For needle roller bearing to consider two aspects

For needle roller bearing to consider two aspects of the release date: 2019 - 06 - 04 14:30:47 click: 135 for needle roller bearing, must consider the needle roller bearing end face and the contact stress between the guard, this aspect can use the formula to calculate. Needle roller bearing with the more a way of design, is the needle roller bearing end face is flat, and son would be connected to a convex shape it will be a circular arc Angle, and guard can also be a part of the plane. But, when asked in the needle roller bearing needle roller bearing between end face and guard carry thrust load, sometimes will guard design into a cone. In this case, the roller chamfer will contact with the rim, rim and the Angle between the radial plane called guard Angle. In addition, can also be needle bearing roller design into a spherical end face, let the spherical end face of the roller and inclined rim contact, this structure will help improve the lubrication, but will reduce the guard's ability to guide roller. In this case, must rely on a plane to control roller skew, ensure that the bearing can normal operation. In order to facilitate calculation, it is assumed that the sphere radius is equal to the end of the spherical roller radius, and the radius of the cylinder can use the tapered guard in place of radius of curvature to approximate theory contact. According to the known elastic contact load, a roller, and penal factors such as material properties and geometric parameters of contact, the contact stress and deformation can be calculated. But this method can calculate the needle roller bearing roller end face and penal contact stress is only approximate, because the fluid end face and guard does not meet the assumption of half space. In addition, the radius of curvature of the tapered guard is not constant, but along the contact width in change. So this method is only applicable to full spherical liquid face contact with conical guard. A: one-way needle roller bearing is used to maintain attention next: how to prevent needle bearing rust