Full Text Searchable PDF User Manual
1
Important Safety Information
Intended Use
GRINDERS, TYPE-27 INSTRUCTION MANUAL
101 mm (4 in.) - 113 mm (4 1/2 in.)
12,000 RPM
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.
These pneumatic tools are intended for use in industrial locations, and used only by skilled, trained professionals in accordance with the instructions in this
manual. These pneumatic tools are designed to be used with the appropriate size Type 27 Wheel for grinding metals. They should only be used for such grinding
applications and within their marked capacity and ratings. Only accessories specifically recommended by 3M should be used with these tools. 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 grinding wheels that have a Max RPM less than the marked RPM rating on the tool.
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 is not to 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 abrasive
product or accessories. 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 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.
• Make sure the tool is disconnected from its air source before servicing, inspecting, maintaining, cleaning, and before changing abrasive product.
• Only use wheel retainers (flanges) and wheel arbors supplied by 3M.
• Never use this tool with Type 1 wheels or cut-off wheels.
WARNING
Original Instructions
Rev. 2/19/2015
Summary of device labels containing safety information
Marking
Description
WARNING:
Refer to Instruction Manual
Direction of Rotation
90psi / .62Mpa / 6.2Bars Max
Maximum Pneumatic Inlet Pressure
12,000 RPM
Maximum Rotational Speed
Use accessories rated at tool RPM or higher
Accessories Safety Note
Prolonged vibration may cause injury
Vibration Safety Note
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:
1
2
• 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, or if safety labels cannot be read, replace with new abrasive product, wheel retainers,
wheel arbors, and/or labels available from 3M.
• Never use a damaged grinder until it has been repaired.
• Never over-ride or disable the safety features of the start-stop control such that it is in the on position.
• Use only with mounting hardware recommended by 3M; check with 3M for mounting hardware requirements.
• If the tool is jammed, shut off the tool and ease it free. Ensure the abrasive product is correctly secured.
• Never allow this tool to be used by children or other untrained people.
• Do not leave an unattended tool connected to air source.
To reduce the risks associated with skin abrasion, burns, cutting & severing, impact or entrapment:
• Never install grinding wheels in a grinder tool which is unguarded.
• Keep hands, hair, and clothing away from the cutting part of the tool.
• Wear suitable protective gloves while operating tool.
• Do not touch the rotating parts during operation for any reason.
• Do not force tool or use excessive force when using tool.
To reduce the risks associated with vibration:
• If any physical hand/wrist discomfort is experienced, work should be stopped promptly to seek medical attention. Hand, wrist and arm injury may result
from repetitive work, motion and overexposure to vibration.
To reduce the risks associated with loud noise:
• Always wear hearing protection while operating this tool. Follow your employer’s safety policy or local/national standards for personal protective
equipment requirements
To reduce the risks associated with fire or explosion:
• Do not operate the tool in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. The abrasives are able to create sparks
when working material, resulting in the ignition of the flammable dust or fumes.
• Refer to MSDS of material being worked as to potential for creating fire or explosion hazard.
To reduce the risks associated with hazardous dust ingestion or eye/skin exposure:
• Use appropriate respiratory and skin protection, or local exhaust as stated in the MSDS of the material being worked on.
To reduce the risks associated with hazardous voltage:
• Do not allow this tool to come into contact with electrical power sources as the tool is not insulated against electrical shock.
CAUTION!
To reduce the risks associated with whipping or hazardous pressure/rupture:
• Ensure supply hose is oil resistant and is properly rated for required working pressure.
• Do not use tools with loose or damaged air hoses or fittings.
• Be aware that incorrectly installed hoses and fittings might unexpectedly come loose at any time and create a whipping/impact hazard.
To reduce the risks associated with flying off of accessory parts:
• Use care in attaching abrasive product and mounting hardware; following the instructions to ensure that they are securely attached to the tool
before use.
• Never point this product in the direction of yourself or another person, or start tool unintentionally.
• Never over-tighten accessory fasteners.
