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Maintenance Instructions

Important:

A Preventative Maintenance Program is recommended whenever portable power tools are used.

Use only genuine Dynabrade replacement parts to insure quality. To order replacement parts, specify 

Model #

Serial #

and 

RPM

of your air tool.

It is strongly recommended that all Dynabrade rotary vane air tools to be used with a Filter-Regulator-Lubricator to minimize the possibility of misuse due
to unclean air, wet air or insufficient lubrication. Dynabrade recommends the following: 11405 Air Filter-Regulator-Lubricator (FRL) – Provides accurate
air pressure regulation and two stage filtration of water contaminants. Operates 40 SCFM/1,133 LPM 2 100 PSIG with 3/8" NPT female ports.

Dynabrade recommends one drop of air lube per minute for each 20 SCFM (example: if the tool specification states 40 SCFM, set the drip rate on the 
filter-lubricator to 2 drops per minute). Dynabrade Air Lube (P/N 

95842

: 1 pt 473 mi) is recommended.

Routine Preventative Maintenance: 

Check free speed of Extension Cut-Off Tools by using a tachometer. This governor controlled extension cut-off wheel

should be speed checked every 20 hours of use or weekly, whichever occurs more frequently.

DO NOT disassemble the governor for any reason. Reorder correct speed – governor assembly (See Assembly Breakdown) and recheck free speed of 
tool with a tachometer.

Mineral spirits are recommended when cleaning the tool and parts. Do not clean tool or parts with any solvents or oils containing acids, esters, 
ketones, chlorinated hydrocarbons or nitro carbons.

DO NOT clean or maintain tools with chemicals that have a low flash point (example: WD-40

®

).

A Motor Tune-Up Kit (P/N 

96532

) is available which includes high wear and medium wear motor parts.

Air tool labels must be kept legible at all times, if not, reorder label(s) and replace. User is responsible for maintaining specification information i.e.:
Model #, S/N, and RPM. (See Assembly Breakdown)

Blow air supply hose out prior to initial use.

Visually inspect air hoses and fittings for frays, visible damage and signs of deterioration. Replace damaged or worn components.

Refer to Dynabrade's Warning/Safety Operating Instructions Tag (Reorder No. 

95903

) for safety information.

After maintenance is performed on tool, add a few drops of Dynabrade Air Lube (P/N 

95842

) to the air line and start the tool a few times to lubricate air motor. 

Check for excessive tool vibration.

Handling and Storage:

Use of tool rests, hangers and/or balancers is recommended.

Protect tool inlet from debris (see Notice below).

DO NOT carry tool by air hose.

Protect abrasive accessories from exposure to water, solvents, high humidity, freezing temperature and extreme temperature changes.

Store accessories in protective racks or compartments to prevent damage.

DO NOT use cutting-off wheels that show signs of cracks, nicks or other defects.

Notice

All Dynabrade motors use the highest quality parts and metals available and are machined to exacting tolerances. The failure of quality pneumatic motors
can most often be traced to an unclean air supply or the lack of lubrication. Air pressure easily forces dirt or water contained in the air supply into motor
bearings causing early failure. It often scores the cylinder walls and the rotor blades resulting in limited efficiency and power. Our warranty obligation is
contingent upon proper use of our tools and cannot apply to equipment which has been subjected to misuse such as unclean air, wet air or a lack of
lubrication during the use of this tool.

One Year Warranty

Following the reasonable assumption that any inherent defect which might prevail in a product will become apparent to the user within one year from the
date of purchase, all equipment of our manufacture is warranted against defects in workmanship and materials under normal use and service. We shall
repair or replace at our factory, any equipment or part thereof which shall, within one year after delivery to the original purchaser, indicate upon our
examination to have been defective. Our obligation is contingent upon proper use of Dynabrade tools in accordance with factory recommendations,
instructions and safety practices. It shall not apply to equipment which has been subject to misuse, negligence, accident or tampering in any way so as to
affect its normal performance. Normally wearable parts such as bearings, contact wheels, rotor blades, etc., are not covered under this warranty.

