Fluid Dynamic Bearings

Page *New product introduction:FDB ( Fluid Dynamic Bearing )Presentation to customer

*

Page *Content

Comparison of individual types of bearingFDB introductionFDB performance / reliabilitySummary of FDBAppendix

Page *1. Comparison of individual types of bearing Sleeve bearing;

Dual ball bearing;

1 Ball,1 Sleeve bearing;

FDB (new product in 2004Q2)

1-1 Bearing types ADDA provides

Page *1-2 The comparison analysis table1. Comparison of individual types of bearing

SleeveHypro1B1S2BBFDBRelease Year19891992198919892002Cost RangeLowestLowerMiddleHigherHigherNoise(Only Rotor /AD9225 / 3100 rpm / 0.3m) Higher26dB(A)Middle25dB(A)Highest27dB(A)Lower24.4dB(A)Lowest& Stable21.3dB(A)Life Expectancy(Hours/L10/ 40)31,00040,00050,00050,00060,000Operation TemperatureUnder 70Under 70Under 70Under 90Under 90RecommendationEasy to Oil LeakageEasy to Oil leakageIt should be protected by protective structure.NoisyReplace 2BBApply toPower Supply, Case fanN/B, Case Fan, VGA coolerN/B, Hub, CPU cooler,ProjectorN/B, Projector, PDP-TV, VGA cooler, ServerPDP-TV, N/B,Projector

Page *

Air flowPressureNoiseCurrentBetterFDB fan performs the better performance by air flow , pressure,noise , power consumption before 7 days of burn-in(90 degreeC]

1-3 Before Burn-in Test [Type:AD0612- FDB/2BB]1. Comparison of individual types of bearing

Page *Air flowPressureNoiseCurrent

BetterFDB fan performs the better performance by air flow , pressure,noise , power consumption after 7 days of burn-in(90 degreeC]

1-3 After Burn-in Test [Type:AD0612- FDB/2BB]1. Comparison of individual types of bearing

Page *2. FDB introduction FDB : Fluid Dynamic Bearing

2-1 Design conceptBearing can endure high temperatureNo mechanical contact during revolutionNo oil reductionNo oil quality changeNo oil leakage structure

Page *2. FDB introduction 2-2 FDB structureOur FDB performs longer life by no metal contact with shaft to bearing

Page *2. FDB introduction 2-3 Types of FDB structure(A)Open type(B)Closed typeOur FDB is (B) Closed type.On case of using material of FDB by powder(with hole), it is notOccur of oil flew out. Then it can keep long term life.

Page *2. FDB introduction 2-4 The comparison analysis table Our FDB can support the long term life thru no metal contactwith shaft to bearing.

LifeContactContact MaterialSLEEVE Bearing 31,000 Hours @ 40 oC / 65%SlideOil to MetalBALL Bearing50,000 Hours @ 40 oC / 65% RollingGreaseFDB60,000 Hours @ 40 oC / 65%Oil with high pressure to Shaft float upOildescription3700RPM,AB0612

Page *2-5 Motor design of conventional bearing and FDB2. FDB introduction

Page *2. FDB introduction 2-6 FDB structure with fan other componentsRemark: Oil seal structure (repellent material) is not shown

EMBED AutoCAD.Drawing.15

_1080216502.dwg

Page *Major advantages over conventional bearingsDesign:

Dynamic pressure built-up centering the shaft

- lubricating oil pressure gained by the shaft rotation

2. FDB introduction 2-7 FDB FeaturesNo metal surface contact

- lubricating oil between shaft and bearing - no metal-to-metal contact - lower noise - longer operating life


Vacuum impregnating oil

- no air bubbles - no oil leakage due to air pressure variation - higher level non-operational shock resistance2. FDB introduction 2-7 FDB Features


Capillary seal structure

- Lubricating oil leakage protection - Reliable even at higher temperature condition - Complete seal, not affected by mechanical position change - Less than 1% oil evaporation under 60oC, 30000Hrs aging test2. FDB introduction 2-7 FDB Features


FDB module

- More reliable manufacturing - Smart enabling technology - Easily adopted to various fan sizes - Less components (no washer)2. FDB introduction 2-7 FDB Features

Page *3. FDB life test / reliability 3-1 Fan motor speed vs Time(Hr)Remark: Test condition : temperature 80; Start/stop cycle mode 0 8000rpm , 60X60X12mm blowerLess than 3% fan speed change after 145 days

Graph1

53905260527053055255

53015197519852455169

52995165513851985084

52665170520052205190

53115181519052335120

53465173521952525177

52905120518052005170

No.1

No.2

No.3

No.6

No.9

Time (Hr)

RPM

Fan motor speed vs Time(Hr)

