Characteristics of hydrostatic bearing/seal parts for water hydraulic pumps and motors. Part 1: Experiment and theory

Wang, X.; Yamaguchi, Atsushi

doi:10.1016/s0301-679x(02)00023-3

Cited by 68 publications

(41 citation statements)

References 11 publications

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“…However, these bearings also have limitations [5]. Gas pumps and pipelines are absolutely necessary for hydrostatic bearings, which results in high operation costs and bulky systems [6]. Serious wear will appear in the starting or stopping stage of hydrodynamic bearings, and an eccentricity phenomenon is inevitable [7].…”

Section: Introductionmentioning

confidence: 99%

A Novel Noncontact Ultrasonic Levitating Bearing Excited by Piezoelectric Ceramics

Quan

Deng

et al. 2016

Applied Sciences

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A novel ultrasonic levitating bearing excited by three piezoelectric transducers is presented in this work. The transducers are circumferentially equispaced in a housing, with their center lines going through the rotation center of a spindle. This noncontact bearing has the ability to self-align and carry radical and axial loads simultaneously. A finite element model of the bearing is built in ANSYS, and modal analysis and harmonious response analysis are conducted to investigate its characteristics and driving parameters. Based on nonlinear acoustic theory and a thermodynamic theory of ideal gas, the radical and lateral load-carrying models are built to predict the bearing's carrying capacity. In order to validate the bearing's levitation force, a test system is established and levitating experiments are conducted. The experimental data match well with the theoretical results. The experiments reveal that the maximum radical and axial levitating loads of the proposed bearing are about 15 N and 6 N, respectively, when the piezoelectric transducers operate at a working frequency of 16.11 kHz and a voltage of 150 V p-p .

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Section: Introductionmentioning

confidence: 99%

A Novel Noncontact Ultrasonic Levitating Bearing Excited by Piezoelectric Ceramics

Quan

Deng

et al. 2016

Applied Sciences

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“…And the bearing deformation was also taken into account. WANG [4][5] studied the influence of oil film, the flow rate to the stiffness of the hydrostatic thrust bearing by theory and experiment. KAZAMA [6][7] proposed an optimum design method for the elastic deformation of the oil lubricated nonmetallic bearing.…”

Section: Introductionmentioning

confidence: 99%

Loading Capacity Analysis of Hydrostatic Oil Pad Based on Fluid-structure Coupling

Zhao¹,

Zhang²,

Yu³

2016

Proceedings of the 2016 International Conference on Mechatronics Engineering and Information Technology

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Abstract. Hydrostatic guideway is the key component of heavy-duty CNC machine tool feed system. The working performance of the hydrostatic guideway have great influence to the accuracy of machine tool. In order to analysis the performance of the oil pad, a calculation method based on Reynolds equation and the thin plate deformation equation, considering the fluid-structure coupling, is established. The influence of film thickness, oil supply parameter and inclination to the performance of the oil pad are discussed. It is shows that loading capacity declined compared with the situation which is not considering the fluid-structure coupling.

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“…Koc and Hooke [1] examined the effect of of the tilting couples on the behavior of the slippers experimentally. Wang and Yamaguchi [2], [3] clarified experimentally and theoretically the effects of nozzle and thermoplastic materials on the characteristics of hydrostatic bearing/seal parts in water hydraulic axial pumps and motors. Manring [4] investigated the effects of pressure-induced deformations on the characteristics of hydrostatic thrust bearing.…”

Section: Introductionmentioning

confidence: 99%

A Computational Approach on the Load Carrying Capacity of a Slipper Bearing

Choudhuri¹

2012

IJET

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Abstract-The slipper bearing is an integrated part of an axial piston pump. Proper lubrication is important for successful operation of the slipper bearing. This type of bearing is a type of hydrostatic thrust bearing. Many works have been done in the recent past on this type of bearing. This current work is based on the load carrying capacity of this type of bearing. The leakage losses and the slipper drag are two important factors on which this type of bearing is designed. The load carrying capacity has a direct impact on those two factors. There are many input factors on which the load carrying capacity is varied. These input factors are thus playing an important role on the smooth operation of such bearing. Such input variable are slipper tilt, applied pressure on the slipper, slipper speed, slipper non flatness angle or slipper land size. On the variation of these input variables, the nature of load carrying capacity has been carried out in this work. It has been observed that with the increase of pressure, speed, area of land size and conical angle of the land, the load carrying capacity increases.

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Characteristics of hydrostatic bearing/seal parts for water hydraulic pumps and motors. Part 1: Experiment and theory

Cited by 68 publications

References 11 publications

A Novel Noncontact Ultrasonic Levitating Bearing Excited by Piezoelectric Ceramics

A Novel Noncontact Ultrasonic Levitating Bearing Excited by Piezoelectric Ceramics

Loading Capacity Analysis of Hydrostatic Oil Pad Based on Fluid-structure Coupling

A Computational Approach on the Load Carrying Capacity of a Slipper Bearing

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