FDB bearing technology analysis: oil seal is not durable double roll too noisy

For the pursuit of the ultimate silent users, the double ball fan because of its unique bearing sound difficult to use for a long time was abandoned, and oil seal bearing fan because of shorter service life and criticism, in this environment FDB (dynamic Hydraulic bearings) bearing appears, in fact, this is a kind of oil lubricated bearings, the use of oil film in exchange for better noise performance and seismic performance. The author got ChipHell senior players monster wrote an article on the FDB bearing the essay, hoping to help everyone understand the FDB bearings.

Dynamic liquid bearings are usually used in the precision machinery industry, it uses a mucosal oil bearing, oil film instead of ball. This can avoid the direct friction of the metal surface, the noise and temperature is reduced to the lowest; while the oil film can effectively absorb the vibration, so that the seismic capacity is improved; more to reduce wear and improve life.

Test data 1: 8025 fan under the same conditions to run the corresponding time the temperature performance.

 

Test data two: 6.7MB in the background noise background, the fan placed 1.0 meters away from the microphone, several fans of the noise of three kinds of bearings contrast.

 

Test data three: with the specifications of double ball bearings and FDB bearing fan at different heights after the noise performance comparison.

 

Test data three: with the specifications of double ball bearings and FDB bearing fan in the long-term operation after the noise performance comparison.

FDB bearing fan structure

FDB bearing DC fan works

 

Hunan Jintai Hardware and Machinery Co.,Ltd. is a professional manufacturer on various kind of bearings over 15 years China factory.
We are making all kinds of slide bearings including DU PTFE composit bushing, DX POM composite bushing,bimetal bushing,wrapped bronze bushing, cast sliding bushings and wear plate bearing pad, sintered bronze bushing and sintering parts, ball transfer bearings, etc.
The shapes of bearings can be in sleeve, flanged, spherical, plate, washer, pad, ring, square etc.
Base materials in carbon steel, harden steel, iron, stainless steel, bronze, brass, copper, bronze-steel alloy.Lubricant materials in PTFE, teflon, POM, nylon, plastic, oil, graphite, grease, MoS2, etc.
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