Dynabrade 57550 User manual

95979 Pin
57547 Lever
57526 Housing
95697 Snap Ring
01025 O-Ring (2)
01477 Valve Stem
57064 Speed Regulator
Always operate, inspect and maintain this tool in accordance with the Safety Code for portable air tools
(ANSI B186.1) and any other applicable safety codes and regulations. Please refer to Dynabrade's
Warning/Safety Operating Instructions for more complete safety information.
WARNING
!
Parts Page Reorder No. PD 97•12
Effective March, 1997
Supercedes PD95•06
Air-Powered, 2,400 RPM
Models:
57550 – Buffer
57551 – Mini Orbital Sander
57552 – 3-1/2" Disc Sander
57553 – Versatility Kit
57555 – 4"-5" Disc Sander
Palm-Style
Buffer/Sander
57054 Rear Ring
01206 Bearing
57056 Rear Bearing Plate
95971 Line-up Pin
57058 Cylinder Assembly
(Includes 95971 Line-up Pin)
54491 Blade (5) and
Rotor set
95975 Shim Pack
(4 pkg./as req.)
57437 Front Bearing Plate
56047 Rotor Key
57059 Lock Ring Seal
57055 Front Ring
95973 Washer
54470 Rotor Pinion 01468 Spring
01472 Tip Valve
01464 Seal
57065 Cone Muffler
01494 Inlet Bushing
54486 “Soft” Vinyl Face
54488 “Soft” Hook Face
54476 Mini-Orbital Head
3" – 50125 Pad
3" – 50120 Pad
4" - 5" – 50146 Pad
(See page 4 for
descriptions.)
Mini-Orbital Sanding Pads
(See page 4.) 3-1/2" Sanding Pad
See inside for Important Operating, Maintenance and Safety Instructions.
57066 Muffler Body
56027 Muffler Insert
56028 Muffler Cap
01139 Bearing
07146 Packing
01139 Bearing
54475 Shaft (2)
06213 Gears (2)
54465 Planetary Carrier
54468 Ring Gear
54467 Retaining Ring
95593 Set Screw
01139 Bearing
54021 Adapter
KEY
L
T
O
Loctite/Hernon: L2= Loctite #271
Torque: N•m x 8.85 = In. - lbs.
T2= 22.5 N•m, T3= 28 N•m
G
Oil Grease
T2L2
O
T3

Important Operating, Maintenance and Safety Instructions
Carefully read all instructions before operating or servicing any Dynabrade®Abrasive Power Tool.
Warning: Hand, wrist and arm injury may result from repetitive work motion and overexposure to vibration.
Important: All Dynabrade air tools must be used with a Filter-Regulator-Lubricator to maintain all warranties.
Operating Instructions:
Warning: Eye, face and body protection must be worn while operating power tools. Failure to do so may result in serious injury or death. Follow safety
procedures posted in workplace.
1. With power source disconnected from tool, securely fasten abrasive/accessory on tool.
2. Install air fitting into inlet bushing of tool. Important: Secure inlet bushing of tool with a wrench before attempting to install the air fitting to avoid damaging
valve body housing.
3. Connect power source to tool. Be careful not to depress throttle lever in the process.
4. Check tool speed with tachometer. If tool is operating at a higher speed than the RPM marked on the tool or operating improperly, the tool should be
serviced to correct the cause before use.
Maintenance Instructions:
1. Check tool speed regularly with a tachometer. If tool is operating at a higher speed than the RPM marked on the tool, the tool should be serviced to correct
the cause before use.
2. Some silencers on air tools may clog with use. Clean and replace as required.
3. All Dynabrade air motors should be lubricated. Dynabrade recommends one drop of air lube per minute for each 10 SCFM (example : if the tool
specification state 40 SCFM, set the drip rate of your filter-lubricator at 4 drops per minute). Dynabrade Air Lube (P/N 95842: 1pt. 473ml.) is recommended.
4. An air line filter-regulator-lubricator must be used with this air tool to maintain all warranties. Dynabrade recommends the following: 11289 Air Line Filter-
Regulator-Lubricator — Provides accurate air pressure regulation, two-stage filtration of water contaminants and micro-mist lubrication of pneumatic
components. Operates 40 CFM @ 100 PSI has 3/8" NPT female ports.
5. Use only genuine Dynabrade replacement parts. To reorder replacement parts, specify the Model #, Serial #, and RPM of your machine.
6. A motor tune-up kit (P/N 96107) is available which includes assorted parts to help maintain motor in peek operating condition.
7. Mineral spirits are recommended when cleaning the tool and parts. Do not clean tool or parts with any solvents or oils containing acids, esters, keytones,
chlorinated hydrocarbons or nitro carbons.
Safety Instructions:
Products offered by Dynabrade should not be converted or otherwise altered from original design without expressed written consent from
Dynabrade, Inc.
• Important: User of tool is responsible for following accepted safety codes such as those published by the American National Standards Institute (ANSI).
