In practical engineering, quality control of mechanical components or parts of rotational machinery is quite important. As for rolling bearings, the defects from rolling bodies, internal ring, external ring, and retainer are more focused on. Therefore, in this work, a vibration and noise test system is developed for the defect diagnosis of mechanical components above-mentioned. The key point of...

The difference between the maximum and minimum deviation of actual contour relative to ideal circle is roundness caused by uneven temperature wear ring during production operation, which will lead abnormal force. In this paper, a rigid flexible coupling dynamic model cylindrical roller bearing considering inner established study characteristics bearing. And stress contact force raceway or cage ...

A fault diagnosis strategy based on the wayside acoustic monitoring technique is investigated for locomotive bearing fault diagnosis. Inspired by the transient modeling analysis method based on correlation filtering analysis, a so-called Parametric-Mother-Doppler-Wavelet (PMDW) is constructed with six parameters, including a center characteristic frequency and five kinematic model parameters. A...

Web traction over rollers is known to deteriorate due to air entrainment at high web speeds. In this paper, a general model is presented to predict the traction capability of an impermeable web over a smooth roller. The model considers the effects of the web and roller speeds, roller radius, combined roughness of the two surfaces, web tension and thickness, friction coefficient, and compressibl...

Three-row roller slewing bearings are the core components of large-scale rotating equipment. It has a large structural size and is subjected to heavy loads, which requires extremely high carrying capacity. The effect finite element mesh on capacity accuracy three-row bearing investigated. A local model established analyze contact area between raceway, compared with Hertz theory verify reasonabl...

Abstract The flexible bearing is a key component of harmonic gear reducer for industrial robots. wave generator cam as assembly part will significantly affect the transmission state. This paper derives deformation coordination equation formula based on drive theories, and characteristics formed by different shapes were studied. Combined theory clabellon with load which are obtained, energy diss...

Bearing has been used extensively in numerous applications and their unplanned failure a consequential effect on the smooth operation of machinery. A slight misalignment bearing detrimental running most machines. Hence, paper leverages finite element technique to simulate different degrees (0.1°, 0.2°, 0.3°, 0.4°, 0.5°) dynamic behaviour cylindrical roller subjected typical operating conditions...

Abstract The axle load acts on the box unit and has shock-pulse nature when car is moving, that can lead to a mutual change in surface positions of roller ends with edges bearing races. ways are proposed optimize internal geometry radial end contact elements unit. It eliminate occurrence possible conditions movement rollers into thrust locking by increasing minimum limit clearance box.

The presence of the oscillating motion in a mechanical system, is vital terms service life. Because machine elements are under effect fatigue due to motion. life bearings which forefront among subjected motion, can be calculated via an equation that depends on several variables, one basic dynamic load rating (C). In this context, (C) most important factors estimating life.
 One where beari...

We are studying a hydraulic system design and vehicle dynamic modeling for a development of tire roller system, because those are very important in analysis of tire roller. Generally, tire roller is one of the useful machines in a road construction field and it technically applied for many other construction fields. Also, we conceptualize of new hydraulic and traction system, and define about t...