Machine Specifications

3

Model

Motor

Motor

Sound

Air Flow Rate

Air Pressure

Spindle

Weight

Length

Height

Number

HP (W)

RPM

Level

CFM/SCFM (LPM)

PSIG (Bars)

Thread

Pound (kg)

Inch (mm)

Inch (mm)

52576

1 (744)

15,000

80 dB(A)

5/39 (1104)

90 (6.2)

3/8"-24 male

3.9 (1.8)

15" (381)

3-1/8" (81)

52577

1 (744)

18,000

81 dB(A)

5/40 (1133)

90 (6.2)

3/8"-24 male

3.9 (1.8)

15" (381)

3-1/8" (81)

52578

1 (744)

20,000

80 dB(A)

6/44 (1256)

90 (6.2)

3/8"-24 male

3.9 (1.8)

15" (381)

3-1/8" (81)

52579

1 (744)

15,000

80 dB(A)

5/39 (1104)

90 (6.2)

3/8"-24 male

4 (1.8)

14-7/8" (378)

4-1/2" (113)

52580

1 (744)

18,000

81 dB(A)

6/40 (1133)

90 (6.2)

3/8"-24 male

4 (1.8)

14-7/8" (378)

4-1/2" (113)

Additional Specifications: Air Inlet Thread 3/8" NPT  •  Hose I.D. Size 3/8" or 10mm  •  Air Flow Rate Based At Max HP.  •  Air Pressure 90 PSIG Max

Summary of Contents for 52576

Page 1: ...d applicable State and Local Regulations SAVE THIS DOCUMENT EDUCATE ALL PERSONNEL SAFETY INSTRUCTIONS Carefully Read all instructions before operating or servicing any Dynabrade Abrasive Power Tool Products offered by Dynabrade are not to be modified converted or otherwise altered from the original design without expressed written consent from Dynabrade Inc Tool Intent Abrasive Cut Off Tools are i...

Page 2: ...irmly in place Do not apply excessive force on tool or apply rough treatment to it Always work with a firm footing posture and proper lighting Report to your supervisor any condition of the tool accessories or operation you consider unsafe CUT OFF WHEEL MOUNTING Typical Mounting for Type 1 Cutting Off Wheels Mount reinforced cutting off wheel 1 8 3 0mm Maximum Thickness Use factory recommended fla...

Page 3: ...mmended Protect tool inlet from debris see Notice below DO NOT carry tool by air hose Protect abrasive accessories from exposure to water solvents high humidity freezing temperature and extreme temperature changes Store accessories in protective racks or compartments to prevent damage DO NOT use cutting off wheels that show signs of cracks nicks or other defects Notice All Dynabrade motors use the...

Page 4: ...Remove housing and 51989 Repair Collar and lay repair collar on bench with flange facing down so the collar is supported by throttle lever Place a 3 32 2 4mm drift pin on 96444 Pin and tap pin thru housing 6 Remove 51946 Valve Stem Assembly Remove 96443 O Ring from 51946 Valve Stem Assembly Housing Disassembly Complete Assembly Instructions 1 Hp Cut Off Extension Tool Motor Assembly Important Be s...

Page 5: ...ng 27 Apply Loctite 567 or equiv to external threads on housing 28 Align 51936 Coupling insert onto 51935 Coupling in extension handle 29 Thread housing assembly onto extension handle 30 Secure front end of housing in a padded vise align the vise jaws with machined flat on the silver ring 31 Apply wrench at wrench flats on 51952 Extension Handle and torque handle onto housing to 28 N m 250 lbs in ...

Page 6: ...51949 Safety Lever Assembly 32 51946 Valve Stem Assembly Incl 96443 O Ring 33 51945 Valve Seat 34 51944 Tip Valve 35 51943 Spring 36 96442 O Ring 37 51940 Spacer 38 53682 Gasket 39 94528 Felt Silencer 40 53686 Muffler Cap 41 94924 Wave Spring 42 53683 Spacer 43 53681 Inlet Bushing Incl 2 51938 Screens 44 53655 Muffler Assembly 45 53690 Grip Index Key No Part Description 46 00001248 Warning Label 4...

Page 7: ...rt 1 X 13 96498 Wave Spring 1 T L 14 95438 O Ring 1 T X 15 53620 Adapter 1 X 16 54520 Bearing 1 T X 17 51951 Shim Pack 1 T X 18 51922 Front Bearing Plate 1 X 19 96441 Pin 1 X 20 51927 Spacer 1 T X 21 51921 Rotor 1 X 22 51926 Blade 4 Pkg 1 T X 23 51925 Cylinder 1 X 24 51923 Rear Bearing Plate 1 X 25 02057 Bearing 1 T X 26 96445 Pin 2 X 27 51924 Gasket 1 T X 28 See Note Governor Assembly 1 X 29 See ...

Page 8: ...ir Collar Specially designed collar for use in vise to prevent damage to valve body of tool during disassembly assembly 96005 Male Plug Provides up to twice the air flow compared to standard plug design Plug has ported design to prevent starving of the air tool 53621 Over Hose Assembly Over Hose Assembly directs exhaust away from operator Dynabrade Air Lube Formulated for pneumatic equipment Absor...

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