Commonly used in the rolling mill bearing configuration model

( 1) , spherical roller bearing, 轴承) Early on the rolling mill bearing in rolling mill configuration ( 部署) Type, unlike now, then mainly adopts two sets of spherical roller bearing and install ( ān zhuāng) In the same roll ( gǔn) Neck. This configuration type basic can meet the production condition at that time, 挑剑) , speed up to 600 RPM. But with the improvement of speed, its shortcomings increasingly prominent: bearing life ( 一生) Short, large consumption, the precision ( Accuracy) Low, roll neck wear serious, rolling roller to leap into big, etc. ( 2) , four row cylindrical roller bearings, 轴承) + thrust bearing 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 ring can be separated and interchangeable, easy processing, production, 生产) The advantages of low cost, easy installation and removal. Thrust bearing axial force, concrete structure could be selected according to the characteristics of the rolling mill to go. Overloading when low speed, thrust roller bearings, with small axial clearance to withstand the thrust load. Thin wall bearings manufacturer of angular contact ball bearings can match the optimal number of balls and the contact Angle of 30 °. They support radial load is higher than contact bearing deep groove ball bearings or four o 'clock, and can support comes from the same direction of axial load. In view of the special demand, when the rolling speed is high, with angular contact ball bearing, not only limit speed ( 转速) High and work ( 工作) When the axial clearance can be strictly control ( 控制) 。 Make close axial lead of the roll, and can withstand axial load force in general. This type is not only a long bearing life, bearing configuration, high reliability and has the precision of rolling ( Accuracy) Many advantages such as high, easy to control, so the current application ( 应用程序) The most widely ( 广泛) , usually for wire mill, plate mill and foil mill, double support roller ( gǔn) Support roller mill of cold rolling mill and hot rolling mill. ( 3) , four row circular cone roller bearings ( 轴承) Tapered roller bearings can withstand radial force, but also bear axial force, no configuration thrust bearing, so the host appears to be more compact. Bearing bearing lubrication method, divided into grease lubrication and oil lubrication. In order to make the bearing function well, first of all, to choose suitable for conditions of use, the purpose of lubrication method. If only consider lubrication and oil lubrication. However, grease lubrication can simplify the structure of bearing the surrounding of the special features, compare the pros and cons of grease lubrication and oil lubrication. Tapered roller 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 pattern is applied ( 应用程序) Is still relatively wide, such as four roll ( gǔn) Hot rolling mill and cold rolling mill ( 工作) Roller, roughing mill, steel rolling mill roll, etc. A: fracture cause of the bearing ring next article: extend the service life of the one-way bearing must be attention