Fluid Dynamic Bearings流体动力高速轴承
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Page 9 www.jarothermal.com
2. FDB introduction
2-4 The comparison analysis table
Life
SLEEVE Bearing × 31,000 Hours @ 40 o C / 65% ○ 50,000 Hours @ 40 o C / 65% ○ 60,000 Hours @ 40 o C / 65%
New product introduction FDB ( Fluid Dynamic Bearing ) Presentation to customer
Page 1 www.jarothermal.com
Content 1. Comparison of individual types of bearing 2. FDB introduction 3. FDB performance / reliability 4. Summary of FDB 5. Appendix
Contact
Slide
Contact Material
Oil to Metal
BALL Bearing
Rolling
Grease
FDB
Oil with high pressure to Shaft float up
Oil
description
3700RPM,AB0612
Our FDB can support the long term life thru no metal contact with shaft to bearing.
-5
0 .0
www.jarothermal.com
1. Comparison of individual types of bearing
1-3 After Burn-in Test
[Type 0612- FDB/2BB]
FDB fan performs the better performance by air flow , pressure, noise , power consumption after 7 days of burn-in(90 degreeC]
Air flow
After Test AD0612-Q
10 8 6
Pressure
After Test 0612-P 4 3 2 1 2
Noise
After Test AD0612-Noise 6 AD06012-2BB AD0612-FDB 20
Current
After Test AD0612-I
-2 -4
-5
-6 -8
-6 -7
-10
-10
Better Page 6
www.jarothermal.com来自百度文库
2. FDB introduction
2-1 Design concept FDB : Fluid Dynamic Bearing
Bearing can endure Bearing can endure high temperature high temperature
AD0612-2BB AD0612-FDB
AD0612-2BB AD0612-FDB
6 4 4 3 2 2 1 0 2 5 0
.7 5 .2 5
.7 5
.2 5 .7 5 27
25
26
26
27
28
0
-2 -4 -6
28
.2 5 .7 5
0
0
0
0
0
0 .0
0 .0
0 .0
0 .0
0 .0
0 .0
0 .1
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 2 www.jarothermal.com
1. Comparison of individual types of bearing
1-1 Bearing types JARO provides (1) Sleeve bearing; (2) Dual ball bearing; (3) 1 Ball,1 Sleeve bearing; (4) FDB (new product in 2004Q2)
AD06012-2BB AD0612-FDB
AD06012-2BB AD0612-FDB
AD06012-2BB AD0612-FDB
4 15
4 2 0
0
10 0
0
0
0
0
0
0
0
26
27
26
27
0 .0
0 .0
0 .0
0 .0
0 .0
0 .0
0 .1
28
-1 -2 -3 -4
28
95
97
98
00
94
96
Under 90℃
Under 90℃
Replace 2BB
Apply to
Page 4
Power Supply, Case fan
N/B, Hub, CPU cooler, Projector
N/B, Projector, PDP-TV, VGA cooler, Server
PDP-TV, N/B, Projector
Page 10 www.jarothermal.com
2. FDB introduction
2-5 Motor design of conventional bearing and FDB
(A) Conventional:
sleeve ball
(B) New Technology : FDB
shaft
Page 11 www.jarothermal.com
2. FDB introduction
2-6 FDB structure with fan other components
Impeller Magnet
Stator
Bearing holder
Page 12
Oil section
FDB Unit
Page 3 www.jarothermal.com
1. Comparison of individual types of bearing
1-2 The comparison analysis table
Sleeve
