The classification of the grease and choice - bearing knowledge

Grease can be classified according to the their tolerance to temperature, grease lubrication ability and the viscosity is affected by the temperature of the work is larger, under a certain temperature, oil can make bearing in good running condition. Oil can be divided into low temperature lt classification theory, the mt under medium temperature, high temperature of ht, at the same time, a kind of oil called ep ( Extrusion proof. ) Cargo em ( Resistance to extrusion and adding mos2) , with additives to enhance the strength of the lubricating oil film. Choose oil is very important, if the error the rotation of the oil, then all in vain bearing damage prevention measures, choice has always been fat, in its working temperature and suitable environment to achieve the best anti fatigue and the effect of lubrication, usually bearing manufacturer will specify the use of certain types of oils and fats, but all of us to axle usually do not have similar information, and to make the bearing running play in the best state. Then choose the attitude of the grease must be very serious, I recommend you can consider bike grease should be the medium viscosity, high water-proof, high extreme pressure, medium temperature, high seismic oil, now we choose there are many types of used oil, 202 Thailand ( Also known as starr # 2) Is a kind of cheap and meet the requirements of the most oil, prices in general is 25 yuan a kg, the only problem is that the viscosity is too big, in the condition of axial clearance adjusting is admirable, hand turn also still feel a slight resistance, because the viscosity is too high, this kind of oil may even turn sticky dynamic rubber oil seal, for xi ma flower drum and road car flower drum is relatively appropriate, especially high axial such extremely is especially suitable for low speed bearings, SKF LGEP - 2 lithium base grease not only have various advantages of Thailand, 202, and under the viscosity is less than 202 in Thailand, which makes the shaft rotate more smoothly, and for use in 3 axis rotation frequency low car first bowl group and the frequency of the idler pulley are appropriate, in the choice of the grease is we in the long-term practice and through the case of many detours a rare experience to choose, you can also be found in SKF resale shop near home this grease, the only drawback is that the price is more expensive, but for the protection of the bearing is worth the investment.