Mill imported SKF bearing lubrication method - bearing knowledge

A import bearing lubrication, lubrication methods roll in principle with the other rolling imported bearing lubrication, just roll imported bearing working condition is bad, its performance could get effective play depends largely on imported bearing lubrication condition. Roll imported bearing lubrication methods mainly include grease lubrication and oil lubrication. Grease lubrication grease and seal, seal structure and lubrication equipment simple, add grease is convenient, so as long as the work conditions allow, grease roll import bearings are generally used. Oil lubrication cooling effect is strong, and can be taken from imported bearing inner dirt and moisture. Roll imported bearing lubrication oil lubrication methods have pressure oil lubrication, oil lubrication, oil mist lubrication and oil lubrication. Pressure oil lubrication is the most effective under the conventional speed roll imported bearing lubrication. Oil lubrication is the lubricating oil at a certain pressure through in imported bearing on one side of the nozzle spray into the bearing lubrication for internal, generally applied in high speed roll bearing imports, or pressure lubricating oil can't meet the cooling requirements of the occasion. Spray lubrication is to contain oil mist spray dry compressed air to the imported bearing internal lubrication, use less oil, due to the effect of air, cooling effect is extremely strong, it is mainly used for high speed and high precision of rolling of large roll imported bearing, or to often do not remove the roll in the imported bearing box imported bearings. Pressure oil lubrication and oil lubrication needs to be installed into and out of the tubing, lubrication pump, oil reservoir, sometimes need to lube oil cooler, therefore, the cost is higher, roll bearing import less commonly use. Second, the configuration model ( 1) And spherical roller bearing early mill imported bearing in rolling mill configuration pattern is different from now on, at the time mainly adopts two sets of spherical roller bearing and installed in the same roll neck. This configuration type basic can meet the production condition at that time, speed up to 600 RPM. But with the improvement of speed, its shortcomings increasingly prominent: imported bearing life is short, the consumption of large, low finished product precision and roll neck wear serious, rolling roller to leap into big, etc. ( 2) , four row cylindrical roller bearing import + check advance mouth bearing imported cylindrical roller bearing inside diameter and the roll neck with tight fit, bear radial force, has a large load capacity, high limit speed, high precision, inside and outside the circle of separable and interchangeable, easy processing, low production cost, easy installation and disassembly, etc; Check the mouth bearing axial force, concrete structure could be selected according to the characteristics of the rolling mill to go. Overloading at low speed, with thrust roller bearing imports, with small axial clearance to withstand the thrust load. When high speed, with imported angular contact ball bearing, not only limit rotational speed is high, and axial clearance can be strictly controlled while working. Make close axial lead of the roll, and can withstand axial load force in general. The imported bearing configuration model not only has imported bearing long life, high reliability, and rolling finished products of high precision, easy to control, and many other advantages, so the most widely used at present, more than used for wire mill, plate mill, cold rolling mill and foil mill, double support mill support roller hot rolling mill, etc. ( 3) Imported, imported four row circular cone roller bearings taper roller bearings can withstand radial force, but also bear axial force, no configuration check advance bearing, so the host appears to be more compact. Tapered roller imported bearing inside diameter and the roll neck using loose fit, install and disassemble very convenient, but sometimes caused by loose fit slide creep, inner diameter often have spiral groove processing. This configuration type at present is still more widely used, such as four roller hot rolling mill and cold rolling mill work roll, roughing mill, steel rolling mill roll, etc.