Release Year Cost Range Noise (Only Rotor /AD9225 / 3100 rpm / 0.3m) Life Expectancy (Hours/L10/ 40℃) Operation Temperature Recommendation
99
29
.5
.5
.5
-2
5
12 .4 12 .5 12 .6 12 .7 12 .8 12 .9 13 13 .1 13 .2 13 .3 13 .4
-4 0 -6 -5 -8 0 .0 4 8 0 0 0 .0 5 0 0 0 0 .0 5 2 0 0 0 .0 5 4 0 0 0 .0 5 6 0 0 0 .0 5 8 0 0 0 .0 6 0 0 0 0 .0 6 2 0 0 0 .0 6 4 0 0 0 .0 6 6 0 0
www.jarothermal.com
Remark: Oil seal structure (repellent material) is not shown
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 13 Page operating life
www.jarothermal.com
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
No mechanical contact during revolution No mechanical contact during revolution
No oil reduction No oil reduction
No oil quality change No oil quality change
31,000
40,000
50,000 Under 70℃
Noisy
50,000
60,000
Under 70℃
Easy to Oil Leakage
Under 70℃
Easy to Oil leakage It should be protected by protective structure. N/B, Case Fan, VGA cooler
12
12
12
12
13
13
-1 -2 -3
0
98
99
96
13
.8
.9
.6
.7
.1
.2
97
00
94
95
0
0
-2
-4 -4 -6 -5 -8 -10 -10
Page 5
Better
48 0 0 .0 0 52 0 0 .0 0 56 0 0 .0 0 60 00 0 .0 64 0 0 .0 0 68 00 0 .0 72 00
Air flow
Before Test AD0612-Q
8
Pressure
Before Test AD0612-P
6 5
Noise
Before Test AD0612-Noise
8 6 4 10
Current
Before Test AD0612-I
15
AD0612-2BB AD0612-FDB
AD0612-2BB AD0612-FDB
Oil flow
Shaft Rotation
Our FDB performs longer life by no metal contact with shaft to bearing
Page 8 www.jarothermal.com
2. FDB introduction
2-3 Types of FDB structure
Page 14 www.jarothermal.com
2. FDB introduction
No oil leakage No oil leakage structure structure Page 7 www.jarothermal.com
2. FDB introduction
2-2 FDB structure
Groove <= 5μm
Fluid dynamic pressure support shaft floating
Hypro 1992
Lower
1B1S 1989
Middle
2BB 1989
Higher
FDB 2002
Higher
1989
Lowest
Higher 26dB(A)
Middle 25dB(A)
Highest 27dB(A)
Lower 24.4dB(A)
Lowest & Stable 21.3dB(A)
www.jarothermal.com
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]
2. FDB introduction
2-4 The comparison analysis table
Life
SLEEVE Bearing × 31,000 Hours @ 40 o C / 65% ○ 50,000 Hours @ 40 o C / 65% ○ 60,000 Hours @ 40 o C / 65%
New product introduction FDB ( Fluid Dynamic Bearing ) Presentation to customer
Page 1 www.jarothermal.com
Content 1. Comparison of individual types of bearing 2. FDB introduction 3. FDB performance / reliability 4. Summary of FDB 5. Appendix
Contact
Slide
Contact Material
Oil to Metal
BALL Bearing
Rolling
Grease
FDB
Oil with high pressure to Shaft float up
Oil
description
3700RPM,AB0612
Our FDB can support the long term life thru no metal contact with shaft to bearing.
