 18, 2021
LETTER OF AUTHENTICITY
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 MacCarthy
President

M720 Important Safety Instructions
OPERATOR, and OPERATING AREA SAFTEY
READ AND SAVE ALL INSTRUCTIONS FOR FUTURE REFERENCE
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.
1. READ ALL INSTRUCTIONS
• Read and understand all operating instruction, manuals, labels, and other information provided with the equipment.
2. KEEP WORK AREA CLEAN
• Cluttered areas and benches invite injuries.
3. CONSIDER WORK AREA ENVIRONMENT
• Do Not expose power tools to rain
• Do Not use grinder in damp or wet locations.
• Keep work area well lit.
• Do Not use grinder in presence of flammable liquids or gases
4. GUARD AGAINST ELECTRICAL SHOCK
• Prevent body contact with grounded surfaces. For example: pipes, radiators. Disconnect from power
source when not in use. Never use if electrical cord is damaged or wet. Always keep electrical cords clear of
rotating parts and belt while in motion. Electrical installation shall be in accordance with applicable codes
and regulations.
5. KEEP CHILDREN AWAY
• Do Not let visitors contact tool or cord
• All visitors should be kept away from work area
6. DRESS PROPERLY
• Do Not wear loose clothing or jewelry.
• Non-Skid footwear is recommended when working with equipment.
• Wear protective hair coverings to contain long hair.
• Wear proper attire to protect eye, hand, face, arm, leg, feet and body that is adequate to protect against flying debris,
forcibly ejected work pieces, broken abrasive belts, ect.
7. USE SAFETY GLASSES
• Everyday eyewear does not feature impact resistance lenses, and they are NOT safety glasses
8. WEAR DUST MASK
• Some dust created by grinding activities may contain chemicals known to cause cancer, birth defects or other harm.
Provide adequate ventilation.
WARNING!
WHEN USING ELECTRIC TOOLS, BASIC SAFTEY PRECAUSTIONS
SHOULD ALWAYS BE FOLLOWED TO REDUCE RISK OF FIRE,
ELECTRIC SHOCK AND PERSONAL INJURY.

9. SPARK AND DEBRIS ARRESTING APPARATUS
• To further reduce the exposure you may wish to connect an apparatus to the machine to contain dust and debris/spark
arresting device to suppress sparks thereby limiting human inhalation risk, and risk of fire or explosion
10. KEEP ALL GUARDS IN PLACE AND PROPERLY ADJUSTED
• Keep all guards in place and in working order.
• Do not reach inside the safety guards while the machine is running.
• 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 operators body part become entangled
(pulled into) the nip point created by this acute angle.
• Do not operate this machine if the gap between the moving abrasive belt, disc or wheel and the adjacent face 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 properly trained in its
operation and/or safe use. If in doubt stop and ask for guidance.
11. SECURE THE M720
• Bolt the machine securely to the stand or other stable surface to avoid tipping when unit is in operation.
12. BEFORE SERVICING
• Disconnect the grinder from the power source.
13. NEVER LEAVE TOOL RUNNING UNATTENDED
• Turn power off. Don’t leave until the grinder comes to a complete stop.
14. DO NOT USE NEAR FLAMMABLE MATERIALS
• Sparks from the grinder can cause fires.
15. HOLD MATERIAL TIGHTLY
• Always hold the work piece firmly when grinding and apply steady pressure.
• 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.
16. DO NOT USE DAMAGED WHEELS OR BELTS
• Wheels or belts that show wear should be discarded.
17. KNOW WHAT YOUR GRINDING
• Avoid mixing different metals, alloys, and materials. To mix such materials might create a fire or explosion hazard
• Exotic materials such as titanium, magnesium, and other chemically active materials will present fire and explosion
hazards that if ignored can result in grave personal injury and/or property damage.
• Consult with your material supplier or other qualified expert regarding the materials on which you wish to work.
18. KEEP MACHINE MAINTAINED
• Ensure wheels are in good condition and are free from damage. If damaged parts are found, immediately discontinue
use of the machine and order replacement parts.
• Never perform maintenance on the machine with its electrical power source connected.
19. 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 levels as prescribed in
OSHA regulation 29, piece 1910.95 titled “Occupational Noise Exposure”.
20. TRAINING
• Do train operators and others in safe operating practices
• Post these instructions so they are available for future reference and new operators.
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 OPERATORS OF THIS EQUIPMENT
TO UNDERSTAND AND OBEY THE FOREGOING MINIMUM OPERATING SAFETY
REQUIREMENTS. IF YOU HAVE QUESTIONS OR SAFETY CONCERNS REGARDING
OPERATING THE SUBJECT EQUIPMENT PLEASE CALL YOUR AUTHORIZED BURR KING
DISTRIBUTOR, OR BURR KING MANUFACTURING AT 660-438-8998. 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.

