Characteristics of Duplex Angular Contact Ball Bearing with Combined External Loads and Angular Misalignment

Abstract

As a kind of common phenomenon in practical engineering, misalignment error considerably changes the working performance of bearing. However, it has rarely attracted attention in the study of duplex angular contact ball bearings (DACBBs). To evaluate the influence of misalignment on DACBB, an analytical model of DACBB considering combined loads and angular misalignment is established for back-to-back, face-to-face, and tandem configurations. According to the geometrical relationship inside the bearing, the deformations caused by external load and angular misalignment are systematically analyzed. On this basis, the effects of external load, axial preload, and angular misalignment on the displacement, maximum contact load, contact load distribution, contact angle, and fatigue life of DACBB are analyzed. The results demonstrate the high dependence of the contact load and contact angle on the above factors. Angular misalignment causes the fluctuation of contact load and contact angle distributions along the azimuth angle of a rolling ball. Nonlinear relationships between fatigue life of DACBB, angular misalignment, and axial preload are obtained. The occurrence of angular misalignment considerably decreases the fatigue life of DACBB. The results suggest the necessity of angular misalignment analysis for DACBB.

Research on Multi-Stage Composite Loading Process Control Method for Roller Staking of Self-Lubricating Spherical Plain Bearings

“…Through the analysis of the deformation degree of the f and the process quality, it is shown that the feeding displacement and the st should be controlled. In practice, the "displacement-time control of uniform s ing" or "force-time control of constant force feeding" is often adopted [25][26][27][28] the above analysis shows that when the "displacement-time control of unif feeding" is adopted, it causes bearing "locking" and material damage at a la the roller staking process [10,29]. For the "force-time control of constant forc the contact position between the roller and the flanging lip is likely to be press "pit" in the initial stage of the process, which will damage the material of the f [30,31].…”

Study on Simplified Model and Numerical Solution of High-Speed Angular Contact Ball Bearing

“…z + i) − self.bound (0, 2 * self. z + i)) * rnd(k) (5) for i in range (0, self.len-2 * self.z): (6) self.X (2 * self.z + i) � self.chrom3(i) # δa, δr #self.X (2 * self.z + 1) � self.chrom3(2 * self.z + 1) #self.X (4 * self.z + 2) � self.chrom(4 * self.z + 2) (7) super().some_necessary_calculations() (8) r � 0 (9) while r < self.z: (10) if self.A1 (r) < 0 or self.A2 (r) < 0: (11) rnd � np.random.random (size � self.len-2 * self.z) # example: if self.len � 5, rnd � (0.29049083 0.96149427 0.75) (12) for i, k in zip (range (0, self.len-2 * self.z), range (0, self.len -2 * self.z)): (13) self.chrom3(i) � self.bound (0, 2 * self.…”

“…Subsequently, Harris et al [3] further improved the model, which is referred to as the Jones-Harris (J-H) model. Because the J-H model is effective and accurate for the calculation of internal load distribution, contact angle variation, fatigue life, and stiffness [4][5][6][7][8][9][10][11] of high-speed ball bearings, the model is still widely applied.…”