WARNING
3
19
20 21
22
23
24 25
26 27
28
47
48
14
13
49
50
39
40 41
42
43 44
46
45
29
30
31
32
33
34
35
36
37
38
1
2
3
4
5
6
7
8
9
10
11
12
15
16
17
18
6
LUBRICATE
FUCHS RENOLIT
A X S2 OR EQUAL
USE 3M TL62
THREADLOCKER
TO
20-25 FT-LB
TO
120 IN-LB
USE 3M TL62
THREADLOCKER
TO
90-130 IN-LB
INSTALL WITH
BEVEL FACING OUT
USE 3M TL62
THREADLOCKER
TO
15-20 FT-LB
Parts Page
PARTS LIST FOR PN 28403, 12000 RPM, 4” GRINDER, TYPE-27
Fig
3M PN
Description
Qty
1
55082
Retainer-Grinding Wheel
1
2
55085
Wheel Flange
1
3
55088
Retaining Ring
1
4
55101
Output Spindle 3/8-24 Thread
1
5
55078
Ball Bearing
1
6
55113
Gear Set
1
7
55114
Ball Bearing
.500" x .25" x .125" (2)
2
8
55076
Socket Head Hex Screw, 1/4-20
1
9
55083
Hex Nut, 1/4-20
1
10
55109
4” Type 27 Guard
1
11
55111
Angle Head
1
12
06523
Grease Fitting
1
13
06503
Jam Nut
1
14
28402
Side Handle 3/8-16 EXT Thread,
3M PN28402
1
15
06653
Angle Head Clamp Nut
1
16
06655
Lock Ring
1
17
06520
Pin, 1/8" x 1/4"
1
18
06609
O-Ring
1
19
06510
Ball Bearing
3/8" x 7/8" x 9/32"
1
20
06639
Front End Plate
1
21
06562
Rotor
1
22
06643
Vane, Set of 5
1
23
06563
Cylinder
1
24
06560
Rear End Plate
1
25
06527
Wave Washer
.440" x .618" x .008"
1
26
06508
Ball Bearing
1
Fig
3M PN
Description
Qty
27
06567
Washer .251" x .468" x .063"
1
28
06568
Screw #8-32 X 3/8 But Hd Cap
1
29
06638
Housing
1
30
06642
Lever
1
31
06558
Torr Pin, 3/16" x 7/8"
1
32
06543
O-Ring
1
33
06511
O-Ring
1
34
06556
Regulator
1
35
06501
Screw, 6-32 x 3/4 Set Soc Hex
1
36
06559
Groove Pin, 1/8" x 7/8" Type E
1
37
06598
Housing Cover
1
38
06566
Warning Label
1
39
06552
Throttle Valve Seat
1
40
06557
Muffler
1
41
06553
Throttle Valve
1
42
06554
Taper Spring
1
43
55084
Exaust Deflector
1
44
06555
Screen
1
45
06608
O-Ring, 1/16" x 5/8" x 3/4"
1
46
55107
Bushing, 3/8” NPT
1
47
55081
Spanner Wrench
1
48
06524
5/8" Wrench
1
49
55106
4.5" Guard (flat back)
OPT
50
55100
Flange (2)
OPT
3
4
18
19 20
21
22
23
24 25
2627
38
39 40
41
42 43
45
44
46
13
12
47
48
28
29
30
31
32
33
34
35
36
37
1
2
3
4
5
6
7
8
9
10
11
14
15
16
17
5
LUBRICATE
FUCHS RENOLIT
A X S2 OR EQUAL
USE 3M TL62
THREADLOCKER
TO
20-25 FT-LB
TO
120 IN-LB
USE 3M TL62
THREADLOCKER
TO
90-130 IN-LB
INSTALL WITH
BEVEL FACING OUT
USE 3M TL62
THREADLOCKER
TO
15-20 FT-LB
Parts Page
PARTS LIST FOR PN 28405, 12000 RPM, 4 1/2” GRINDER, TYPE-27
Fig
3M PN
Description
Qty
1
06589
Wheel Arbor
2
2
55088
Retaining Ring
1
3
55112
Output Spindle 5/8-11 Thread
1
4
55078
Ball Bearing
1
5
55113
Gear Set
1
6
55114
Ball Bearing
.500" x .25" x .125" (2)
2
7
55076
Socket Head Hex Screw, 1/4-20
1
8
55083
Hex Nut, 1/4-20
1
9
55108
4-1/2” Type 27 Guard
1