October 2021
Operating instructions for the Model 720 Probe Grinder
The Model 720 belt grinder is a two-wheel path belt grinder that uses a 2 x 72-inch continuous loop abrasive
belt. For maximum effectiveness, and operator safety use abrasive belts manufactured by well-respected
abrasive manufacturers.
* Use abrasive belts that are the proper size and type for your machine.
* Do not use abrasive belts that are old and excessively worn.
* Do not use abrasive belts that use lap splice joints. This type of belt is prone to separate. It also may tend
to snag your work and create a safety hazard. It may also perform poorly.
Your Model 720 may be fixed speed (single or three phase), or variable speed single phase depending on
the configuration ordered. Additional your Model 720 may have manual spring loaded tensioning system or a
pneumatic/air tension system. The pneumatic version requires clean air in addition to your electrical
requirements. The Model 720 has a 4” O.D. integrated dust collection adapter that will connect to a dust
collection system with a recommended minimum capacity of 500 CFPM.
●Use wheels that are the proper size and type for your machine.
●Do not use wheels or belts that are old and/or excessively worn.
●Do not operate in a reverse rotation. The abrasive belt must rotate CCW when viewed from the right side
(opposite of the motor).
●Do not exceed the maximum recommended wheel speed (see speed chart for recommended speeds included in this manual.)
●Do not use your Model 720 with the factory-supplied guards removed, or with the belt guard door open.
The model 720 will accept front wheels (contact wheels) that are from 9/16 inch in diameter to 4 inches in
diameter. The wheels maybe inboard or outboard bearings. The belt width may be ½, 1, or 2 inches. The belt
length is always 72 inches and the belt speed is independent of the contact wheel size. Note that the front wheel
attachment is secured to the machine probe by two ¼-20 Allen cap bolts Loosen and remove these bolts to
remove the adapter that secures the wheel to the extension arm.
3/16” hex head Allen required to loosen and remove these bolts.

Prior to operating the Model 720 please take time to do the following:
1. Ensure 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. Securely bolt the machine to a table, pedestal, or other mounting location. The base of the model 720
has 4 mounting holes for this purpose. Use grade 5 or better bolts for mounting the machine. If the
machine is mounted with the motor shaft other than horizontal use 5/16 bolts or larger. Otherwise use ¼
inch or larger bolts.
4. Verify that the AC power that is identified on the machine matches the AC power that you intend to
operate the machine. In the case your machine is a variable speed or uses a magnetic starter please verify
input voltage and do not reference the motor requirements. Do not modify the Model 720 wiring or
other electrical controls without the advice of the factory or a competent electrician.
5. Do not modify or defeat any AC wiring safety feature. In example, do not remove the grounding pin on
the AC plug.
6. Read the Operator, and Operating Area Safety Instructions carefully. Ensure that all persons who will
operate the Model 720, or who will work in the vicinity of the Model 720 read, understand, and comply
with these instructions.
7. Ensure that the Model 720 is located in an area that provides safe access to the machine such that
operators have clear and unobstructed working space. The workplace should be free from floor
obstructions, trip points, and other faults that may reduce operator safety.
8. Ensure that the Model 720 AC power source is properly sized for wire, and properly fused. All wiring,
circuit breakers, fuses, and connections must conform to national electrical and local codes.
9. All three phase electrical installations must include a magnetic starter, unless equipped with a variable
frequency drive. Magnetic starters protect motors from “double phasing”, overheating, etc. thereby
reducing the risk of damage to the equipment and/or fire hazard to your facility. Three phase motors are
not warranted if used without a magnetic starter or other suitable device such as a VFD.
10. Pneumatic tensioning systems require a clean air source of at least 45 PSI to the air regulator supplied
with the Model 720. Note: The air controls that are mounted in the base of the Model 720. The
function of each control is described by control labeling. With these controls you can retract the front
wheel to remove and install abrasive belts, adjust the speed of probe extension, and adjust the speed of
probe retraction. Ordinarily you will not need to adjust the latter two controls.
CAUTION: The abrasive belt to wheel interface will close quickly so KEEP CLEAR OF THESE
INTEFACES WHEN OPERATING THE AIR CONTROLS. NEVER OPERATE THE AIR
CONTROLS WHILE THE ABRASIVE BELT IS IN MOTION. FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY LEAD TO BODILY INJURY.

