3
Cut-Off Wheel Tool INSTRUCTIONS MANUAL
25,000 RPM 76 mm (3 in), 20,000 RPM 100 mm (4 in), 12,000 RPM 115 mm
(4.5 in), 12,000 RPM 125 mm (5 in), and 10,000 RPM 152 mm (6 in)
Important Safety Information
Please read, understand and follow all safety information contained in these instructions prior to the use of this tool.
Retain these instructions for future reference.
Intended Use
These pneumatic tools are designed to be used with the appropriate size Type 1 and Type 41 abrasive Cut-Off Wheel for cutting metals. It should only be used for
such cutting applications and within its marked capacity and ratings. Only accessories specifically recommended by 3M should be used with this tool. Use in any
other manner or with other accessories could lead to unsafe operating conditions.
Do not operate tool in water or in an excessively wet application.
Do not use cut-off wheels that have a Max RPM less than the marked RPM Rating on the tool.
Explanation of Signal Word Consequences
Indicates a potentially hazardous situation which, if not avoided, may result in death or serious injury
and/or property damage.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury and/or property damage.
WARNING:
CAUTION:
WARNING
To reduce the risks associated with impact from abrasive product or tool breakup, sharp edges, hazardous pressure, rupture, vibration and noise:
• Read, understand and follow the safety information contained in these instructions prior to the use of this tool. Retain these instructions for future
reference.
• Only personnel who are properly trained should be allowed to service this tool.
• Practice safety requirements. Work alert, have proper attire, and do not operate tools under the influence of alcohol or drugs.
• Operators and other personnel must always wear protection for eyes, ears, and respiratory protection when in the work area or while operating this
product. Follow your employer’s safety policy for PPE’s and/or ANSI Z87.1 or local/national standards for eyewear and other personal protective equipment
requirements.
• Wear leather apron or other protective apparel, taking into consideration the type of work being done.
• Never exceed marked maximum input pressure (90psi / .62Mpa / 6.2Bars).
• Proper eye protection must be worn at all times.
• Tool shall not be operated in the presence of bystanders.
• If you notice any abnormal noise or vibration when operating the product, immediately discontinue its use and inspect for worn or damaged components
(mounting hardware, abrasive product, etc). Correct or replace the suspect component. If abnormal noise or vibration still exists, return the tool to 3M for
repair or replacement. Refer to warranty instructions.
• Never operate this tool as a cut-off wheel tool without all guards or safety features in place and in proper working order.
• Prior to use, ensure guard is oriented to protect the operator from flying fragments and is properly secured.
• Do not remove or disable safety feature of on-off control device.
• Make sure the tool is disconnected from its air source before servicing, inspecting, maintaining, cleaning, and before changing abrasive product.
• Only use wheel retainers and wheel arbors supplied by 3M.
• Prior to use, or if dropped or jammed, inspect wheel retainers and wheel arbors and abrasive product for possible chips, cracks or other damage, and
insure the abrasive product is correctly secured. If damaged, replace with new abrasive product and wheel retainers and wheel arbors available from 3M.
Original Instructions
1
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Parts Page
PARTS LIST FOR PT# FOR 20233, 25000 RPM, 3”, & 20234, 20000, RPM, 4”
CUT-OFF TOOLS
Fig. #
1
1
2
3
4
5
6
7
3M Part Number
06570
06594
06585
06584
06565
06579
06609
06510
06639
06561
06643
06563
06601
06560
06527
06508
06567
06568
06638
06558
06543
06511
06556
06501
06598
06642
06559
06566
06557
06552
06553
06554
06555
06608
06604
06605
06607
06522
06610
Description
3” Cut-off Wheel Guard
4” Cut-off Wheel Guard
Wheel Retainer
Wheel Arbor
Retainer
O-Ring 7/8” x 1/4” x 3/16”
O-Ring
Ball Bearing 3/8” X 7/8” X 9/32”
Front End Plate
Rotor
Vane, Set of 5
Cylinder (25,000 RPM)