• Operate machine for one minute before application to workpiece to determine if machine is working properly and safely before work begins.
• Always disconnect power supply before changing abrasive/accessory or making machine adjustments.
• Inspect abrasives/accessories for damage or defects prior to installation on tools.
• Please refer to Dynabrade’s Warning/Safety Operating Instructions Tag (Reorder No. 95903) for more complete safety information.
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.
2
(PD97•12)
All Models 5" (127) 3-1/4" (83) 1.7 lbs. (.8 kg) 1/4"-20 male 18 (510) @80 dBA .25 (186) 2,400 90 (6.2)
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.
Model Length Height Machine Spindle Air Flow Rate Sound Motor Motor Air Pressure
Number Inch (mm) Inch (mm) Weight Thread SCFM (LPM) Level HP (W) RPM PSI (Bars)
Additional specifications: Air Inlet Thread 1/4" (6 mm) NPT • Hose Size 1/4" (6 mm)

Disassembly/Assembly Instructions - Palm-Style Buffer Sander
Important: Manufacturer’s warranty is void if tool is disassembled before warranty expires.
A Motor Repair Kit (96046) is available which contains special tools for disassembly/assembly. Please refer to parts breakdown for part identification.
Motor Disassembly:
1. Invert machine and secure in vise, using 57092 Collar (supplied in 96046 Repair Kit) or padded jaws.
2. Remove any accessories attached to 54021 Adapter.
3. Insert 56058 Lock Ring Wrench (supplied in 96046 Repair Kit) into corresponding tabs of lock ring and unscrew. Motor may now be lifted out for service.
4. Remove lock-ring, washer, front ring and rear ring from motor.
5. Remove 54021 Adapter by removing 95593 Set Screw using 5/64" allen wrench (supplied in 96046 Repair Kit). Place allen wrench into set screw hole to
stop rotation of 54465 Planetary Carrier. Use a 14mm wrench to unscrew adapter (supplied in 96046 Repair Kit).
6. Remove 54467 Retaining Ring using two (2) 50679 26mm wrenches (supplied in 96046 Repair Kit).
7. Remove 54465 Planetary Carrier by pressing out from 01139 Bearing. 06213 Gears can now be removed from planetary carrier.
8. Remove 54468 Ring Gear by tapping retaining ring on a hard surface, once the ring gear slides towards the front, it will be necessary to use your fingers to
remove it the rest of the way. Note: If hard to remove, heat may be applied to retaining ring and pliers used to remove gear the rest of the way.
9. Press 01139 Bearing from 54467 Retaining Ring.
10. Remove 57056 Rear Plate by holding onto 57058 Cylinder (bearing puller may be placed into exhaust slots on cylinder) and pressing 54470 Rotor Pinion
out of 01206 Bearing.
11. Remove 54491 Blade (5) and rotor set. Remove 56047 Rotor Key.
12. Disassemble 57437 Front Plate by pressing 54470 Rotor Pinion through front plate. Note: One 01139 Bearing will remain on rotor pinion. To remove,
press pinion through remaining bearing.
13. Press 01206 Rear Bearing from 57056 Rear Bearing Plate.
Motor disassembly complete.
To Reassemble:
Important: Be certain all parts are clean and in good repair before assembling.
1. Press 01139 Bearing onto rotor pinion until seated against shoulder.
2. Press bearing/rotor pinion assembly into 57437 Front Plate and check for smooth rotation.
3. Place 07146 Packing in front plate bore and press 01139 Bearing into bore onto packing.
4. Invert rotor pinion in support. Install 56047 Rotor Key and 54491 Blade and rotor set onto rotor pinion.
Important: Place the correct number of shims from the 95975 Shim Pack under rotor to achieve a 0.0015" space between rotor and front plate.
Note: Blades should be lightly lubricated with Dynabrade Air Lube P/N 95842 (or equivalent) before installation into rotor slots.
5. Place 57058 Cylinder Assembly over rotor. The ”short” line-up pin goes toward the front plate.
6. Place 57056 Rear Plate (with 01206 Bearing pressed into place) over shaft and ”long” end of line-up pin. Press fit in place.
7. Press 01139 Bearing into 54467 Retaining Ring.
8. Place 54468 Ring Gear into 54467 Retaining Ring lining up one of the notches with set screw hole.
9. Place 54465 Planetary Carrier with 06213 Gears and 54475 Shafts in place into 54467 Retaining Ring (1/4"-28 female thread, facing down).
Note: Gears should be lightly greased with Dynabrade's 95542 Grease (or equivalent).
10. Align 54465 Planetary Carrier with splined end of 54470 Rotor Shaft.
11. Screw retaining ring assembly onto front plate and tighten using (2) 26mm wrenches.
12. Place 5/64" allen wrench into retaining ring set screw hole and tighten 54021 Adapter with 14mm wrench.
13. Hand tighten 95593 Set Screw in place using 5/64" allen wrench. Note: Be sure notch on ring gear is lined up with set screw hole.
