Cylindrical roller bearing sl185024 Baodi District Koyo bearing cylindrical roller authorized agent to sell original stock

thickness	80
Accuracy grade	sp
inner diameter	120
Outer diameter	180
purpose	rolling mill
Weight	6 77

Mixing a little impurities (such as water, etc
) will not affect its due performance (4) It plays a sealing role and can prevent water or dirt from entering the bearing
(5) It is not easy to transmit vibration or can reduce noise
(6) Centralized lubrication can be implemented
3
Special requirements for lubricants under special working conditions, the following special requirements must be put forward for lubricants: (1) long life requirements require that the service life of lubricants is particularly long
(2) The requirement of low friction torque requires that the friction resistance of lubricant is very low
(3) The requirement of high temperature resistance requires that it can withstand high temperature above 250 ℃
(4) The requirement of low temperature resistance requires that it can withstand low temperature below 63 ℃
(5) The requirement of high vacuum resistance requires that under the condition of high vacuum, it will not volatilize, dissipate or deteriorate, especially under the condition of high vacuum in the state of weightlessness
(6) Requirements for harmlessness   It is mainly distinguished according to temperature and working conditions: grease can be classified according to their allowable working temperature
The consistency and lubricating ability of grease are affected by working temperature
Sliding bearings operating at a certain temperature must choose grease with correct consistency and good lubricating effect at the same temperature
Oils and fats are produced in different working temperature ranges, which can be roughly divided into low-temperature, medium temperature and high-temperature oils and fats
At the same time, there is a kind of grease called extrusion resistance or extrusion resistance, and molybdenum disulfide is added
At the same time, additives are added to strengthen the strength of the lubricating oil film
If the grease is selected incorrectly, all measures to prevent bearing are also in vain
It is very important to choose a grease whose base oil viscosity can provide sufficient lubrication effect at the working temperature
The viscosity is mainly affected by the temperature
It decreases with the increase of temperature, and increases when the temperature decreases
Therefore, it is necessary to know the viscosity of base oil at operating temperature
Machine manufacturers usually specify the use of a certain grease, but most standard greases have a wide range of applications