Cylinder (20,000 RPM)
Rear End Plate
Wave Washer .440” X .618” X .008”
Ball Bearing
Washer .251” X .468” X .063”
Screw #8-32 X 3/8” But Hd Cap
Housing
Torr Pin, 3/16” X 7/8”
O-Ring
O-Ring
Regulator
Screw, 6-32 X 3/4” Set Soc Hex
Housing Cover
Lever
8
9
10
11
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
34
35
36
Groove Pin, 1/8” X 7/8” Type E
Warning Label
Muffler
Throttle Valve Seat
Throttle Valve
Taper Spring
Screen
O-Ring, 1/16” X 5/8” X 3/4”
Rotatable Exhaust Defl ector
Inlet Bushing
Inlet Bushing, 3/8” NPT (4”)
7/8” Wrench
3/16” Hex Wrench
3
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Parts Page
PARTS LIST FOR PT# FOR 20243, 12000 RPM, 4 1/2”, 20235, 12000 RPM, 5”,
& 20236, 10000 RPM, 6” ANGLE CUT-OFF TOOLS
3M Part
Fig. # Used
16
17
18
19
20
21
22
23
24
25
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Number
06652
06653
06520
06655
06609
06510
06639
06562
06643
06563
06601
06560
06527
06508
06567
06568
06638
06558
06543
06511
06556
06501
06598
06642
06559
06566
06557
06552
06553
06554
06555
06608
06604
06607
06524
06544
Description
Angle Head Spacer
Angle Head Clamp Nut
Pin, 1/8” x 1/4”
Lock Ring
O-Ring
Ball Bearing 3/8” X 7/8” X 9/32”
Front End Plate
Rotor
Vane, Set of 5
Cylinder (12,000 RPM)
Cylinder (10,000 RPM)
Rear End Plate
Wave Washer .440” X .618” X .008”
Ball Bearing
Washer .251” X .468” X .063”
Screw #8-32 X 3/8” But Hd Cap
Housing
Torr Pin, 3/16” X 7/8”
O-Ring
O-Ring
Regulator
Screw, 6-32 X 3/4” Set Soc Hex
Housing Cover
Lever
Fig. #
1
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
3M Part Number
06597
06595
06596
06590
06589
06651
06648
06644
06504
06542
06550
06649
06654
06503
06526
06523
06650
Description
4 1/2” Cut-off Guard
5” Cut-off Guard
6” Cut-off Guard
Wheel Retainer
Wheel Arbor
Output Spindle
Groove Pin, 1/8” X 7/8” Type E
Warning Label
Muffler
Throttle Valve Seat
Throttle Valve
Taper Spring
Gear Spacer and Ball Bearing
Spriral Bevel Gear Set
Elastic Stop Nut 9/16”-18
Ball Bearing
Wave Washer
HD Angle Head
Hex Head Plug Bolt (2)
Jam Nut
Handle
Grease Fitting
Screen
O-Ring, 1/16” X 5/8” X 3/4”
Rotatable Exhaust Defl ector
Inlet Bushing, 3/8” NPT (4”)
5/8” Wrench
Angle Head Cap
Adjustable Spanner Wrench
4
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Product Configuration/Specifications:
Model
Number
Side
Handle
Wheel
Size
Speed
RPM
Product
Net WT. kg. (lb.) mm (in.)
Height
Length
mm (in.)
*Noise Level dBA **Vibration Level **Uncertainty K
2
2
2
Pressure (Power)
m/s (ft/s )
11.1 (36.5)
19.8 (65.1)
8.1 (26.6)
8.1 (26.6)
8.1 (26.6)
m/s
4.44
20233
20234
20243
20235
20236
NA
NA
3”
4”
25,000
20,000
12,000
12,000
10,000
0.95 (2.09)
1.02 (2.25)
1.49 (3.30)
1.57 (3.47)
1.67 (3.69)
76,2 (3.00) 196 (7.75)
82,5 (3.25) 196 (7.75)
133 (5.25) 222 (8.75)
133 (5.25) 222 (8.75)
133 (5.25) 222 (8.75)
83.5 (95.1)
7.92
3.24
3.24
3.24
83.5 (95.1)
1
Yes
Yes
Yes
4 /2”
83.5 (95.1)
5”
6”
83.5 (95.1)
83.5 (95.1)
* Declared noise levels; measurements carried out in accordance with standard EN ISO 15744:2002.
** Declared vibration levels in accordance with EN12096; measurements carried out in accordance with standard EN ISO 8662-4;1997.
The noise and vibration values stated in the table are from laboratory testing in conformity with stated codes and standards and are not sufficient risk evaluation
for all exposure scenerios. Values measured in a particular work place may be higher than the declared values. The actual exposure values and amount of risk
or harm experienced to an individual is unique to each situation and depends upon the surrounding environment, the way in which the individual works, the
particular material being worked, work station design, as well as upon the exposure time and the physical condition of the user. 3M cannot be held responsible
for the consequences of using declared values instead of actual exposure values for any individual risk assessment.
Operating / Maintenance Instructions
The tool is intended to be operated as a hand held tool. It is always recommended that while using the tool, operators stand on a solid floor, in a secure position
with a firm grip and footing. Be aware that the tool can develop a torque reaction. See the section “SAFETY PRECAUTIONS”.