10
55111
Angle Head
1
11
06523
Grease Fitting
1
12
06503
Jam Nut
1
13
28402
Side Handle 3/8-16 EXT Thread,
3M PN28402
1
14
06653
Angle Head Clamp Nut
1
15
06655
Lock Ring
1
16
06520
Pin, 1/8" x 1/4"
1
17
06609
O-Ring
1
18
06510
Ball Bearing
3/8" x 7/8" x 9/32"
1
19
06639
Front End Plate
1
20
06562
Rotor
1
21
06643
Vane, Set of 5
1
22
06563
Cylinder
1
23
06560
Rear End Plate
1
24
06527
Wave Washer
.440" x .618" x .008"
1
Fig
3M PN
Description
Qty
25
06508
Ball Bearing
1
26
06567
Washer .251" x .468" x .063"
1
27
06568
Screw #8-32 x 3/8 But Hd Cap
1
28
06638
Housing
1
29
06642
Lever
1
30
06558
Torr Pin, 3/16" x 7/8"
1
31
06543
O-Ring
1
32
06511
O-Ring
1
33
06556
Regulator
1
34
06501
Screw, 6-32 x 3/4 Set Soc Hex
1
35
06559
Groove Pin, 1/8" x 7/8" Type E
1
36
06598
Housing Cover
1
37
06566
Warning Label
1
38
06552
Throttle Valve Seat
1
39
06557
Muffler
1
40
06553
Throttle Valve
1
41
06554
Taper Spring
1
42
55084
Exaust Deflector
1
43
06555
Screen
1
44
06608
O-Ring, 1/16" x 5/8" x 3/4"
1
45
55107
Bushing, 3/8” NPT
1
46
55115
Spanner Wrench
1
47
06524
5/8" Wrench
1
48
55106
4.5" Guard (flat back)
OPT
5
Parts Page
PARTS LIST FOR PN 28413, 12000 RPM, 4” GRINDER, TYPE-27 EXTENDED
Fig
3M PN
Description
1
55082
Retainer - Grinding wheel
2
55085
Wheel Flange
3
55076
Socket Head Hex Screw, 1/4-20
4
66766
Washer (2)
5
55083
Hex Nut, 1/4-20
6
55109
4” Type 27 Guard
7
55088
Retaining Ring
8
55101
Output Spindle 5/8-11 Thread
9
55078
Ball Bearing
10
55113
Gear Set
11
55114
Ball Bearing
1/2 in. x 1/4 in. x 1/8 in. (2)
12
55111
Angle Head
13
06523
Grease Fitting 1/8 in.
14
06503
Jam Nut
15
28402
Support Handle
16
28731
Tapered Clamp Nut
17
06510
Ball Bearing (3)
18
55092
Bearing Holder
19
55110
Disc Spring (2)
20
28732
Shaft
21
55097
Spring
22
28733
O-ring
23
28734
Coupler
24
28735
Extension Housing
25
06653
Angle Head Clamp Nut
26
06609
O-ring
27
66774
6-32 x 1/4 in. Socket Head Set
Screw
28
28736
Locking Clamp Nut
29
06639
Front End Plate
30
06561
Rotor (5 slot)
Fig
3M PN
Description
31
06643
Vane Set
32
06563
Cylinder
33
06560
Rear End Plate
34
06527
Wave Washer
35
06508
Ball Bearing
36
06567
Washer
37
06568
Button Head Cap Screw
8-32 x 3/8 in.
38
55099
Housing
39
06642
Lever Assembly
40
06558
Pin Torr 3/16 in. x 7/8 in.
41
06543
O-Ring
42
06511
O-Ring 1/16 in. x 3/8 in. x 1/2 in.
43
06556
Regulator
44
06501
Set Screw 6-32 x 3/4 in.
45
06559
Knurl Pin
46
06598
Housing Cover
47
06566
Warning Label
48
06552
Throttle Valve Seat
49
06557
Muffler
50
06553
Throttle Valve
51
06554
Taper Spring
52
55084
Exhaust Deflector
53
06555
Screen
54
06608
O-Ring 1/16 in. x 5/8 in. x 3/4 in.
