A cooling fan can be quiet?
the best and most effective way is to change the better bearing, at present most of the manufacturers of 3007 fan fan is made of oil type copper bearing, the beginning of rough bearing under the action of lubricating oil, sounds good, after a long time, the oil amount is reduced, the noise came out, if with double ball bearings, improve good voice, is so thin, so small ball only Japan ISC brand can do
in addition, in view of the 3007 type oil cooling fan noise problem, JingYang made the following several aspects to improve, first, the independent drive designed model 3007 bearing, fully cooperate with the mould size of bearing, such precision is better than male die to general a lot of fan bearing a lot. Second, open mould core shaft,. Third, do a smaller blades balance coefficient, make the balance better, more balanced cooling fan operation. Fourth, the use of hydraulic structure, make the lubricating oil less volatile, the performance of the extended mute.
from the above three aspects, which can effectively extend the cooling fan of the mute effect to more than 1 year, but the cost would be higher than ordinary about 0. 8 yuan, to mute the customer can consider this mould.