Use a clean lubricated air supply that will give a measured air pressure at the tool of 6.2 bar (90 psig) when the tool is running with the lever fully depressed. It
is recommended to use an approved 10 mm (3/8 in) x 8 m (25 ft) maximum length airline for the 3 in. Cut-Off Wheel Tool and a 12.7 mm (1/2 in) x 8 m (25 ft)
maximum length airline for the 4 in. and larger Cut-Off Wheel Tools. Connect the tool to the air supply as shown in Figure 1. Do not connect the tool to the airline
system without an easily accessible air shut off valve. It is strongly recommended that an air filter, regulator and lubricator (FRL) be used as shown in Figure 1 as
this will supply clean, lubricated air at the correct pressure to the tool. In any case appropriate air pressure regulators shall be used at all times while operating
this tool where the supply pressure exceeds the marked maximum of the tool. Details of such equipment can be obtained for your tool distributor. If such
equipment is not used, the tool should be manually lubricated. To manually lubricate the tool, disconnect the airline and put 2 to 3 drops of suitable pneumatic
motor lubricating oil such as 3M™ Air Tool Lubricant PN 20451, Fuji Kosan FK-20 or Mobil ALMO 525 into the hose end (inlet) of the tool. Reconnect tool to the air
supply and run tool slowly for a few seconds to allow air to circulate the oil. If the tool is used frequently, lubricate it on a daily basis or lubricate it if the tool starts
to slow or lose power. It is recommended that the air pressure at the tool be 6.2 bar (90 psig) while the tool is running so the maximum RPM is not exceeded. The
tool can be run at lower pressures but should never be run higher than 6.2 bar (90 psig). If run at lower pressure the performance of the tool is reduced.
Recommended Airline
Recommended Maximum
Air Pressure
Size - Minimum
Hose Length
25 feet
10 mm
12.7 mm
3/8 in
1/2 in
8 meters
Maximum Working Pressure 6.2 bar
90 psig
NA
Recommended Minimum
NA
Lubricate the angle head every 6-8 working hours with premium grease with the following properties:
-High and low temperature performance
-Shear stable
-Anti-wear protection
-Low viscosity base flare for high speed application
-Very low coefficient of friction
Fuchs Renolit AX S2 or equal is recommended. Grease gun and grease available from your grease supplier.
5
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Closed Loop Pipe System
Sloped in the direction of air flow
Safety Precautions
Drain Leg
Ball Valve
1. Read all instructions before using this tool. All operators must be
fully trained in its use and aware of these safety rules.
2. The tool RPM should be checked on a regular basis (at shift change).
3. Make sure the tool is disconnected from the air supply. Select a
suitable abrasive cut-off wheel and secure it to the mounting shaft
using the wheel retainer and wheel arbor supplied with the tool.
Be careful to center the cut-off wheel on the wheel arbor before
tightening the wheel retainer nut. Do not over tighten the wheel
retainer or you will crack the wheel.
4. Always wear required safety equipment when using this tool.
5. Always remove the air supply to the tool before fitting, adjusting or
removing the abrasive cut-off wheel.
6. Always adopt a firm footing and grip and be aware of torque
reaction developed by the tool.
To Tool Station
Filter
Ball
Valve
Regulator
Lubricator
Ball Valve
Air Flow
Air Dryer
Drain Valve
7. Use only 3M approved spare parts.
Air Hose
8. Always ensure the material being worked is firmly fixed to avoid
movement.
To Coupler
at or near Tool
Air Compressor
and Tank
9. Check hose and fittings regularly for wear. Do not carry the tool by
its hose; always be careful to prevent the tool from being started
when carrying the tool with the air supply connected.
10. Dust can be highly combustible. Keep working area clean.
11. If tool is serviced or rebuilt check to ensure that the maximum tool
RPM is not exceeded and that there is no excessive tool vibration.
12. Do not exceed maximum recommended air pressure. Use safety
equipment as recommended.
Figure 1
3M™ Cut-Off Wheel
3M™ Cut-Off Wheels are designed for use on the 3M™ Cut-Off Wheel Tools.
Cut-Off Wheel Tool Model number 20235 is designed for use with 5” diameter
and 125 mm diameter abrasive wheels. When mounting new unused abrasive
wheels, ensure the true wheel diameter is no larger than 127.5 mm and no
smaller than 122.5 mm.
13. Prior to installing any abrasive cut-off wheel, always check that it’s
marked maximum operating speed is equal or higher than the rated
speed of this tool.