55
55098
* LH Thread Bushing 3/8 in. NPT
56
55081
Spanner Wrench
57
06524
Wrench 5/8 in. Flat
58
55106
4.5” Guard (deep) - Optional
59
55100
Flanges (2)
60
55077
Set Screw 6-32 x 1/8 in.
48
49 50
51
52 53
54
55
56
57
59
58
15
14
32
33 34
35 3637
29 30
31
17
38
39 40
41
42
43
44
45
46
47
23
24
25
26
27
28
20
21
22
17
18
19
17
10
16
5
1
2
3 4
6
7
8
9
10
13
11
12
4
LUBRICATE
FUCHS RENOLIT
A X S2 OR EQUAL
USE 3M TL62
THREADLOCKER
TO
30-40 FT-LB
TO
120 IN-LB
USE 3M TL62
THREADLOCKER
TO
90-130 IN-LB
FILL WITH
COUPLING GREASE
USE 3M TL62
THREADLOCKER
TO
20-30 FT-LB
USE 3M TL62
THREADLOCKER
TO
90-130 IN-LB
USE 3M TL62
THREADLOCKER
TO
20-25 FT-LB
LH THREAD
INSTALL WITH
BEVEL FACING OUT
60
5
6
Parts Page
PARTS LIST FOR PN 28414, 12000 RPM, 4 1/2” GRINDER, TYPE-27
EXTENDED
Fig
3M PN
Description
1
06589
Wheel Flange (2)
2
55076
Socket Head Hex Screw, 1/4-20
3
66766
Washer (2)
4
55083
Hex Nut, 1/4-20
5
55108
4-1/2” Type 27 Guard
6
55088
Retaining Ring
7
55112
Output Spindle 5/8-11 Thread
8
55078
Ball Bearing
9
55113
Gear Set
10
55114
Ball Bearing 1/2 in. x 1/4 in. x
1/8 in. (2)
11
55111
Angle Head
12
06523
Grease Fitting 1/8 in.
13
06503
Jam Nut
14
28402
Support Handle
15
28731
Tapered Clamp Nut
16
06510
Ball Bearing (3)
17
55092
Bearing Holder
18
55110
Disc Spring (2)
19
28732
Shaft
20
55097
Spring
21
28733
O-ring
22
28734
Coupler
23
28735
Extension Housing
24
06653
Angle Head Clamp Nut
25
06609
O-ring
26
66774
6-32 x 1/4 in. Socket Head Set
Screw
27
28736
Locking Clamp Nut
28
06639
Front End Plate
29
06561
Rotor (5 slot)
Fig
3M PN
Description
30
06643
Vane Set
31
06563
Cylinder
32
06560
Rear End Plate
33
06527
Wave Washer
34
06508
Ball Bearing
35
06567
Washer
36
06568
Button Head Cap Screw
8-32 x 3/8 in.
37
06638
Housing
38
06642
Lever Assembly
39
06558
Pin Torr 3/16 in. x 7/8 in.
40
06543
O-Ring
41
06511
O-Ring 1/16 in. x 3/8 in. x 1/2 in.
42
06556
Regulator
43
06501
Set Screw 6-32 x 3/4 in.
44
06559
Knurl Pin
45
06598
Housing Cover
46
06566
Warning Label
47
06552
Throttle Valve Seat
48
06557
Muffler
49
06553
Throttle Valve
50
06554
Taper Spring
51
55084
Exhaust Deflector
52
06555
Screen
53
06608
O-Ring 1/16 in. x 5/8 in. x 3/4 in.
54
55107
Bushing 3/8 in. NPT
55
55115
Spanner Wrench
56
06524
Wrench 5/8 in. Flat
57
55106
4.5” Guard (deep) - Optional
58
55077
Set Screw 6-32 x 1/8 in.
