3
Disc Sanders INSTRUCTIONS MANUAL – 2 in (50 mm) 20,000 RPM .33 HP,
2 in (50 mm) 20,000 RPM .5 HP, 3 in (76 mm) 15,000 RPM 1 HP
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
This pneumatic tool is designed to be used with the sander adaptor, disc pad, and appropriate abrasive for sanding metals, wood, stone, plastics and other
materials. Additionally, when used with the collet chuck it may also function as a Die Grinder. It should only be used for such sanding and die grinding 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 back up pads that have a Max RPM less than the tool Max RPM rating.
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, disc pad, 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 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 without all safety features in place and in proper working order.
• 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 abrasive disc pads and other accessories supplied by 3M.
• Prior to use, inspect abrasive product, disc pad, and other accessories for possible damage. If damaged, replace with new abrasive product and
accessories available from 3M.
Original Instructions
1
Parts Page
PARTS LIST FOR PT# 20230 & 25123, 20000 RPM, 2”, .33 HP DISC SANDER
3M Part
Fig. #
14
15
16
17
18
19
20
21
Number Description
06548
06624
06547
06641
06532
06531
06509
06519
06533
Front End Plate
Front End Plate Spacer
Rotor
Vane, Set of 3
Cylinder
Rear End Plate
Ball Bearing
Retaining Ring
Housing Assembly
(Includes Figures 23-32)
Socket Head Cap Screw,
4-40 (2)
3M Part
22
Fig. #
Number Description
1
2
3
3
3
3
3
4
5
6
7
8
9
10
06582
06583
06528
06529
06530
06540
06541
06516
06633
06581
06611
06645
06505
06551
Sander Adapter
Collet Body
Collet (1/4”)
Collet (1/8”)
Collet (3/16”)
Collet (3 mm)
Collet (6 mm)
Collet Nut
Lock Nut
Output Shaft
23
06500
24
25
26
27
28
29
30
31
06512
06536
06517
06514
06537
06515
06535
06502
O-Ring
Speed Control Valve
Spring
Rubber Valve
Valve Plunger
O-Ring (2)
Valve Body
Screw 8-32 x 3/16”
Pan Phil Mac
Safety Lever Assembly
Grip
Silencer Pad
O-Ring
Washer
Inlet Adapter
Screen
Ball Bearing
Bevel Gear Set
Needle Bearing
Angle Head Assembly
(Includes Figures 9 & 11)
Grease Fitting
Clamp Nut
32
33
34
35
36
37
38
39
06538
06606
06539
06513
06525
06534
06623
06586
11
12
13
06523
06549
06510
Ball Bearing
3/8” x 7/8” x 9/32”
7/16” x 11/16” Wrench (2)
3
Parts Page
PARTS LIST FOR PT# 20231 & 25124, 20000 RPM, 2”, .5 HP DISC SANDER
3M Part
Fig. #
Number Description
10
06580
Angle Head Assembly
(Includes Figures 9 & 11)
Grease Fitting
Clamp Nut
Retaining Ring
Ball Bearing
Front End Plate
Front End Plate Spacer
Rotor
Vane, Set of 5
Cylinder Liner
Rear End Plate
Ball Bearing
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
06523
06636
06619
06611
06629
06624
06634
06647
06631
06630
06612
06625
06626
06614
06620
06627
06613
06622
06616
06599
06635
06617
06632
06615
06621
06628
06618
06586
Housing
Trigger Valve Stem
Compression Spring
O-Ring
Air Regulator
Compression Spring
Steel Ball
3M Part
Fig. #
Number Description
1
2
3
3
3
3
3
4
5
6
7
8
9
06582
06583
06528
06529
06530
06540
06541
06516
06633
06581
06611
06645
06505
Sander Adapter
Collet Body
Pin
Collet (1/4”)
Collet (1/8”)
Collet (3/16”)
Collet (3 mm)
Collet (6 mm)
Collet Nut
Housing Cover, .5 HP
Paddle Assembly
Roll Pin
Muffler Material
Disc Spring
O-Ring
Lock Nut
Exhaust Deflector
Inlet Bushing
7/16” x 11/16”
Wrench (2)
Output Shaft
Ball Bearing
Bevel Gear Set
Needle Bearing
4
Parts Page
PARTS LIST FOR PT# 20232 & 25125, 15000 RPM, 3”, 1 HP DISC SANDER
3M Part
Fig. #
11
12
13
14
15
16
17
18
19
20
21
22
Number Description
06523
06653
06655
06520
06609
06510
06639
06562
06643
06563
06560
06527
Grease Fitting
Angle Head Clamp Nut
Lock Ring
Pin, 1/8” x 1/4”
O-Ring
Ball Bearing 3/8” x 7/8” x 9/32”
Front End Plate
Rotor
Vane, Set of 5
Cylinder
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
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
06508
06567
06568
06638
06558
06543
06511
06556
06501
06598
06642
06559
06566
06557
06552
06553
06554
06555
06608
06604
06605
06586
3M Part
Number Description
Fig. #
1
2
3
3
3
3
3
4
5
6
7
8
9
10
06582
06583
06528
06529
06530
06540
06541
06516
06578
06591
06507
06646
06505
06637
Sander Adapter
Collet Body
Collet (1/4”)
Collet (1/8”)
Collet (3/16”)
Collet (3 mm)
Collet (6 mm)
Collet Nut
Bearing Retainer
Output Shaft
Regulator
Screw, 6-32 x 3/4” Set Soc Hex
Housing Cover
Lever
Groove Pin, 1/8” x 7/8” Type E
Warning Label
Muffler
Throttle Valve Seat
Throttle Valve
Taper Spring
Ball Bearing
Screen
Spiral Bevel Gear Set
Needle Bearing
Angle Head Assembly
(Includes Figures 9 & 11)
O-Ring, 1/16” x 5/8” x 3/4”
Rotatable Exhaust Deflector
Inlet Bushing
7/16” x 11/16” Wrench (2)
5
Product Configuration/Specifications:
Model
Number
** Vibration
Level
Configured as
Grinder
Collet
Pad
Type
Pad Speed Power Product
Height
mm (in.) dBA Pressure
(Power)
*Noise Level ** Vibration ** Uncertainty K
** Uncertainty K
Configured as
Grinder
2
m/s
Part RPM (hp)
Net
Wt.kg.