Sheet1

(54B0H1000H

5000r/min 10kHzOA)10kHz)10kHz)10kHz)

1GB50dBA50dBA50dBA

0(r/min)0(mA)((mg)VH

153902243213.2377.9-42.78-46.0049.7542.383849.7547.61

252602264418.4577.5-42.07-44.0049.2042.488249.2047.34

352702249422.5778.1-38.87-44.9648.9442.411248.9446.59

4540022610014.1908.2-40.58-43.2348.8342.393849.2147.35

5540022626015.62597.9-41.9-45.5948.6042.309648.9147.95

653052262479.12487.9-41.41-44.5849.2142.3800

753402263348.73347.7-40.32-45.0148.8142.4225

853102323923.2387.9-39.83-44.4648.8942.0969

9525522225535.82267.7-41.22-45.1248.9142.3384

105350232464.1728.5-41.76-44.8548.8742.3554

5328226.416.57.93-41.074-44.7849.0042.3580

540023235.88.5-38.87-43.2349.7542.4882

52552224.17.5-42.78-4648.6042.0969

56.83.29.10.31.20.80.320.1040

0H500H

0(r/min)0(mA)

15390224530122589-142.37630.00750

25260226519722663042.47950.00870

35270224519822372142.40350.00770

454002265299229101-342.38560.00820

55400226532622774-142.30170.00790

65305226524522860-242.37230.00770

753402265208229132-342.41560.00690

85310232524122969342.08910.00780

95255222516922286042.33220.00620

105350232529523355-142.34710.00830

5328226.45247.9227.180.1-0.742.35030.0077

54002325326233132342.47950.0087

5255222516922255-342.08910.0062

56.83.254.53.223.11.80.10390.0007

5344225

5281226

5267223

2350228

5405226

5268226

5251228

5283229

5230221

5326232

5000.5226.4

5405232

2350221

932.73.1

1000

50010kHz)

50dBA

0(r/min)0(mA)

15390224530122589-1529922447.61

252602265197226630516522247.34

352702245198223721513822146.59

454002265299229101-3

55400226532622774-1526822746.59

65305226524522860-2519822447.35

753402265208229132-3

85310232524122969351982298/2

952552225169222860508422147.95

105350232529523355-1521023148.23

5328226.45247.9227.180.1-0.75195.0224.9

5400232532623313235299231

5255222516922255-35084221

56.83.254.53.223.11.868.53.80.00

0H500H1000H1500H2500H3000H35000H500H1000H1500H2500H3000H3500

0(r/min)0(r/min)0(r/min)0(r/min)0(r/min)0(r/min)0(r/min)0(mA)0(mA)0(mA)0(mA)0(mA)0(mA)0(mA)

153905301529952665311534652901224225224226225226230

252605197516551705181517351202226226222225223227228

352705198513852005190521951803224223221222223225228

4540052994226229

554005326526852805226227227226

653055245519852205233525252006226228224226226230228

7534052087226229

85310524151988232229229

952555169508451905120517751709222222221223222224225

10535052955210523510232233231232

/min

Sheet1

0000000100

000000000

0000000

0000000

00000

00000

00000

No.1

No.2

No.3

No.4

No.5

No.6

No.7

No.8

No.9

No.10

r/min)

Sheet2

0000000000

0000000000

00000000

0000000

00000

00000

00000

No.1

No.2

No.3

No.4

No.5

No.6

No.7

No.8

No.9

No.10

(mA)

mA)

Sheet3

00000

00000

00000

00000

00000

00000

00000

No.1

No.2

No.3

No.6

No.9

r/min)

00000

00000

00000

00000

00000

00000

00000

No.1

No.2

No.3

No.6

No.9

(mA)

mA)

Page *3. FDB life test / reliability 3-2 Fan operating current & Time(Hr)Less than 2% fan operating current change after 145 days

Remark: Test condition : temperature 80; Start/stop cycle mode 0 8000rpm , 60X60X12mm blower

Graph2

224226224226222

225226223228222

224222221224221

226225222226223

225223223226222

226227225230224

230228228228225

No.1

No.2

No.3

No.6

No.9

Time (Hr)

current(mA)

Fan operating current & Time(Hr)

Sheet1

(54B0H1000H

5000r/min 10kHzOA)10kHz)10kHz)10kHz)