Functional operating instructions for the Model 720 Probe Grinder
Your Model 720 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. Machine securely bolted to its table, pedestal, and/or floor point connect the AC power to its source.
2. Ensure the wheels are firmly tightened to the spindle. Insure that the Model 720 belt operates CCW
when viewed from the right side of the machine.
3. Engage the motor. The abrasive belt should rotate smoothly in a CCW direction with the front face of
the finishing wheel moving toward the floor. If either of these conditions are not met turn the machine
OFF immediately.
4. If the Model 720 runs in reverse direction you must correct this by changing the main drive motor
rotation direction.
FIRST DISCONNECT THE MACHINE FROM ITS AC POWER SOURCE. A COMPETENT
ELECTRICIAN SHOULD PERFORM ALL ELECTRICAL WORK ON THE MODEL 720.
If your Model 720 is equipped with variable speed control the wheel speed can be adjusted using the speed
control that will be mounted on the motor or on a separate control box.
Operating instructions for the Model 720 Probe Grinder – Pneumatic Tension Version
Prior to daily operation follow the steps listed below:
1. Verify the machine is in good working order. Check for unsafe conditions or damaged parts and repair
or replace prior to operation. Tag out machine if any issues cannot be resolved.
2. Clean work area and machine. Start with a clean area around the machine
3. Check abrasive belt for damage. Replace if needed.
4. Using the air pressure regulator control located on the
incoming air filter assembly adjust the air pressure for air
pressure delivery of from 20- 50 PSI. The greater the air
pressure, the greater the belt tension.
11. Open the guard door, RELEASE the probe and install the
abrasive belt. Center the belt on the wheels. Keep clear of
the belt and wheels and ENGAGE the probe. The probe will
move outward and place the belt under tension. Note: The
air controls that are mounted in the base of the Model 720.
The function of each control is described by control
labeling. With these controls you can retract the front wheel
to remove and install abrasive belts, adjust the speed of
probe extension, and adjust the speed of probe retraction.
Ordinarily you will not need to adjust the latter two controls.
5. Engage the motor by placing the ON/OFF switch to ON. The belt should rotate smoothly in a CCW
direction about the machine wheel belt path as you face the left side of the machine (guard door). If
either of these conditions are not met turn the machine OFF immediately.
a. If the abrasive belt does not remain centered on the contact wheel adjust belt tracking by using the
knob on the left side of the probe. Adjust this screw either CW or CCW as required to center the belt
on the belt track. Once this control is adjusted it will seldom require re-adjustment.
b. If the machine belt tensions, and tracks properly, but has excessive vibration turn the machine OFF
and call the Burr King factory for assistance.

