In some overloaded and has certain requirements for speed of machine tool applications - such as forging snagging, pipeline car silk machine, heavy duty lathe and milling machine, etc., choose precision taper roller Bearings SKF http://hhlph.ymyu3.com/ is a kind of ideal solution.As a result of the tapered roller bearing roller is the design of the line contact, so it can offer high rigidity and bearing for the spindle;In addition, tapered roller bearing is a kind of pure rolling bearing is designed, it can be a very good low bearing operating torque and fever, to ensure that the spindle rotation speed and precision.Because of the tapered roller bearing to adjust axial preloading during the installation process (clearance), it can let the customer in the bearing throughout the life of the SKF Bearing http://dsyvb.ymyu3.com/ clearance adjustment better optimization.
In addition, in some of the inner ring guard linear velocity of more than 30 m/s high speed applications, the specific design of the tapered roller bearing can meet the requirements, such as TSMA bearing or Hydra - Rib hydraulic floating guard bearing.TSMA guard have multiple axial direction of the bearing lubricating oil hole, can adopt circulating oil lubrication or oil mist lubrication, centrifugal oil can be distributed to the roller in contact with the rim area, which can more fully lubricated bearing, improve the speed of the bearing.And Hydra - Rib hydraulic floating guard bearing spindle system is designed to optimize the preloading and design, the bearing can be floating guard, contact with the roller large end, unlike common bearing are fixed inner ring guard;Guard and the float positioning by the "pressure" system, so it can ensure the bearing under various working conditions can play the most superior performance, and has been successfully used in the domestic customers.
For the precision of the tapered roller bearing selection, ISO level P5 bearing is mainly used in the conventional lathe and milling machine;If it is a processing center, grinder, such as application, usually choose ISO P4 precision bearing or above.In the design of main shaft, there are two common taper roller bearing layout.The first is a front-end and back-end each with a taper roller bearing, and used in a face-to-face installations;This kind of design compact structure, high rigidity and convenient installation and adjustment.
The second is to use two circular cone roller bearings installed as the front end of the spindle, face to face and then end the use of a double outer ring and two single inner ring of the bearing (TDO) used as a floating end;Because of the floating ability, this kind of design can be a very good bear the axial thermal expansion of the spindle, and the stiffness is very high, ensure the accuracy of the machine tool.