14. The tool is not electrically insulated. Do not use where there is a
possibility of contact with live electricity, gas pipes, and/or water
pipes.
See 3M ASD Accessory catalog 61-5002-8098-9 and Fantastic Finishes &
More catalog 61-5002-8097-1 for additional Back-Up Pads and Accessories.
15. Take care to avoid entanglement with the moving parts of the tool
with clothing, ties, hair, cleaning rags or loose hanging objects. If
entangled, stop air supply immediately to avoid contact with moving
tool parts.
16. Keep hands clear of the spinning cut-off wheel during use.
17. If the tool appears to malfunction, remove from use immediately and
arrange for service and repair.
Cut-Off Tools
Removing and Mounting
Cut-Off Wheels on tool
1. Disconnect air line from tool.
18. Do not allow the tool to free spin without taking precautions to
protect any persons or objects from the rupture of the abrasive
cut-off wheel.
19. Immediately release the start handle in the event of any disruption
of pressure; do not attempt to re-start until the disruption has been
corrected.
20. When tool is not in use, store in a clean, dry environment free of
debris and in a manner that ensures that the cutting-off wheel is
not damaged.
21. Fixture workpiece such that the cut slot is kept at a constant or
increasing width during the operation.
2. Use the hex wrench for the 3” and 4” cut-off tool and the flat wrench for
the 4-1/2”, 5”, and 6” cut-off tools to secure the tool spindle.
3. Use the flat wrench for the 3” and 4” cut-off tool and the adjustable
spanner wrench for the 4-1/2”, 5” and 6” cut-off tools to turn the outer
wheel retainer counter clockwise.
4. After the old cut-off wheel has been removed from the tool, inspect
the threaded shaft to ensure that the threads are free of debris and
undamaged.
5. Place the new cut-off wheel on the shaft with the center hole aligned on
the centering lip of the wheel arbor.
6. Secure the tool spindle and wheel retainer with the appropriate
wrenches and tighten the wheel retainer. Be careful not to over tighten
the wheel retainer or the cut-off wheel could be damaged.
22. Operate tool in a well lit work area.
23. Recycle or dispose of tool according to Local, State, and Federal
regulations.
6
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with all applicable operating instructions, safety precautions, and other
procedures stated in the operating manual to be entitled to warranty coverage.
3M shall have no obligation to repair or replace any tool or part that fails due to
normal wear, inadequate or improper maintenance, inadequate cleaning, non-
lubrication, improper operating environment, improper utilities, operator error
or misuse, alteration or modification, mishandling, lack of reasonable care, or
due to any accidental cause. If a tool or any part thereof is defective within this
warranty period, your exclusive remedy and 3M’s sole obligation will be, at 3M’s
option, to repair or replace the tool or refund the purchase price.
Limitation of Liability: Except where prohibited by law, 3M and seller will not
be liable for any loss or damage arising from the 3M product, whether direct,
indirect, special, incidental or consequential, regardless of the legal theory
asserted, including warranty, contract, negligence or strict liability.
Submitting a Warranty Claim: Contact your dealer when submitting a warranty
claim in accordance with the restrictions listed above. Please note that all
warranty claims are subject to manufacturer’s approval. Be sure to keep your
sales receipt in a safe place. This must be submitted when filing a warranty
claim, within 1 year from the date of purchase.
Product Use: All statements, technical information and
recommendations contained in this document are based up on tests or
experience that 3M believes are reliable. However, many factors beyond
3M’s control can affect the use and performance of a 3M product in
a particular application, including the conditions under which the 3M
product is used and the time and environmental conditions in which the
product is expected to perform. Since these factors are uniquely within
the user’s knowledge and control, it is essential that the user evaluate
the 3M product to determine whether it is fit for a particular purpose and
suitable for the user’s method of application.
Warranty and Limited Remedy: 3M warrants this tool against defects
in workmanship and materials under normal operating conditions for one
(1) year from the date of purchase. 3M MAKES NO OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE
OF DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for
determining whether the 3M tool is fit for a particular purpose and
suitable for user’s application. User must operate the tool in accordance
Product Repair after Warranty Has Expired
3M does not offer repair service for product out of warranty.
3
Abrasive Systems Division
3M Center, Building 223-6N-02
St. Paul, MN 55144-1000
© 3M 2008
3M is a trademark of 3M Company.
34-8701-2621-5
7
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Contact: Michelle Dumas
Creator: deZinnia
Spec # 34-8701-2621-5
Structure: SS-12395
Ink: Black
Date: 06/27/08
Version 1
8
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