1GB50dBA50dBA50dBA

0(r/min)0(mA)((mg)VH

153902243213.2377.9-42.78-46.0049.7542.383849.7547.61

252602264418.4577.5-42.07-44.0049.2042.488249.2047.34

352702249422.5778.1-38.87-44.9648.9442.411248.9446.59

4540022610014.1908.2-40.58-43.2348.8342.393849.2147.35

5540022626015.62597.9-41.9-45.5948.6042.309648.9147.95

653052262479.12487.9-41.41-44.5849.2142.3800

753402263348.73347.7-40.32-45.0148.8142.4225

853102323923.2387.9-39.83-44.4648.8942.0969

9525522225535.82267.7-41.22-45.1248.9142.3384

105350232464.1728.5-41.76-44.8548.8742.3554

5328226.416.57.93-41.074-44.7849.0042.3580

540023235.88.5-38.87-43.2349.7542.4882

52552224.17.5-42.78-4648.6042.0969

56.83.29.10.31.20.80.320.1040

0H500H

0(r/min)0(mA)

15390224530122589-142.37630.00750

25260226519722663042.47950.00870

35270224519822372142.40350.00770

454002265299229101-342.38560.00820

55400226532622774-142.30170.00790

65305226524522860-242.37230.00770

753402265208229132-342.41560.00690

85310232524122969342.08910.00780

95255222516922286042.33220.00620

105350232529523355-142.34710.00830

5328226.45247.9227.180.1-0.742.35030.0077

54002325326233132342.47950.0087

5255222516922255-342.08910.0062

56.83.254.53.223.11.80.10390.0007

5344225

5281226

5267223

2350228

5405226

5268226

5251228

5283229

5230221

5326232

5000.5226.4

5405232

2350221

932.73.1

1000

50010kHz)

50dBA

0(r/min)0(mA)

15390224530122589-1529922447.61

252602265197226630516522247.34

352702245198223721513822146.59

454002265299229101-3

55400226532622774-1526822746.59

65305226524522860-2519822447.35

753402265208229132-3

85310232524122969351982298/2

952552225169222860508422147.95

105350232529523355-1521023148.23

5328226.45247.9227.180.1-0.75195.0224.9

5400232532623313235299231

5255222516922255-35084221

56.83.254.53.223.11.868.53.80.00

0H500H1000H1500H2500H3000H35000H500H1000H1500H2500H3000H3500

0(r/min)0(r/min)0(r/min)0(r/min)0(r/min)0(r/min)0(r/min)0(mA)0(mA)0(mA)0(mA)0(mA)0(mA)0(mA)

153905301529952665311534652901224225224226225226230

252605197516551705181517351202226226222225223227228

352705198513852005190521951803224223221222223225228

4540052994226229

554005326526852805226227227226

653055245519852205233525252006226228224226226230228

7534052087226229

85310524151988232229229

952555169508451905120517751709222222221223222224225

10535052955210523510232233231232

/min

Sheet1

0000000100

000000000

0000000

0000000

00000

00000

00000

No.1

No.2

No.3

No.4

No.5

No.6

No.7

No.8

No.9

No.10

r/min)

Sheet2

0000000000

0000000000

00000000

0000000

00000

00000

00000

No.1

No.2

No.3

No.4

No.5

No.6

No.7

No.8

No.9

No.10

(mA)

mA)

Sheet3

00000

00000

00000

00000

00000

00000

00000

No.1

No.2

No.3

No.6

No.9

r/min)

00000

00000

00000

00000

00000

00000

00000

No.1

No.2

No.3

No.6

No.9

(mA)

mA)

Page *(Initial)4000 (After 4000Hrs)(Upper side)(Lower side)(Upper side)(Lower side)3. FDB life test / reliability 3-3 No friction lost after 4000Hours

abcd

0.2

abcd

0.2

Page * 3-4 Performance of Life Expectancy(L10/40 degree C) Product: AB0605HF-E03(SA01)

AD0712MF-D93,AD0812MF-A71GL Fluid Dynamic Bearing Test by ADDA lab Result - attachments

3. FDB life test / reliability

MTTF

ADDA

ADDA CORPORATION

THE TEST REPORT OF MTTF

AB0605HF-E03(SA01) TEST CONDITION DOCUNEMT NO.QAP-MTF372701B0

SAMPLES P/N

100PCS. START5/13/03_10:00

TESTED SAMPLES TEMP.: 70

1800HRS ON: SEC.

HRS/EA OFF: SEC.TEST FINISHED7/27/03_10:50

108000HRSOTHER:PERIOD

TOTAL TEST HRS

PRODUCT SPECIFICATION & FAILURE DEFINITIONTEST RESULTINCLUDING TIME OF FAILUREDATUMSTATISTICS.ETC.

1. (FAN NOT WORK.)

2.30% (SPEEDS OVER 30% ORIGIN.) TOTAL TEST HRS =108000HRS.

3.30% (CURRENTS OVER 30% ORIGIN.) (MTBF BY GEM TABLE) MTBF =78173HRS.

