The advantages of FAG spindle bearing contact Angle size

FAG spindle bearing contact Angle 2020 - size advantage 05 - The spindle bearing is on the spindle of machine tools and precision equipment using one of the important parts. In the main shaft of the transmission process, can have the effect of support rotation and reduces friction. FAG precision spindle bearing means is not only a good product, is also a 'higher speed, higher accuracy, longer life, more cost effective'. FAG spindle bearings commonly used contact Angle is 15 & deg; ,20度; And 25 & deg; 。 The use of different contact Angle on bearing performance also is distinguishing. Such as contact Angle of 15 & deg; Spindle bearing rigid preloaded with a temperature difference between the shaft and bearing seat is very sensitive, especially when bearing spacing is small, also can produce radial force. For 20 & deg; Or 25 & deg; Contact Angle of the main shaft bearing, if the spacing of larger bearing group, are less sensitive to temperature change. The size of the spindle bearing contact Angle also has an effect on stiffness of the bearing system. 15° Contact Angle of bearing axial stiffness is approximately 25 & deg; 45% of the contact Angle of bearing, but the radial stiffness was only 10% higher. If you consider the entire spindle bearing and cantilever system, due to 25 & deg; Contact Angle of bearing arrangement support span than 15 & deg; Contact Angle of bearing, so the former radial stiffness is better than the latter. Contact Angle is 20 & deg; The bearing can provide a good compromise. If structure allows, under the rigid preloading is advised to choose a suitable spacing of the bearing arrangement, the axis of the radial and axial thermal expansion can be compensated by preloaded. Best L is associated with the contact Angle of bearing, bearing spacing for 25 & deg; Contact Angle of the main shaft bearing, the most suitable bearing distance L is about 3 times of the diameter of axle d; For 20 & deg; The contact Angle of the spindle bearing bearing spacing L is about 4 times the diameter of axle d; For 15 & deg; Contact Angle of the spindle bearing distance L tend to 5 times the diameter of axle d, but due to long distance between bearing shaft axial thermal expansion effect is not obvious, in actual application of this design is relatively rare. Three different contact Angle of bearings have different performance and application field, see the table below. FAG spindle bearing contact Angle on behalf of bearing axial bearing capacity of the contact Angle, the greater the corresponding axial bearing capacity. General contact Angle in the direction of the logo on the bearing outer ring surface of the cylinder, the open end of the arrow toward one end of the outer ring has a guard. See below. Hk united bearing focus bearing industry informationization service nearly 20 years, with many excellent bearing enterprise grows together, also witnessed China's bearing production technology from low to high development process. We will adhere to continue, the steadfast work, don't, don't give up, for the benign development of Chinese bearing industry do render some. Hk united bearing network bearing engineers, 2019. 11. 04