(lb.)
Level
m/s (ft/s )
2
2
2
m/s
2
2
m/s (ft/s )
7.57 (24.9)
7.57 (24.9)
7.41 (24.4)
7.41 (24.4)
4.87 (16.0)
4.87 (16.0)
20230 1/4”
25123 6 mm
20231 1/4”
25124 6 mm
20232 1/4”
25125 6 mm
2” Roloc
Hard
2” Roloc
Hard
3” Roloc
Hard
0.49 (1.08) 63.5 (2.5)
0.49 (1.08) 63.5 (2.5)
0.58 (1.28) 69.9 (2.75) 89.3 (100.9) 6.56 (21.6)
0.58 (1.28) 69.9 (2.75) 89.3 (100.9) 6.56 (21.6)
0.89 (1.97) 82.6 (3.25) 84.5 (95.1) 5.98 (19.7)
0.89 (1.97) 82.6 (3.25) 84.5 (95.1) 5.98 (19.7)
82.4 (94)
82.4 (94)
3.25 (10.7)
3.25 (10.7)
1.625
1.625
2.624
2.624
2.392
2.392
3.028
3.028
2.964
2.964
1.948
1.948
88746 20,000 0.33
88746 20,000 0.5
45091 15,000
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 8662-8:1997 for disc sander
application and EN ISO 8662-13:1997 for die grinder application. 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. 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
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 sander can develop a torque reaction. See the section “SAFETY PRECAUTIONS”.
Ensure that all abrasive articles are mounted concentrically on the supporting disc pad.
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 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
3/8 in
8 meters
Maximum Working Pressure 6.2 bar
90 psig
Recommended Minimum
NA
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 fluid 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.
6
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. Attach the
3M™ Roloc™ Disc Pad to the sander adaptor using the wrenches
supplied with the tool. Select a suitable abrasive and secure it to the
back up pad.
4. Always wear required safety equipment when using this tool.
5. When sanding always start the tool just prior to contacting the work
piece. Stop air flow to the tool as it is removed from the work piece.
6. Always remove the air supply to the sander before fitting, adjusting
or removing the abrasive or disc pad.
To Tool Station
Filter
Ball
Valve
Regulator
Lubricator
Ball Valve
Air Flow
Air Dryer
Drain Valve
7. Always adopt a firm footing and grip and be aware of torque
reaction developed by the sander.
8. Use only 3M approved spare parts.
9. Always ensure the material being worked is firmly fixed to avoid
movement.
Air Hose
To Coupler
at or near Tool
Air Compressor
and Tank
10. 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.
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. Dust can be highly combustible.
Figure 1
3M™ Roloc™ Disc Pads
3M™ Roloc™ Disc Pads are perfectly mated for use on the 3M Sander.
Constructed from premium, industrial-quality materials and their durability and
precise construction are the ideal complement to the performance of the 3M
Sander. See Product Configuration/Specifications table for the correct
replacement pad for a particular model.
13. Do not exceed maximum recommended air pressure. Use safety
equipment as recommended.
14. Prior to installing any sanding or polishing accessory, always check
that it’s marked maximum operating speed is equal or higher than
the rated speed of this tool.
See 3M ASD Accessory catalog 61-5002-8098-9 and Fantastic Finishes & More
catalog 61-5002-8097-1 for additional Disc Pads and Accessories.
15. 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.
16. This tool is not protected against hazards inherent in grinding and
cutting operations, which require a guard, and no such grinding and
cutting products should ever be attached.
17. 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.
18. Keep hands clear of the spinning pad during use.
19. If the tool appears to malfunction, remove from use immediately and
arrange for service and repair.
Removing the sander adaptor and installing the
collet chuck
1. Disconnect air line from tool.
2. Using the wrenches supplied with the tool, secure the output shaft with one
of the wrenches. Loosen the sander adaptor with the other wrench. Remove
the sander adaptor and store in a safe place for use at another time.
3. Thread the collet chuck supplied with the tool into the threaded hole vacated
by the sander adaptor.
4. Tighten the base of the collet chuck with the two wrenches.
5. Loosen the collar of the chuck to allow the appropriate shank to be inserted
(¼ in collet insert is used for ¼ in shanks, 6 mm collet insert is used for
6 mm shanks).
6. Insert shank completely into the collet and tighten with the two wrenches.
An inadequately inserted shank could bend or break causing damage to the
tool and work piece and possible injury to the operator or bystanders.
20. 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.
21. When tool is not in use, store in a clean dry environment free of
debris.
22. Recycle or dispose of tool according to Local, State, and Federal
regulations.
7
Product Use: All statements, technical information and
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.
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 and Roloc are trademarks of 3M Company
34-8701-2619-9
8
Contact: Michelle Dumas
Creator: deZinnia
Spec # 34-8701-2619-9
Structure: SS-12395
Ink: Black
Date: 07/23/08
Version 1
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