Suitable for mill use bearing requirements

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 Mill used in bearings have special requirements different from other machinery and equipment bearing
 
 First, the method of lubricati on
 Other lubrication of rolling bearings and roller bearing lubrication principles are basically the same, just roll bearings is relatively poor working conditions, its performance to the availability of effective depends largely on the bearing lubrication.

 Roller bearing lubrication grease and oil lubrication.
 
 Both grease lubrication grease seal, sealing and lubrication facilities is simple, supplement grease convenient,, so long as the conditions allow, the roller bearings are generally lubricated with grease.roller thrust bearings
 
 The cooling effect of the oil lubrication, dirt and moisture away from the bearing. Lubrication of roller bearings with oil lubrication pressure lubrication, fuel injection lubrication, oil mist lubrication and oil lubrication.

 Pressure lubrication is the most effective lubrication of roller bearings in the conventional speed.buy bearing

 The fuel injection lubrication lubrication, lubricating oil pressure through the nozzle mounted on the bearing side of the spray into the bearing within the general application of the high-speed roller bearings, pressure lubrication can not meet the cooling requirements of the occasion.

 Spray lubrication is dry compressed air containing oil mist sprayed inside the bearing lubrication, oil less strong due to the role of the air, the cooling effect is mainly used for high rolling speed and rolling high precision, large roller bearings , or not often demolished in the bearing housing roller bearings.double row bearing

 Pressure lubrication and the lubrication of fuel injection needs to be installed into the flowlines, lubrication pumps, storage, and sometimes also the oil cooler, therefore, higher cost, generally roller bearing less used.

 Second, the configuration type

 (1), spherical roller bearings

  Early mill bearing configuration type on the mill, and now, two sets of self-aligning roller bearings installed side by side in the same roll neck. This configuration type to meet the basic production conditions and the rolling speed up to 600rpm. But as the speeds increase, the drawback is more prominent: a short bearing life, consumption of large, low accuracy of the finished product, badly worn roll neck roll axial movement, and so on.
 
 (2), four cylindrical roller bearings + thrust bearing

  Cylindrical roller bearing inner diameter of the roll neck tight fit, radial force, large load capacity, high limiting speed, high accuracy, inner and outer rings detachable and interchangeable, easy processing, low production costs, easy in stallation and removal, etc. ; thrust bearing axial force, the specific structure type can be selected according to the characteristics of the mill.

 , Together with the heavy low thrust roller bearings to withstand thrust load, with a smaller axial clearance. When the rolling speed is high, together with the angular contact ball bearings, not only the high speed limit, and the axial clearance can be strictly controlled. Roll close axial guidance, and can withstand axial load force.

 This bearing configuration type not only has a long bearing life, high reliability, and rolled products of high precision, easy to control and many other advantages, so the most widely used for wire rod mill, plate mill, foil mill, pairs of support rollers support rollers of the mill cold rolling mill and hot rolling mill.

 (3), four tapered roller bearings

  Tapered roller bearings can withstand the radial force, but also to withst and the axial force, thrust bearing requires no configuration, so the host is more compact. The tapered roller bearing bore diameter and roll neck loose with the installation and removal is very convenient, but sometimes due to loose fit sliding creep, so the inside diameter often processed spiral tank.

 This configuration type application is still more widely, such as four-roll hot-rolling mill and cold rolling mill work rolls, roll open blank machine, structural steel mill and other occasions.