21
23
25
26
27
30
31
32
33
34
35 36
37
38
39
40
41
42
43
44
45
46
47
48 49
50
51 52
53
54
55
56
57
14
15
16
17
9
13
12
16
20
18
19
22
24
2 3
4
5
6
7
8
9
10
11
1
28 29
3
16
LUBRICATE
FUCHS RENOLIT
A X S2 OR EQUAL
USE 3M TL62
THREADLOCKER
TO
30-40 FT-LB
TO
120 IN-LB
USE 3M TL62
THREADLOCKER
TO
90-130 IN-LB
FILL WITH
COUPLING GREASE
USE 3M TL62
THREADLOCKER
TO
20-30 FT-LB
USE 3M TL62
THREADLOCKER
TO
90-130 IN-LB
USE 3M TL62
THREADLOCKER
TO
20-25 FT-LB
INSTALL WITH
BEVEL FACING OUT
58
7
Product Configuration/Specifications:
Operating / Maintenance Instructions
PRIOR TO THE OPERATION
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. 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, 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
10 mm
3/8 in
8 meters
25 feet
Maximum Working Pressure 6.2 bar
90 psig
12.7 mm
1/2 in
Recommended Minimum
NA
NA
* Declared noise levels; measurements carried out in accordance with standard EN ISO 15744.
** Declared vibration levels in accordance with EN ISO 20643 and EN ISO 28927-1.
IMPORTANT NOTE:
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 scenarios. 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.
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.
Model
Number
Speed
RPM
Spindle
(in.)
Neck Type
Product
Net WT.
kg. (lb.)
Height
mm (in.)
Length
mm (in.)
*Noise Level
dBA Pressure
(Power)
**Vibration
Level
m/s
2
(ft/s
2
)
**Uncertainty
K m/s
2
28403
12,000
3/8-24
T-27
Short
1.21
(2.66)
114 (4.5)
216 (8.5)
86.4 (98.0)
3.1 (10.1)
0.03
28405
12,000
5/8-11
T-27
Short
1.29
(2.84)
119 (4.7)
216 (8.5)
84.9 (98.5)
7.1 (23.3)
0.12
28413
12,000
3/8-24
T-27
Extended
1.75
(3.85)
114 (4.5)
292 (11.5)
91.0 (102.6)
3.9 (12.8)
0.17
28414
12,000
5/8-11
T-27
Extended
1.83
(4.03)
119 (4.7)
292 (11.5)
86.0 (94.6)
5.7 (18.7)
0.05
7
8
Figure 1
Closed Loop Pipe System
Sloped in the direction of air flow
Drain Leg
Ball Valve
To Tool Station
Filter
Drain Valve
Regulator
Lubricator
Ball
Valve
Ball Valve
Air Flow
Air Dryer
Air Compressor
and Tank
Air Hose
To Coupler
at or near Tool
Safety Precautions
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 grinding wheel and secure it to the mounting shaft
using the wheel retainer and wheel arbor supplied with the tool. Be
careful to center the grinding wheel on the wheel retainer and or
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 grinding wheel.
6. Always adopt a firm footing and grip and be aware of torque
reaction developed by the tool.
7. Use only 3M approved spare parts.
8. Always ensure the material being worked is firmly fixed to avoid
movement.
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.
13. Prior to installing any abrasive grinding wheel, always check that its
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.
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 grinding wheel during use.
17. If the tool appears to malfunction, remove from use immediately and
arrange for service and repair.
18. Do not allow the tool to free spin without taking precautions to
protect any persons or objects from the rupture of the abrasive
grinding 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 grinding wheel is not
damaged.
21. Fixture workpiece such that the grinding cut slot is kept at a
constant or increasing width during the operation.
22. Operate tool in a well lit work area.
23. Recycle or dispose of tool according to Local, State, and Federal
regulations.
24. Whenever performing maintenance procedures, use care to avoid
exposure to any hazardous substances deposited on the tool as
a result of work processes. Also, refer to warnings related to dust
exposure.
3M™ Type 27 Grinding Wheels and Accessories
3M Type 27 Grinding Wheels and Accessories are designed specifically for
use on the 3M Type 27 Grinders.
See 3M ASD Accessories to Optimize Performance catalog 61-5002-8098-9
and Engineered Metalworking Solutions catalog 61-5002-8097-1 for additional
accessories.