-5
0 .0
www.jarothermal.com
1. Comparison of individual types of bearing
1-3 After Burn-in Test
[Type 0612- FDB/2BB]
FDB fan performs the better performance by air flow , pressure, noise , power consumption after 7 days of burn-in(90 degreeC]
Air flow
After Test AD0612-Q
10 8 6
Pressure
After Test 0612-P 4 3 2 1 2
Noise
After Test AD0612-Noise 6 AD06012-2BB AD0612-FDB 20
Current
After Test AD0612-I
-2 -4
-5
-6 -8
-6 -7
-10
-10
Better Page 6
www.jarothermal.com来自百度文库
2. FDB introduction
2-1 Design concept FDB : Fluid Dynamic Bearing
Bearing can endure Bearing can endure high temperature high temperature
AD0612-2BB AD0612-FDB
AD0612-2BB AD0612-FDB
6 4 4 3 2 2 1 0 2 5 0
.7 5 .2 5
.7 5
.2 5 .7 5 27
25
26
26
27
28
0
-2 -4 -6
28
.2 5 .7 5
0
0
0
0
0
0 .0
0 .0
0 .0
0 .0
0 .0
0 .0
0 .1
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 2 www.jarothermal.com
1. Comparison of individual types of bearing
1-1 Bearing types JARO provides (1) Sleeve bearing; (2) Dual ball bearing; (3) 1 Ball,1 Sleeve bearing; (4) FDB (new product in 2004Q2)
AD06012-2BB AD0612-FDB
AD06012-2BB AD0612-FDB
AD06012-2BB AD0612-FDB
4 15
4 2 0
0
10 0
0
0
0
0
0
0
0
26
27
26
27
0 .0
0 .0
0 .0
0 .0
0 .0
0 .0
0 .1
28
-1 -2 -3 -4
28
95
97
98
00
94
96
Under 90℃
Under 90℃
Replace 2BB
Apply to
Page 4
Power Supply, Case fan
N/B, Hub, CPU cooler, Projector
N/B, Projector, PDP-TV, VGA cooler, Server
PDP-TV, N/B, Projector
Page 10 www.jarothermal.com
2. FDB introduction
2-5 Motor design of conventional bearing and FDB
(A) Conventional:
sleeve ball
(B) New Technology : FDB
shaft
Page 11 www.jarothermal.com
2. FDB introduction
2-6 FDB structure with fan other components
Impeller Magnet
Stator
Bearing holder
Page 12
Oil section
FDB Unit
Page 3 www.jarothermal.com
1. Comparison of individual types of bearing
1-2 The comparison analysis table
Sleeve
Release Year Cost Range Noise (Only Rotor /AD9225 / 3100 rpm / 0.3m) Life Expectancy (Hours/L10/ 40℃) Operation Temperature Recommendation
99
29
.5
.5
.5
-2
5
12 .4 12 .5 12 .6 12 .7 12 .8 12 .9 13 13 .1 13 .2 13 .3 13 .4
-4 0 -6 -5 -8 0 .0 4 8 0 0 0 .0 5 0 0 0 0 .0 5 2 0 0 0 .0 5 4 0 0 0 .0 5 6 0 0 0 .0 5 8 0 0 0 .0 6 0 0 0 0 .0 6 2 0 0 0 .0 6 4 0 0 0 .0 6 6 0 0
www.jarothermal.com
Remark: Oil seal structure (repellent material) is not shown
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 13 Page operating life
www.jarothermal.com
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
No mechanical contact during revolution No mechanical contact during revolution
No oil reduction No oil reduction
No oil quality change No oil quality change
31,000
40,000
50,000 Under 70℃
Noisy
50,000
60,000
Under 70℃
Easy to Oil Leakage
Under 70℃
Easy to Oil leakage It should be protected by protective structure. N/B, Case Fan, VGA cooler
12
12
12
12
13
13
-1 -2 -3
0
98
99
96
13
.8
.9
.6
.7
.1
.2
97
00
94
95
0
0
-2
-4 -4 -6 -5 -8 -10 -10
Page 5
Better
48 0 0 .0 0 52 0 0 .0 0 56 0 0 .0 0 60 00 0 .0 64 0 0 .0 0 68 00 0 .0 72 00
Air flow
Before Test AD0612-Q
8
Pressure
Before Test AD0612-P
6 5
Noise
Before Test AD0612-Noise
8 6 4 10
Current
Before Test AD0612-I
15
AD0612-2BB AD0612-FDB
AD0612-2BB AD0612-FDB
Oil flow
Shaft Rotation
Our FDB performs longer life by no metal contact with shaft to bearing
Page 8 www.jarothermal.com
2. FDB introduction
2-3 Types of FDB structure
Page 14 www.jarothermal.com
2. FDB introduction
No oil leakage No oil leakage structure structure Page 7 www.jarothermal.com
2. FDB introduction
2-2 FDB structure
Groove <= 5μm
Fluid dynamic pressure support shaft floating
Hypro 1992
Lower
1B1S 1989
Middle
2BB 1989
Higher
FDB 2002
Higher
1989
Lowest
Higher 26dB(A)
Middle 25dB(A)
Highest 27dB(A)
Lower 24.4dB(A)
Lowest & Stable 21.3dB(A)
www.jarothermal.com
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]