Operating instructions for the Model 720 Probe Grinder – Manual Tension Version
Prior to daily operation follow the steps listed below:
1. Verify the machine is in good working order. Check for
unsafe conditions or damaged parts and repair or replace
prior to operation. Tag out machine if any issues cannot
be resolved.
2. Clean work area and machine. Start with a clean area
around the machine.
3. Check abrasive for damage. Replace if needed.
4. Belt tension is achieved by using the handle on the right
side of the machine. To apply belt tension, pull the
handle towards the front of the machine. To release
tension, pull forward to release the pressure on the pawl,
then press the black button and push handle to the rear to
release belt tension.
5. Open the guard door, RELEASE the probe and install the
abrasive belt. Center the belt on the wheels. Keep clear of
the belt and wheels and ENGAGE the probe by using the
procedure outlined above. The probe will move outward
and place the belt under tension.
6. Engage the motor by placing the ON/OFF switch to ON.
The belt should rotate smoothly in a CCW direction about
the machine wheel belt path as you face the left side of
the machine (guard door). If either of these conditions are
not met turn the machine OFF immediately.
a. If the abrasive belt does not remain centered on the contact wheel adjust belt tracking by using
the knob on the left side of the probe. Adjust this screw either CW or CCW as required to center
the belt on the belt track. Once this control is adjusted it will seldom require re-adjustment.
b. If the machine belt tensions, and tracks properly, but has excessive vibration turn the machine
OFF and call the Burr King factory for assistance.
TIP: Nose wheel specifications
Your M720 can accept wheels that have internal or external bearings. Internal and outboard
bearings should be limited in speed and force applied due to small size. Outboard bearing
wheels or external bearing wheels allow for wheels as small as 3/16” and use much larger
bearings. Small deep groove bearings are capable of RPMs in excess of 50,000 RPM, but
load applied on a small bearing must be observed. By limiting speed and applied force
bearings will last longer. Use the largest wheel possible for your application for best wheel
and bearing life. See small wheel chart in this manual for recommended speeds.

Important note about small nose wheel diameters VS motor speed
The Model 720 is available in fixed and variable belt speed models. The drive wheel of the fixed speed model
turns at 3450 RMP, which is a standard electric motor speed. Using nose wheels smaller than 1½in diameter is
not recommended on fixed speed models as the resultant nose wheel rpm may exceed the speed rating of the
nose wheel bearings thus shortening wheel life.
Variable speed motor control allows reduction in drive wheel speed thereby reducing the stress on small
diameter wheels. For longer nose wheel service life use the following relationships:
Nose wheel diameter (inches)
Variable speed % of maximum
0.5 or less
25%
0.6 to 1.0
33%
1.1 to 1.5
75%
1.6 and larger
100%
The Model 720 will accept nose wheels to 4 inches in diameter.
TIP: Pressure
Avoid excessive pressure when small wheels with small bearings. Excessive pressure causes
premature failure of bearings. Instead of greater pressure, try a belt with more aggressive
grit to get the job done using less force.

Maintenance procedures for the model 720
FIRST DISCONNECT THE MACHINE FROM ITS AC POWER SOURCE.
* Routinely vacuum or otherwise remove dust and debris build-up from the machine and the machine belt track.
* Routinely inspect for loose screws and other hardware. Tighten as required.
* Routinely inspect the air pressure assembly bowls for water/oil build up and drain as required using the
facilities provided.
* There are no other maintenance actions required. All bearings are sealed for life and require no additional
lubrication.
------------------------------------------------------------------------------------------------------------
Remember for operator safety and the continued effectiveness of your model 720:
Do not defeat the safety guards and other safety provisions of the model 720.
Do not operate the model 720 with the safety guard open or the contact wheel guard/platen assembly (or internal grinding
attachment) removed.
Do not reach inside the safety guards while the machine is running. To do so is hazardous.
Do not use fluids in your grinding process unless your model 720 is designed for liquid operation (NEMA 4, 4X). To do so may
create an electrical safety hazard.
Do not use your model 720 to grind/polish explosive materials such 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 hazard.
Do not use stone or vitreous wheels on the model 720. To do so will create an operator safety hazard.
Do use eye, hand, face, arm, leg, feet and body protection that is adequate to protect against flying debris, forcibly ejected
work pieces, broken abrasive belts, etc.
Do train operators and others in safe operating practices.
Post these or equivalent instructions such 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 cannot reach satisfactory conclusion please call the Burr King factory, telephone [phone].

58
45
60
55
50
52
37
34
31
6
61
5
4
11
42
41
15
10
33
1
46
17
51
53
48
49
30
14
12
21
35
13
20
39
32
9
62
36
29
19
18
29
30
40
8
16
26
27
39 38
44
28
3
22
23
59
47
56
5754
39
2
24
25
7
43
MODEL 720M EXPLODED VIEW
JULY 2020