14. Place 57054 Rear Ring over the rear plate and line-up pin. Turn motor over and install 57055 Front Ring over front plate. Make sure the “legs and fingers”
on the rings line-up. Also, the small cut-outs on both rings should line-up with the square holes in the cylinder/end plate assembly.
15. Secure motor housing in vice using 57092 Collar or padded jaws. Slide motor assembly into housing. Note: Be certain line-up pin enters the line-up hole
at bottom of housing bore and the “legs” of the rings stay in-line.
16. Place 95973 washer and 57059 Lock Ring onto the Front Ring with 1 drop of pneumatic tool oil spread between the washer and lock ring. Tighten lock ring
with 56058 Lock Ring Wrench torque to 28 N•m/250 in. - lbs.
17. Attach desired accessory to adapter.
Tool assembly is complete. Please allow 30 minutes for adhesives to cure before operating tool.
Important: Motor should now be tested for proper operation at 90 PSI. If motor does not operate properly or operates at a higher RPM than marked on the
tool, the tool should be serviced to correct the cause before use. Before operating, place 2-3 drops of Dynabrade Air Lube (P/N 95842) directly into air inlet
with throttle lever depressed. Operate tool for 30 seconds to determine if tool is operating properly and to allow lubricating oils to properly penetrate motor
Loctite® is a registered trademark of Loctite Corp.
3

Terry Cloth Synthetic Wool Foam Waffle
Finesse Sanding Creme
• A sanding compound for metal,fiberglass and
composites. Use with fine-grade sanding discs.
95723: 4 oz. (118 ml).
95724: 1 qt. (946 ml).
95725: 1 gal. (3.8 l)
Dynabrade Glaze
• For use with slow-speed tools to achieve a high
gloss after compounding.
95727: 4 oz. (118 ml). 95728: 1 qt. (946 ml).
Finesse
Sanding
Creme
Dynabrade
Glaze
3" Diameter Hook Face Pads
50120: Foam Backing
50125: Rigid Backing
4" - 5"Diameter Hook Face Pads
50146: Rigid Backing
• Accepts reattachable abrasive discs as well as polishing buff pads.
• 6,000 RPM maximum.
• 1/4"-20 female thread.
Rigid
Backing
Foam
Backing
96107 Motor Tune-Up Kit:
• Includes assorted parts to help maintain
motor in tip-top shape.
96046 Motor Repair Kit:
• Contains special tools for disassembly/assembly
of machine.
Optional Accessories
DYNABRADE
®
DYNABRADE, INC., 8989 Sheridan Drive • Clarence, NY 14031-1490 • Phone: [phone] • Fax: [phone] • International Fax: [phone]
DYNABRADE EUROPE S.àr.l., Zone Artisanale • L-5485 Wormeldange—Haut, Luxembourg • Telephone: [phone] • Fax: [phone]
©DYNABRADE, INC., 1997 PRINTED IN USA
Visit our new Web Site via Industry.Net MROP On-Line: http://www.dynabrade.industry.net E-Mail: DynaT[email protected]
Polishing/Buffing Pads (Hook Face Backing)
Diameter Part Description
3" 90027 Terry Cloth
3" 90028 Synthetic Wool
3" 90030 Foam Waffle
3" 90038 Foam Flat Face
3-1/2" 90034 Natural Wool
• Scrim back.
• Mount to 50120 or 50125 Hook Face Pads.
1/4" Sponge
60 Duro
Rubber
1/4"-20
Female
Thread
1/4"-20
Female
Thread
Order vinyl face pads 54091 or
54092 for wet sanding operations. For use with abrasive impregnated non-woven nylon discs.
"Soft” Density
All pads are 5,000 RPM maximum.
"Medium” Dual-Density "Hook 'n Loop”
54017 3/4" Medium/Rubber 1/4"-20 Female For PSA Discs
54018 1-1/4" Medium/Rubber 1/4"-20 Female For PSA Discs
54031 1-1/4" Soft Locking-Type For PSA Discs
54085 3/4" Very Soft 1/4"-20 Female For PSA Discs
54086 1-1/4" Very Soft 1/4"-20 Female For PSA Discs
54087 3/4" Soft/Vinyl 1/4"-20 Female For PSA Discs
54088 1-1/4" Soft/Vinyl 1/4"-20 Female For PSA Discs
54089 3/4" Hook ‘n Loop 1/4"-20 Female Non-Woven Nylon Discs
54090 1-1/4" Hook ‘n Loop 1/4"-20 Female Non-Woven Nylon Discs
54091 3/4" Medium/Vinyl 1/4"-20 Female For PSA Discs
54092 1-1/4" Medium/Vinyl 1/4"-20 Female For PSA Discs
Part Pad Description/ Thread
No. Dia. Face Type Comments
“Very Soft” Density 1/4"-20
Female
Thread
1/4"-20
Female
Thread
For optional 54029,54030
or 54035 Sanding Head. Sponge
Locking-Type
Male Thread
“Soft” Locking-Type
Vinyl Face
1/4"
Sponge
3/8"
Sponge