Transcript PowerPoint 簡報

New product introduction:
FDB ( Fluid Dynamic Bearing )
Presentation to customer
Page 1
Content
1.
2.
3.
4.
5.
Comparison of individual types of bearing
FDB introduction
FDB performance / reliability
Summary of FDB
Appendix
Page 2
1. Comparison of individual types of bearing
1-1 Bearing types ADDA provides
(1) Sleeve bearing;
(2) Dual ball bearing;
(3) 1 Ball,1 Sleeve bearing;
(4) FDB (new product in 2004Q2)
Page 3
1. Comparison of individual types of bearing
1-2 The comparison analysis table
Sleeve
Hypro
1B1S
2BB
FDB
Release Year
1989
1992
1989
1989
2002
Cost Range
Lowest
Lower
Middle
Higher
Higher
Noise
(Only Rotor /AD9225
/ 3100 rpm / 0.3m)
Higher
26dB(A)
Middle
25dB(A)
Highest
27dB(A)
Lower
24.4dB(A)
Lowest
& Stable
21.3dB(A)
31,000
40,000
50,000
50,000
60,000
Operation
Temperature
Under 70℃
Under 70℃
Under
70℃
Under 90℃
Under 90℃
Recommendation
Easy to Oil
Leakage
Easy to Oil leakage
It should be protected by
protective structure.
Noisy
Apply to
Power Supply,
Case fan
N/B, Case Fan, VGA
cooler
N/B, Hub,
CPU cooler,
Projector
Life Expectancy
(Hours/L10/ 40℃)
Page 4
Replace 2BB
N/B, Projector,
PDP-TV, VGA
cooler, Server
PDP-TV, N/B,
Projector
1. Comparison of individual types of bearing
1-3 Before Burn-in Test [Type:AD0612- FDB/2BB]
FDB fan performs the better performance by air flow , pressure,
noise , power consumption before 7 days of burn-in(90 degreeC]
Pressure
Air flow
Before Test AD0612-Q
6
AD0612-2BB
AD0612-FDB
5
Current
Before Test AD0612-Noise
Before Test AD0612-P
AD0612-2BB
AD0612-FDB
8
Noise
8
AD0612-2BB
AD0612-FDB
Before Test AD0612-I
15
AD0612-2BB
AD0612-FDB
6
6
4
4
3
4
2
2
5
2
0
.6
12
10
.7
12
.8
12
.9
12
13
.1
13
.2
13
-2
1
0
0
5
5
5
5
5
5
5
.7
.2
.7
.2
.7
.2
.7
25
26
26
27
27
28
28
40
50
60
70
80
90
00
09
09
09
09
09
09
10
-1
0.
0.
0.
0.
0.
0.
0.
-2
0
-4
-2
-6
-3
-4
-4
-6
-5
Better
Page 5
00
00
00
00
00
00
00
48 052 056 060 064 068 072
.0 0
.0
.0
.0
.0
.0
.0
-5
-8
-10
-10
1. Comparison of individual types of bearing
1-3 After Burn-in Test [Type:AD0612- FDB/2BB]
FDB fan performs the better performance by air flow , pressure,
noise , power consumption after 7 days of burn-in(90 degreeC]
Pressure
Air flow
After Test AD0612-Q
AD06012-2BB
After Test 0612-P
After Test AD0612-Noise
AD06012-2BB
4
AD0612-FDB
After Test AD0612-I
AD06012-2BB
AD0612-FDB
6
AD0612-FDB
3
8
Current
15
2
2
1
10
0
-2
29
.5
28
28
.5
27
27
.5
26
0
00
26
0
99
0.1
0
98
0.0
0
97
0.0
0
96
0.0
0
95
0.0
-1
0.0
0
94
0
0.0
2
AD0612-FDB
4
6
4
AD06012-2BB
20
5
-2
-6
-6
-8
-7
Better
Page 6
-10
-10
0.06600
0.06400
-5
-8
0.06200
-5
0.06000
-6
0.05800
0
0.05600
-4
-4
-4
0.05400
-3
0.05200
-2
0.05000
12
.4
12
.5
12
.6
12
.7
12
.8
12
.9
13
13
.1
13
.2
13
.3
13
.4
0
0.04800
10
Noise
2. FDB introduction
2-1 Design concept
• FDB : Fluid Dynamic Bearing
Bearing can endure
high temperature
No mechanical contact during revolution
No oil reduction
No oil leakage
structure
Page 7
No oil quality change
2. FDB introduction
2-2 FDB structure
Fluid dynamic pressure
support shaft floating
Groove
<= 5μm
Oil flow
Shaft Rotation
Our FDB performs longer life by no metal
contact with shaft to bearing
Page 8
2. FDB introduction
2-3 Types of FDB structure
Shaft (I type)
FDB (with groove)
Sealing (Adhesive)
Cap
Metal housing
(A)Open type
(B)Closed type
Thrust retainer
Our FDB is (B) Closed type.
On case of using material of FDB by powder(with hole), it is not
Occur of oil flew out. Then it can keep long term life.
Page 9
2. FDB introduction
2-4 The comparison analysis table
Life
×
SLEEVE Bearing
Contact
Contact Material
Slide
Oil to Metal
Rolling
Grease
Oil with high pressure to
Shaft float up
Oil
31,000 Hours
@ 40 oC / 65%
○
BALL Bearing
50,000 Hours
@ 40 oC / 65%
○
FDB
60,000 Hours
@ 40 oC / 65%
description
3700RPM,AB0612
Our FDB can support the long term life thru no metal contact
with shaft to bearing.
Page 10
2. FDB introduction
2-5 Motor design of conventional bearing and FDB
(A) Conventional:
sleeve
ball
(B) New Technology : FDB
shaft
Page 11
2. FDB introduction
2-6 FDB structure with fan other components
Impeller
Magnet
Bearing
holder
Stator
Oil
section
Remark: Oil seal structure (repellent material) is not shown
Page 12
FDB Unit
2. FDB introduction
2-7 FDB Features
Major advantages over conventional bearings
Design:
•
Dynamic pressure built-up centering the shaft
- lubricating oil pressure gained by the shaft rotation