ITEM
NO.
PART NUMBER DESCRIPTION QTY.
1 941 BASE-MACHINE 1
2 720 MOTOR MOTER-CALL FACTORY 1
3 7200-2 FRAME-MAIN 1
4 7201-5 ARM-MAIN SLIDE 1
5 7201-6 PIVOT-TRACKING 1
6 7201-7 COVER-TRACKING 1
7 7202A ADAPTOR, WHEEL 1
8 7202B ADAPTOR, CAP 1
9 7203 GLIDE-DELRIN 2
10 7221 SPRING-TRACKING 1
11 7225 BASE-GLIDE 1
12 7226 BASE-GUIDE 1
13 7227 BUSHING-GUIDE 1
14 7228 ACTUATOR-PUSH/PULL 1
15 7229 STUD-GLIDE 1
16 7230 SHAFT-ACTUATOR 1
17 7231 SHAFT-GUIDE 1
18 7232 HOUSING-ACTUATOR 1
19 7233 LEVER-ACTUATOR 1
20 7234 LINK-ACTUATOR RH 1
21 7235 LINK-ACTUATOR LH 1
22 7236 STANDOFF-GUARD 2
23 7237 STANDOFF-SECTOR 2
24 4 WASHER 5/16 SAE 4
25 37 CAPSCREW 5/16-18 X 3/4 4
26 5-0023 WASHER-FLAT 5/16 USS 4
27 5-0014 WASHER 3/8 INTERNAL STAR 4
28 1-0001 CAPSCEW 3/8-16 x 1 GR. 5 4
29 5-0056 SHIM-ARBOR 5/8 x 1 x .02 3
30 701F CIRCLIP 5/8 2
31 202B BALL BEARING-M10xM30 1
ITEM
NO.
PART NUMBER DESCRIPTION QTY.
32 2-0070 S.B. 3/8 x 2 1/8 1
33 7-0070 SET SCREW 7/16-14 x 7/32 HL 1
34 7-0071 SET SCREW 1/4-28 x 1 3/4 CP 1
35 626 SPRING-BELT TENSION 1
36 1-0040 3/8 x 3/8 S.B. 2
37 720-1 KNOB-TRACKING 1
38 707EXM WHEEL-IDLER 1
39 25 SET SCREW 5/16-18 X 3/8 CP 3
40 2-0038 SHCS 8-32 x 5/8 5
41 20 NUT-NYLOK JAM 1/2-20 1
42 21 WASHER, 1/2 SAE PLTED 1
43 5 WASHER 1/4 AN960-416 17
44 2-0013 SHCS 1/4-20 X 5/8 7
45 209 SHCS 1/4-20 X 3/4 8
46 208 SHCS 5/16-18 x 1 1/4 2
47 736-1 SECTOR-BELT TENSION 1
48 7600-737G HANDLE, QUICK CHANGE 1
49 737A KNOB, HANDLE 1
50 737B BUTTON 1
51 737C STRIP, HANDLE 1
52 737D SPRING, BUTTON 1
53 737E NIPPLE, 1/4 CLOSE 1
54 737F PAWL 1
55 26 PIN, ROLL 3/32 x 3/8 1
56 27 SCREW, DRIVE, #8 X 5/8 1
57 28 SCREW, DRIVE, #2 x 1/4 1
58 31-1 BHSHCS 1/4-20 X 1 1/4 2
59 7-0055 10-24 x 1/2 FHSHCS 2
60 7600-740 COVER-QUICK CHANGE 1
61 9 BHSHCS 10-24 X 1/2 3
62 18 WASHER, 960-516, AN 2
JULY 2020
MODEL 720M PARTS LIST

14.63
14.94
8.05 8.55
3.80
7.25
7.75
31.64
MODEL 720M FOOTPRINT
JULY 2020

16
47
15
28
27
50
11
51
19
22
3
12
20
42
41
2
1
21
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18
35
39
4
40
26
43
7
25
10
33
23
46
14
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38
37
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30
31
36
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34
24
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6
13
32
41
48
49
MODEL 720A EXPLODED VIEW
OCTOBER 2020

