...Hiroyuki Ohta; Yusuke Ueki This article deals with the expressions of friction force of a four-point contact linear ball bearing with two rows under low-speed operation. First, the slip velocity on a contact area and the equilibrium of moments acting on a ball were theoretically examined...

...Van-Canh Tong; Gyungho Khim; Seong-Wook Hong This article presents the effects of carriage flexibility on the friction force in linear ball guides, which includes hydrodynamic rolling friction, elastic hysteresis friction, slip friction, and drag friction. To this end, we developed a computational...

... of the deep groove ball bearings (DGBBs) with local defect using a new displacement excitation function based on the Hertz contact theory and Newton's second law. The DGBB is modeled as a two degrees-of-freedom system, and an additional friction force in the defect zone, the influence of centrifugal force...

...Zhuang Chen; Guanci Chen The motions between the ball and raceway in a ball bearing involve rolling, gyroscopic, and spin slide. These complex motions result in the serious distribution of the friction force. Based on the contact mechanics in tribology, the friction force greatly affects stress...

...Kai Feng; Shigehiko Kaneko A complete analytical model of bump-type foil bearings taking into consideration the effects of four factors, i.e., the elasticity of bump foil, the interaction forces between bumps, the friction forces at the contact surfaces, and the local deflection of top foil...

... and adhesion friction force near-contact recording Reducing the flying height (FH) of sliders is a requirement for achieving higher recording densities in hard disk drives (HDDs). The Wallace spacing loss equation indicates that the magnetic signal decreases exponentially as the distance increases...

... friction force, however, is shown to be of a much smaller order than the contact normal force. All the normal components of various contact forces ( d F N ) are parallel and can be algebraically summed by statistical means to obtain the total normal force of one surface on another. We...

... meniscus adhesion force friction force near-contact recording When the flying height of a slider is decreased to several nanometers over a smooth disk surface with small micro-waviness and roughness, the slider often exhibits a severe bouncing vibration whose fundamental frequency is close...

... might fail. In this paper, a new simplified friction model was proposed based on experimental observations. The model was implemented into a L∕UL simulation code. Two cases were studied: a 10,000 rpm ∕ 84 mm server drive and a 3600 rpm ∕ 25.4 mm microdrive. The PSA and friction force effects...