EVERCOOL's Research and Development team has created the Air sealed shaft fan. It has ready made an impact to the market. This kind of shaft structure is very cost efficient (low material cost and a longer life span than the traditional shaft.) The features are as follow:
Design Principle:
  The sealed bearing is composed of five components including the oil cap, copper bearing, plastic washer, mylar piece, and o-ring; wherein the components can effectively prevent the oil from leaking through the top part of the bearing. At the bottom of the fan, the sealed single-piece mechanism can completely seal the oil within the fan structure without leakage. The copper bearing used for the fan unit can reduce the amount of oil spreading, effectively retaining the proper amount of oil in the fan for a long period of time to increase the lifespan and reduce the noise. However, EL bearings are achieved by injecting a sufficient amount of oil into the copper bearing<and fulfill oil space>, and then sealing off the top and bottom parts of the bearing to prevent the oil from leaking, thereby improving the lifespan of the fan unit. As the bearing is sealed, dust can be effectively stopped at the top or bottom of the bearing to prevent malfunction of the fan unit due to dust accumulation.
Design Concept:
  EL: Completely sealed bearing structure No mechanical contact during usable lifespan of fan No oil loss Oil quality not degraded
Comparison between EL bearing and sleeve bearing:
 
Sleeve bearing has a simple structure with only an o-ring at the tip of the fan to prevent oil from spreading.  
EL bearing has the o-ring at the tip of the fan and the single-piece fan base in addition to the seal mechanism (rubber washer, o-ring, mylar piece, copper cap) to effectively reduce the risk of oil leak and improve the fan lifespan.  
   
 

ELA
Feature:

1. Long lifespan {>50,000 hrs@ 40J 90%}
2. High reliability, effective at preventing dust from entering
3.No oil pollution
4.Low friction
5. High temperature resistance ( continuous 7-day testing at 90J )
6. High efficiency and low cost


CA
Feature:
1. Middle range pricing
2. Average life span.
3. Easy accesses for dusts, dusts will combine with the oil.
4. Easy accesses for oil to get into the bearing



BA
Feature:
1. Expensive
2. Long life span
3. Easy access for dusts, dusts will combine with the oil.



SA
Feature:

1. Low price.
2. Easy access for dusts, dusts will combine with the oil.
3. Short life span.
4. Friction between parts easy for parts to wear off.

Remark:
dusts oil ring copper cap lubrication
C-clip Ball spring copper pipe
rubber pad plastic pad Single-piece sealed structure plastic clip
Copper bearing      
 
30x30x10
40x40x10
40x40x20
45x45x10
 
 
50x50x10
50x50x15
50x50x20
60x60x15
 
 
60x60x20
60x60x25
70x70x15
70x70x25
 
 
80x80x15
80x80x20
80x80x25
80x80x35
 
 
92x92x25
92x92x32
120x120x25
120x120x38
         
 
Copyright EVERCOOL Thermal Co., Ltd. 2008. All Rights Reserved.