Figure A
9
Disc Pad Accessories
3M PN
UPC PN
Description
Size (in)
02286
56479
Roloc™ Cool Running Disc Pad for 3/8-24 Spindle
4 x 3/8-24 INT
28474
28474
Roloc™ Disc Pad, Hard for 3/8-24 Spindle
4 x 3/8-24 INT
28475
28475
Roloc™ Disc Pad, Extra Hard for 3/8-24 Spindle
4 x 3/8-24 INT
28473
28473
Roloc™ Cool Running Disc Pad for 5/8-11 Spindle
4 x 5/8-11 INT
83489
83489
Roloc™ Disc Pad, Hard for 5/8-11 Spindle
4 x 5/8-11 INT
83980
83980
Roloc™ Disc Pad, Extra Hard for 5/8-11 Spindle
4 x 5/8-11 INT
Tool Spindle Thread Size Adapters
3M PN
UPC PN
Description
Size (in)
00009
22970
No. 9 Disc Holder Adapter
5/8-11 EXT 3/8-24 INT
00009
22971
No. 9 Disc Holder Adapter with M10 Thread
5/8-11 EXT M10-1.25 INT
Fibre Disc Mounting Accessories
3M PN
UPC PN
Description
Size (in)
28442
28442
Disc Pad Hub For Short Shaft Tools
2 1/2 x 3/8-24 INT
28476
28476
Low Profile Disc Pad Hub
2 1/2 x 5/8-11 INT
28443
28443
Disc Pad Face Plate Ribbed, Extra Hard Red
4 1/2
3M™ Fibre Discs and Accessories
3M™ Disc Pad Accessories
Related Products
Refer to ANSI B7.1-2000 Safety Requirements for Use, Care and Protection of Abrasive Wheels and ISO/EN 12413 Safety. Requirements for Bonded Abrasive
Products for proper abrasive wheel applications.
Choose from full line of 3M™ quality abrasives and these complimentary accessories to optimize tool performance.
3M Fibre Discs and Accessories are designed specifically for use on the 3M Type 27 Grinders and Sanders.
3M Disc Pad Accessories are designed specifically for use on the 3M Type 27 Grinders and Sanders.
9
10
Type 27 Wheel Mounting Hardware and Usage
Type 27 Grinding Wheels are also known as Depressed Center Grinding Wheels. They have a dish shaped center to allow the lower mounting hardware or flange
to be recessed into the wheel. This allows the wheel to be used in a nearly flat orientation when needed.
Models 28403 and 28413 have 3/8”-24 threads per inch spindles. They can use Type 27 Grinding Wheels with 3/8” center holes (CH).
Models 28405 and 28414 have 5/8”-11 threads per inch spindles and can use wheels with either 16 mm or 7/8” center holes (CH).
Models 28403 and 28413 can accomodate an adapter to change the spindle to a 5/8”-11 threads per inch spindle to allow the use of wheels with either 16 mm
or 7/8” center holes (CH).
Refer to ANSI B7.1-2000 Safety Requirements for Use, Care and Protection of Abrasive Wheels and ISO/EN 12413 Safety Requirements for Bonded Abrasive
Products for proper abrasive wheel applications.
MOUNTING 3/8” CENTER HOLE TYPE 27 WHEELS
Figure 1
Lower Flange for 3/8” CH
Type 27 Wheels
Lower Flange: NOTE:
Curved surface goes into
the wheel’s center
Upper Flange for 3/8” CH
Type 27 Wheels
Upper Flange:
NOTE: Wheel’s curved backside
goes into the flange’s center
Type 27 Wheel with 3/8”
Center Hole, properly
mated to Upper Flange
Lower Flange for 3/8” CH
Type 27 Wheel properly
mounted
Figure 2
Figure 3a
Figure 3b
11
DUAL SIZE FLANGES FOR 3/8-24 SPINDLE TOOLS
Models 28403 and 28413 can take a Dual Size Flange Set to allow the use of wheels with either 16 mm or 7/8” center holes (CH).
NOTE: Both flanges must face the wheel with the same size lip inserted in the wheel’s center hole.
