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Product Configuration/Specifications:

Model 

Number

Pad Size 

mm (in)

Replacement 

Disc Pad 

Number

Collet Size

Spindle 

Thread

Product Net Wt. 

kg (lb)

Length 

mm (in)

*Noise Level 

dBA Pressure 

(Power)

**Vibration 

Level  

m/s

2

 (ft/s

2

)

**Uncertainty 

K m/s

2

28547

78 (3)

45091

1/4 in

1/4 in -20 T

0.81 (1.79)

122 (4.80)

74 (85)

2.05 (6.73)

0.70

64874

78 (3)

45091

6 mm

1/4 in -20 T

0.81 (1.79)

122 (4.80)

72 (83)

2.59 (8.50)

0.75

64875

51 (2)

45096

NA

1/4 in -20 T

0.81 (1.79)

122 (4.80)

76 (87)

2.01 (5.89)

0.65

* Declared noise levels; measurements carried out in accordance with standard EN ISO 15744. 
** Declared vibration levels in accordance with EN ISO 12096; measurements carried out in accordance with Standard  EN ISO 28927-3.

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. 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”.

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 

Size - Minimum

Recommended Maximum

Hose Length

Air Pressure

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

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.

Summary of Contents for 28547

Page 1: ... be used with this tool Use in any other manner or with other accessories could lead to unsafe operating conditions Do not use disc pads that have a Max RPM less than the tool Max RPM rating Summary of device labels containing safety information Marking Description W WARNING READ AND UNDERSTAND INSTRUCTION MANUAL BEFORE OPERATING TOOL W WARNING ALWAYS WEAR APPROVED EAR AND EYE PROTECTION W WARNING...

Page 2: ...es 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 r...

Page 3: ...ng 626ZZ 1 16 Rear Plate 1 17 Spring Pin 2 18 Rotor 1 Figure NO Description PCS 19 Rotor Blade 5 20 Cylinder 1 21 Front Plate 1 22 Ball Bearing 1 23 Front Housing 1 24 Anvil Bushing 1 25 Spindle 1 26 Spindle Joint 1 27 3 in Roloc Disc Pad Hard 1 28 Collect Spindle 1 29 Collect 1 4 in for Model 28547 1 29 Collect 6 mm for Model 64874 1 30 Collect Nut 1 31 Roloc Shank 1 4 x 1 4 20 UNC 1 31 Roloc Sha...

Page 4: ...1 9 1 Screw 1 10 Trigger 1 10 1 O Ring 1 11 O Ring 2 12 Valve Body 1 13 Spring 1 Figure NO Description PCS 14 Detent Ball 1 15 Ball Bearing 626ZZ 1 16 Rear Plate 1 17 Spring Pin 2 18 Rotor 1 19 Rotor Blade 5 20 Cylinder 1 21 Front Plate 1 22 Ball Bearing 1 23 Front Housing 1 24 Anvil Bushing 1 25 Spindle 1 26 Spindle Joint 1 27 2 in Roloc Disc Pad Hard 1 28 Wrench 17mm 2 NOTE In anticipated applic...

Page 5: ... Spindle to secure the output shaft Use the open end wrench to loosen the Spindle and remove it from the output shaft 3 Attach the Collet Spindle 28 to the output shaft and tighten using the 4 mm Hex Wrench and the appropriate open end wrench 4 Insert the Collet 29 into the Collet Spindle Attach the Collet Nut 30 onto the Collet Spindle but do not tighten completely 5 Insert the Roloc Shank 31 thr...

Page 6: ...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 ...

Page 7: ...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 mo...

Page 8: ...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 reas...

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