Through water-cooled bearing housing side end face tells Rolling lower temperature is necessary and effective. When oil lubrication bearing outer ring on both sides of the maximum temperature in the lower part of the outer ring, which is due to the water-cooled bearing housing side end surface area is small, and bearing bottom surface of the heat conduction due. Straightening machine bearing oil lubrication to reduce the operating temperature of the bearing effect is more obvious.

Under oil lubrication conditions bearing a stress field from the current study to see, when using the finite element method inside the bearing load distribution analysis, three-dimensional stress model bearing caster straightening machine for ease of bearings and bearing temperature field stress field coupling solved more realistically simulate the contact situation between the various components of the bearing forces, bearing a three-dimensional stress model established with the following characteristics: (1) Consider the corresponding node of transformation and bearing temperature field and stress field unit so to analyze the impact of temperature on the air shaft bearing stress on the basis of the calculation of the temperature field. (2) between the shaft and the bearing inner ring, the bearing, have adopted the contact element between the outer ring and the bearing outer ring and the ball bearing to simulate the contact between them. (3) bearing the three-dimensional stress model unit uses time division eight-node hexahedral elements, using a total of three-dimensional unit 414, the contact element 239.

Let clearance shaft and bearing inner ring, ball bearings and bearing inner and outer rings, and a bearing outer ring and bearing zero clearance between the contact elements bearing oil lubrication system stress field are zero. Bearings with oil lubrication and bearing cooling measures, five tons of load forces applied at the center line of the shaft.