/ TEMP. / MTBF / L10

CHECK POINT AT THE HOURS OFTEMP.90% CONFIDENCE LEVEL MTTFL10

START: 0HR, 500HRS, 1000HRS AND FINISHED4062303565583

5029861931434

6015009115799

70781738229

1.Herewith, we could assume as right on the basis of above test result. Besides, if the actual test time exceed the required, it comes out that those

fans'L10 expectancy and MTTF are greater than the warrant. (MTTF: means Mean Time To Failures, it should be used in a non-reqairable system setting.

Now we show the MTTF in our life report, that's because we will not repair the failed fans during life experiment. MTBF: means Mean Time

Between Failures, it should be used in a repairable system setting. Basically, MTBF is equal to MTTF, they use same formula to work out a life data.)

APPROVED BY: CHECKED BY: PREPARED BY:

AB0605HF-E03(SA01)

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

L10

MTTF

ADDA

ADDA CORPORATION


AD0712MF-D93 TEST CONDITION DOCUNEMT NO.QAP-MTF421101B0

SAMPLES P/N

100PCS. START11/28/03_10:00


1800HRS ON: SEC.



TOTAL TEST HRS


1. (FAN NOT WORK.)






5029861931434

6015009115799

70781738229






AD0712MF-D93

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

L10

MTTF

ADDA

ADDA CORPORATION


AD0812MF-A70GL TEST CONDITION DOCUNEMT NO.QAP-MTF431001B0

SAMPLES P/N

100PCS. START12/26/03_10:00


1800HRS ON: SEC.



TOTAL TEST HRS


1. (FAN NOT WORK.)






5029861931434

6015009115799

70781738229






AD0812MF-A70GL

82081186401.1578947368

37382139349.5789473684

17917118860.1052631579

900559479.4736842105

469044937.2631578947

MTTF

L10

hrs

L10

Page * 3-4 Performance of Life Expectancy3. FDB life test / reliability

Chart1

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

MTTF & L10 - AB0605HF-E03(SA01)

MTTF

ADDA CORPORATION


AB0605HF-E03(SA01)QAP-MTF372701B0

SAMPLES P/N

100PCS.5/13/03_10:00

TESTED SAMPLES: 70

1800HRS: SEC.

HRS/EA: SEC.TEST7/27/03_10:50

108000HRS:PERIOD

TOTAL TEST HRS

PRODUCT SPECIFICATION & FAILURE DEFINITION

108000HRS.

78173HRS.

L10


29861931434

15009115799

781738229


AB0605HF-E03(SA01)

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

MTTF & L10 - AB0605HF-E03(SA01)


Chart1

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

MTTF & L10 - AD0712MF-D93

MTTF

ADDA CORPORATION


AD0712MF-D93QAP-MTF421101B0

SAMPLES P/N

100PCS.11/28/03_10:00

TESTED SAMPLES: 70

1800HRS: SEC.


108000HRS:PERIOD

TOTAL TEST HRS


108000HRS.

78173HRS.

L10


29861931434

15009115799

781738229


AD0712MF-D93

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

MTTF & L10 - AD0712MF-D93


Chart1

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

MTTF & L10 - AD0812MF-A70GL

MTTF

ADDA CORPORATION


AD0812MF-A70GLQAP-MTF431001B0

SAMPLES P/N

100PCS.12/26/03_10:00

TESTED SAMPLES: 70

1800HRS: SEC.


108000HRS:PERIOD

TOTAL TEST HRS


108000HRS.

78173HRS.

L10


29861931434

15009115799

781738229


AD0812MF-A70GL

623034.83019195765582.6137044165

298618.95248849131433.573946157

150091.2012507615799.0738158695

78172.50065143758228.6842790987

MTTF

L10

hrs

MTTF & L10 - AD0812MF-A70GL

Page * 3-5 Performance of Air flow/Static pressure/Noise level Product: AB0605HF-E03(SA01)

AD0712MF-D93,AD0812MF-A71GL Fluid Dynamic Bearing Test by ADDA lab Result - attachments

3. FDB life test / reliability

Page *4. Summary of FDB fan ADDA FDB fan can perform :

Long operating life [ >60,000 hours/40C,65%]

High reliability

Low power consumption

Good performance after 7 days of burn-in test(90 C)

ADDA FDB fan size (till Dec-01-2004)

- AB6012, AD6015, AD7015, AD8025, AD9225, AD12025

Page *4. Summary of FDB fan4-2 Current customers already used FDB fan - Japan SONY Notebook - Japan Fujitsu Notebook - Korea Sung-Ju CPU Cooler - Japan SONY PDP TV - Japan SONY RPTV

On-hand customers to approve - Korea Samsung PDP TV

Potential customers to contact/approach - USA Dell system fan - USA HP system fan

Page *Question & Answer

*

Fluid Dynamic Bearings

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