And other lubrication of rolling bearings SKF bearing lubrication principles are basically the same, but SKF bearings relatively poor working conditions, whether its performance can be effectively depends largely on the bearing lubrication.
SKF bearing lubrication grease and oil lubrication.
Grease lubrication grease both the seal, the seal structure and lubrication facilities is simple, easy to add grease, working conditions, SKF bearings are generally lubricated with grease.
The cooling effect of the oil lubrication, dirt and moisture away from the bearing. SKF bearings with oil lubrication pressure lubrication, fuel injection lubrication, oil mist lubrication and oil lubrication.
Pressure lubrication is the SKF Bearings most effective conventional speed lubrication.
Fuel injection lubrication lubricating oil by a certain pressure mounted on the bearing side of the injector is injected into the interior of the bearing lubrication, generally used in high-speed SKF bearings, pressure lubrication can not meet the cooling requirements of the occasion.
Spray lubrication is dry compressed air containing oil mist sprayed into the bearing lubrication, use less oil, due to the role of the air, the cooling effect is strong, mainly for the high rolling speed and high precision rolling large SKF bearings, or infrequently used in the bearing housing demolition SKF bearings.
Pressure lubrication and injection lubrication needs to be installed into the tubing, lubrication pump, oil reservoir, oil cooler sometimes need, therefore, higher cost, less use of general SKF bearings.
(1), spherical roller bearings
Early cylindrical roller bearing + thrust bearing
Cylindrical roller bearing inner diameter of the roll neck is a tight fit, radial force, with a large load capacity, high limiting speed, high precision, inside and outside the ring is detachable and can be used interchangeably, easy processing, low production costs, easy installation and removal, etc. ; thrust bearings can support axial forces, the specific structure type can be selected according to the characteristics of the mill.
Heavy low-thrust roller bearings with thrust load to bear, with a smaller axial clearance. When the rolling speed is high with angular contact ball bearings, not only high speed limit, and the work can be strictly controlled axial clearance. Roll close axial guidance, can withstand axial load.
Bearing configuration type has a long bearing life, high reliability, but also has rolled products, high precision, easy to control, and many other advantages, the most widely used for wire rod mill, plate mill, foil mill, double support rollers mill and cold rolling mill and rolling mill and other support roller.
(3), four-row tapered roller bearings
Tapered roller bearings can withstand radial forces and axial forces, do not need to configure the thrust bearing, the host is even more compact. Tapered roller bearing inner diameter of the roll neck loose fitting, installation and removal is very convenient, but sometimes loose fit sliding creep, diameter often processed spiral oil sump.
This type of configuration application is still relatively wide, four-roller hot rolling mill and cold rolling mill work rolls, blooming machine, structural steel mill and other occasions roll.