MOUNTING 7/8” CENTER HOLE TYPE 27 WHEELS
Type 27 Wheels with 7/8” center holes (CH) may use flat flanges that have a 7/8” lip to center the wheel.
Figure 4
Figure 5
Figure 6
Figure 6A
Figure 6B
Figure 7
Figure 8
5/8”-11 threads per
inch Spindle with Upper
Flange properly
mounted
For Wheels less than
3/8” thick: Lower Flange
for 7/8” Type 27 Wheels
properly mounted
For Wheels 3/8” thick
and Greater: Lower
Flange for Type 27, 7/8”
Center Hole Wheels.
Note 7/8” lip is
facing the
wheel
Dual Size Flanges for 16 mm and 7/8” CH Wheels
Side A: 16 mm lip
Side B: 7/8” lip
7/8” lip
3/8”-24 Spindle
Dual Size Flange ready for a
7/8” CH Wheel
Type 27 Wheel with 7/8”
CH properly centered
on Flange
NOTE: Depressed
Center of
Wheel
NOTE: 7/8” lip to center the wheel
Flanges for Type 27 7/8” Center Hole Wheels
Side A, 7/8” lip
Side B, no lip
11
12
3M™ Fibre Disc Mounting Hardware and Usage
Fibre Discs are a non-bonded abrasive disc, (not a wheel) and may be mounted to Grinders for some similar metal working applications as Type 27 Wheels.
FIBRE DISC MOUNTING HUBS AND DISC PLATES
The Hub attaches to the spindle of the tool. It provides a mounting base for the Disc Pad Face Plate.
Figure 11
Figure 12
Figure 13
Figure 9
Figure 10
Hubs for Fibre Disc Mounting:
3M PN 28442 Disc Pad Hub for Short Shaft Tools 3/8-24 INT, 5/8-11 EXT
3M PN 28476 Low Profile Disc Pad Hub 5/8-11 INT
Type 27 Wheel with 7/8” CH
properly mounted to Upper
Dual Size Flange
Dual Size Lower Flange
properly mounted with 7/8”
CH Type 27 Wheel
5/8”-11 Threads per inch Spindle
3M PN 28476 Low Profile Disc Pad Hub 5/8-11 INT properly
mounted on 5/8-11 Spindle
3/8”-24 Threads per inch Spindle
16 mm lip
NOTE: Depressed Center
of Wheel
13
DISC RETAINER NUT AND TN QUICK CHANGE CENTER THREADED FIBRE DISCS
Fibre Discs can be held in place by a Disc Retainer Nut or by a pre-installed threaded center hub on the Fibre Disc itself (TN Quick Change System).
NOTE: Endure TN Quick Change Disc or Disc Retainer Nut are fully tightened onto the 5/8-11 spindle.
NOTE: A Disc Retainer Nut is not required if a TN Quick Change disc is mounted.
Figure 16
Figure 17
Figure 18
Figure 14
Figure 15
3M PN 28442 Disc Pad Hub
for Short Shaft Tools 3/8-24
INT, 5/8-11 EXT
NOTE: 3/8-24 Tool
Spindle Inside 5/8-11
Hub Spindle
3M PN 02618 Disc Retainer Nut 5/16” x 5/8-11 INT
Fibre Disc with TH Quick Change Center 5/8-11 INT
TN Quick Change Disc properly mounted
Disc Retainer Nut properly mounted
Disc Pad Face Plate properly
mounted to Hub
NOTE: Ensure Face Plate is
fully pressed onto Hub
and that ribs are
visible
Face Plate
Hub
Ribs
13
14
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 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 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. For additional assistance call 1-800-362-3550.
Product Repair after Warranty Has Expired:
Repair of 3M Abrasive Power tools that are not under warranty is available through 3M or a 3M Authorized Tool
Repair Representative. Contact your 3M Abrasive Power Tool Distributor for details, or call 1-800-362-3550.
For 3M Product Information Call:
800-3M HELPS (800-364-3577) toll free
651-737-6501 direct dial
Abrasive Systems Division
3M Center
St. Paul, MN 55144-1000
www.3M.com/abrasives
© 3M 2015.
3M and Roloc are trademarks of 3M Company.
34-8707-1833-4
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