No metal surface contact
- lubricating oil between shaft and bearing
- no metal-to-metal contact
- lower noise
- longer operating life
Page 13
2. FDB introduction
2-7 FDB Features
Major advantages over conventional bearings
Design:

Vacuum impregnating oil
- no air bubbles
- no oil leakage due to air pressure variation
- higher level non-operational shock resistance
Page 14
2. FDB introduction
2-7 FDB Features
Major advantages over conventional bearings
Design:

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 test
Page 15
2. FDB introduction
2-7 FDB Features
Major advantages over conventional bearings
Design:

FDB module
- More reliable manufacturing
- Smart enabling technology
- Easily adopted to various fan sizes
- Less components (no washer)
Page 16
3. FDB life test / reliability
3-1 Fan motor speed vs Time(Hr)
Less than 3% fan speed change after 145 days
Fan motor speed vs Time(Hr)
6000
RPM
5800
5600
5400
5200
5000
0H
500H
1000H
1500H
2500H
3000H
Time (Hr)
Remark: Test condition : temperature 80℃; Start/stop cycle mode 0 8000rpm , 60X60X12mm blower
Page 17
3500Ｈ
3. FDB life test / reliability
3-2 Fan operating current & Time(Hr)
Less than 2% fan operating current change after 145 days
Fan operating current & Time(Hr)
current(mA)
300
250
200
0H
500H
1000H
1500H
2500H
3000H
Time (Hr)
Remark: Test condition : temperature 80℃; Start/stop cycle mode 0 8000rpm , 60X60X12mm blower
Page 18
3500Ｈ
3. FDB life test / reliability
3-3 No friction lost after 4000Hours
初期 (Initial)
(Upper side)
内径面観察位置
a部
(Lower side)
b部
上側軸受部
4000Ｈ後 (After 4000Hrs)
内径面観察位置
Page 19
c部
d部
下側軸受部
0.2 ㎜
内径面観察結果
図 内径面外観写真
a 部　b 部　c 部　d 部
上側軸受部　下側軸受部
(Upper side)
(Lower side)
0.2 ㎜
内径面観察結果
図　内径面外観写真
3. FDB life test / reliability
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
Page 20
3. FDB life test / reliability
3-4 Performance of Life Expectancy
MTTF & L10 - AB0605HF-E03(SA01)
700000
623035
600000
500000
400000
298619
300000
150091
200000
78173
100000
hrs
0
15799
65583
40℃
31434
50℃
MTTF
Page 21
8229
60℃
70℃
L10
3. FDB life test / reliability
3-4 Performance of Life Expectancy
MTTF & L10 - AD0712MF-D93
700000
623035
600000
500000
400000
298619
300000
150091
200000
78173
100000
hrs
0
15799
65583
40℃
31434
50℃
MTTF
Page 22
8229
60℃
70℃
L10
3. FDB life test / reliability
3-4 Performance of Life Expectancy
MTTF & L10 - AD0812MF-A70GL
700000
623035
600000
500000
400000
298619
300000
150091
200000
78173
100000
hrs
0
15799
65583
40℃
31434
50℃
MTTF
Page 23
8229
60℃
70℃
L10
3. FDB life test / reliability
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
Page 24
4. Summary of FDB fan
ADDA FDB fan can perform :
- Long operating life [ >60,000 hours/40°C,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 25
4. Summary of FDB fan
4-2 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 26
Question & Answer
Page 27