MODEL 720A PARTS LIST
OCTOBER 2020
ITEM
NO.
PART NUMBER DESCRIPTION QTY.
1 941-1 BASE, CONTROL MOUNT 1
2 MB4C-720 BRACKET-MOUNTING 1
3 720 MOTOR MOTER-CALL FACTORY 1
4
7200-3 FRAME-MAIN
1
5 7201-5 ARM-MAIN SLIDE 1
6 7201-6 PIVOT-TRACKING 1
7 7201-7 COVER-TRACKING 1
8 7202A ADAPTOR, WHEEL 1
9 7202B ADAPTOR, CAP 1
10 7203 GLIDE-DELRIN 2
11 7204 STRAP-TUBING 1/4 3
12 7205-1 GROMMET-7/8 1
13 7209 FITTING- 90 DEG. 1/8 NPT x 1/4T 2
14 7210 CYLINDER-AIR 1
15 7211 REGULATOR/OILER-AIR 1
16 7211-1 GUAGE-PRESSURE 1 1/2" 1
17 7212 VALVE-FLOW CONTROL 2
18 7213 VALVE-SELECTOR 1
19 7214 FITTING-90 DEG 1/4 NPT x 1/4T 2
20 7215 FITTING-BULKHEAD 1/4T x 1/4T 3
21 7217 FITTING-ST. 1/4 NPT x 1/4T 6
22 7219 TUBING-AIR 1/4 x 1/8 1
23 7221 SPRING-TRACKING 1
24 7225 BASE-GLIDE 1
25 7229 STUD-GLIDE 1
26 7238 BASE-CYLINDER 1
ITEM
NO.
PART NUMBER DESCRIPTION QTY.
27 4 WASHER 5/16 SAE 4
28 37 CAPSCREW 5/16-18 X 3/4 4
29 5-0023 WASHER-FLAT 5/16 USS 4
30 5-0014 WASHER 3/8 INTERNAL STAR 4
31 1-0001 CAPSCEW 3/8-16 x 1 GR. 5 4
32 202B BALL BEARING-M10xM30 1
33 7-0070 SET SCREW 7/16-14 x 7/32 HL 1
34 7-0071 SET SCREW 1/4-28 x 1 3/4 CP 1
35 720-1 KNOB-TRACKING 1
36 707EXM WHEEL-IDLER 1
37 25 SET SCREW 5/16-18 X 3/8 CP 1
38 2-0038 SHCS 8-32 x 5/8 5
39 20 NUT-NYLOK JAM 1/2-20 1
40 21 WASHER, 1/2 SAE PLTED 1
41 5 WASHER 1/4 AN960-416 10
42 209 SHCS 1/4-20 X 3/4 8
43 9 BHSHCS 10-24 X 1/2 3
44 2-0010 SHCS 3/8-16 X 1 1/2 1
45 17 WASHER 3/8 AN960-616 1
46 4-0030 NUT-7/16-20 JAM 1
47 3-0037 SCREW-8-32 x 2 1/4 PH 2
48 5-0049 WASHER- #8 FLAT 2
49 4-0026 NUT- 8-32 NYLOCK 2
50 23 NUT, 6-32 KEP 3
51 2-0061 SCREW- 6-32 x 3/4 FH 3

17.65
14.94
8.05
7.75
7.25 32.77
8.55
3.80
MODEL 720A FOOTPRINT
OCTOBER 2020

Just some of the arm and wheel combinations that are avaible for the Model 720 Probe Grinder. Please contact your local dealer or
the factory to learn about wheels that are available or check our website at www.burrking.com/wheel-picker
accessory arms
Shown with
2”x1”Contact Wheel
Shown with
1”x2”Contact Wheel
Shown with
1”x1”Contact Wheel
Shown with
3”x1”Contact Wheel
Shown with
1”x.830”Contact Wheel
Contact Arm #1453
Shown with
1”x 1.830”Contact Wheel
Contact Arm #1423
Shown with 3/8”x 7/16”Contact Wheel
Contact Arm #1452
Contact Arm #1443
Contact Arm #1451
Contact Arm #1470
Contact Arm #1490
Wheel Diameters
from 3/8”to 3”
Wheel Widths
from 1/2”to 2”
Wheel Hardness
from 50 to 90
Duro
Wheels Plain
Faced/Serrated
Call Us For
Additional
Specifications
and Options
INTERCHANGEABLE
ARMS FIT ALL
INTERNAL GRINDING
ATTACHMENTS
Always wear protective eye, face, arm, leg and body gear when using any grinder, polisher, buffer or other rotating machinery.
Value Adding Accessories & Options
14
Burr King Catalog 68 2019.qxp_Burr King Catalog 7/18/19 2:34 PM Page 14