FANADE Industry (HongKong) Ltd,a professional supplier of Supplier For Wholesale Fag Bearings http://www.fagbearings-hk.com/ ,has formed a integrated company of sales and service on SKF,FAG,NSK,TIMKEN,NTN,NACHI,IKO,INA,KOYO,FYH and so on from Swenden,Germany,France,Japan,India,USA,Canada,Brazil and other country in European/Asia and North America/South America.Ranging from Ball Bearing Series:Deep Groove Ball,Thrust Ball(Single Row Double-Directino/Doubel Row Single-Direction),Radial Ball,Self-aligning Ball,Filling Slot Ball,Counterbored Ball,Three/Four Point Contact Ball.Roller Bearing Series:Spherical Roller,Radial Roller,Cylindrical Roller,Tapered Roller,Needle Roller,Drawn Cup Needle Roller,Convex Roller,Concave Roller,Crossed Roller,Thrust Roller,Cylindrical Roller Thrust,Tapered Roller Thrust,Needle Roller Thrust,Spherical Thrust Roller.FANADE Bearing Seals Type include:RS,2RS,Z,2Z,2RZ,DDU,LLU,VV.Bearing Row:Single-Row,Double-Row,Four-Row after years of development with their strong technologies,advanced equipment,a professional technical team,quality production,reasonable prices.FANADE products have been favored by the most customers and have gained a broad recognition.FANADE Bearing website provide Structure、Dimensions、Net Weight and all Parameter and Details of all kind of bearings.Here we'd like to talk about Low noise seal imports bearing grease.
1. The general low noise motor imported bearing grease
In the imported bearing industry, this kind of grease are the biggest, accounts for about 70% of the total in fat mass. Because this kind of grease to choose soft, easy to filter the fibres lithium soap thickeners, the use of mineral oil as base oil, it is easy to meet the requirements of cheap imported bearings reduce vibration value. Another advantage is good pumping, whether mechanical fatliquoring, or manual besmear fat, is easy. Moreover, the lower the price of the grease, can greatly reduce the cost of imported bearing. However, because of using the mineral base oil, make this kind of grease in the derusting and rust resistance of some physical and chemical indicators on a big discount. Such as imported bearing life can reach 200 hours, when starting and running torque - 20 ℃ test is difficult. The grease to use temperature is commonly - 20 ~ 120 ℃, when used in high temperature above 150 ℃, there will be a base oil evaporation too fast, erosion phenomenon, such as import bearings service life shortens greatly.
2. Low temperature high-speed imported bearing grease
At present, the use of increasingly fine precision imported bearing equipment, prompting imported bearing grease used must have the following properties:
(1) have the same operation and import bearing life, try to prolong the maintenance cycle, shorten downtime, improve labor productivity.
(2) under the high speed of dn > 5 x 105 to ensure that the motor temperature rise is low, not dump oil, thus reducing power consumption and protect the motor.
(3) the impurity content control under certain criteria, the earth can reduce noise pollution to the environment.
(4) in cryogenic conditions ensure import bearings starting and operation flexibility, ensure that the output power is minimal.
Foreign company selects high purity chemical synthetic grease oil and special additives, on high cleanliness of the environment and equipment development and production of the low temperature high-speed imported bearing grease. , such the shortcomings of the grease is in more than 150 ℃ when used with a sharp drop in its life, the rise of temperature load and impact resistance is weak, should avoid to use on large imported bearing, in case the result of the boundary lubrication sintering.
3. The high temperature long life and low noise imported bearing grease
Under the environment of high temperature and high speed using grease shall have the following features:
(1) no loss at high temperature, that is, at about 180 ℃ temperature keeping consistency, not soften.
(2) less oil leakage. When in the imported bearing grease under high frequency repeated shear function, and a lot of centrifugal force lubrication can back into the race is not throw in a timely manner.
(3) this kind of grease to the service life of high temperature to a certain extent, has good oxidation resistance at high temperature, so as to prolong the service life of imported bearings and related equipment.
(4) has a certain effect of mute, due to the high temperature grease fiber general hardness is larger, so the import bearing noise test of mute performance than a lithium base grease.
High-temperature long-life grease is generally divided into two kinds, one kind is compound lithium base grease, the high temperature performance is good, but due to its low molecular acid viscosifier crystallization, allow it to increase the hardness of fiber is bigger, show the vibration performance is poor in the imported bearing. But by controlling the degree of polymerization, is a kind of uniform molecular weight distribution of products, such products will be dispersed in the base oil with special method, then made another noise performance and high temperature performance is also excellent lubricating grease.
This grease average drop point is greater than 250 ℃, using temperature is 200 ℃ or so, the thickening agent does not contain metal ions in the crystal, fiber hardness is small, the noise performance is very good. At the same time, due to its basic chemical composition of thermal coupling effect between reducing the high temperature grease. This kind of high temperature and high speed low noise does not contain any grease can cause catalysis and oxidation of metal ions, and contain rich nitrogen oxygen thickener is also a kind of antioxidant, so the import bearing life and sound quality is good.