Model |
CF-V14H |
CF-V12H |
Marketing name |
VORTEX HDB 140 |
VORTEX HDB 120 |
Dimensions |
140 x 140 x 25 |
120 x 120 x 25 |
Speed |
1200rpm |
700rpm
(w/ adapter) |
1200 |
Air flow @ 12V (CFM, m3/h) |
70.5 / 119.8 |
55.5 / 94.3 |
60.4 / 102.6 |
Air pressure @ 12V (mm H2O) |
1.38 |
0.74 |
1.73 |
Noise |
19.2dB |
16.4dB |
17.7dB |
Bearing type |
HDB (Hydro-Dynamic Bearing) |
Connector |
3pin |
Cable length |
450 |
Cable sleeve |
Yes |
Accessories |
3 to 4pin adapter |
3 to 4pin adapter |
Fan speed adjustable cable |
Tool-less fixed pins |
Tool-less fixed pins |
Screws |
Screws |
|
Carton |
Color box with PVC window |
Lifetime L10 (hours / 25°C) |
300000 |
Optimum airflow, air pressure &
extremely silent performance
We defined HDB to Hydro Dynamic Bearing. An oil seal
design that has a higher reliability and advantage than conventional fan
motor design.
1. High revolution precision, low vibration noise
2. Fluid seal design provide extremely long life span
3. Surface tension effect, runs more smoothly with no friction, extremely
quiet
Fluid seal design is achieved through the use of oil surface tension and
hydrodynamic pumping forces provided by grooves. Bend area is centralized
oil and prevented oil leakage out of motor (oil leakage is main problem of
sleeve bearing, short life time) . Friction between shaft and HDB will be
down due to herringbone structure reaction (friction between the metal is
disadvantage of ball bearing, noise & waste heat problem). So HDB conquer
sleeve & ball bearing disadvantage to become more reliable & quiet
technology for Top-notch fan. Such design concept is successful and
applicative on HDD, and we can see a reliability application in it.
HDB, Ball, & Sleeve comparison
|
Sleeve |
Ball |
Hydro-Dynamic |
revolution precision |
mediocre |
good |
best |
vibration noise |
mediocre |
loud |
quiet |
life span (hrs) |
30,000 |
50,000 |
>150,000 |
waste heat |
high |
high |
low |
Cost |
low |
high |
high |
HDB Design Principles
Oil surface tension and hydrodynamic pumping forces provided
by grooves, no friction, extremely quiet