Study on oil film pressure distribution and load capacity of textured rolling bearings

Abstract

Purpose The purpose of this study is to reveal the tribological performance of the textured rolling bearing. Design/methodology/approach In the present study, the oil film pressure distribution and load capacity analysis method are established, which integrate the micro-texture model and Hydrodynamic lubrication (HL) methods. The tribological performances of the textured rolling bearing under the various working condition, texture dimension and texture type are investigated systematically. Findings The results show that the oil film load capacity increases with the increase in the texture size. As the texture depth increases, the oil film load capacity increases first and then decreases, and then the load capacity is the largest at the texture depth range of 3 to 5 µm. In addition, the oil film load capacity of the matching pairs, such as Si4N3-Si4N3, GCr15- Si4N3 and GCr15-GCr15 are compared; the results show that the cases of using ceramic material can improve oil film load capacity of textured rolling bearing. Originality/value The current manuscript can be useful for supporting the reliability and life research of textured rolling bearing. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2020-0055

An improved TEHL analysis of textured roller bearings consider various texture parameters and slip

“…Infrared thermography is used to measure the contact area between the roller and the inner ring (inlet area), as shown in Figure 8(a). More detailed introduction of the test rig and test method can be found in reference (Xu et al, 2019;Han et al, 2020). Here the test condition: texture type is circle texture; texture spacing is 0.3 mm; texture size is 0.08 mm; slide-to-roll ratios is 0.7; roller speed is 5,000 r/min; and radial load is 500 N. Experiment's period is 10 min.…”

“…A method of optimizing surface morphology of rolling bearing was adopted by Wang et al(2020) to improve lubrication; the optimized surface promotes the transition from mixed lubrication to full film lubrication, which alleviated the problem of surface damage because of insufficient lubrication and prolongated the service life. By integrating the micro-texture model and HL method, Han et al(2020) built the oil film pressure distribution and load capacity analysis model, and then the pressure distribution and oil film load capacity of the textured rolling bearing under the various texture dimension and texture type are analyzed; however, the analysis of temperature distribution is missing. In previous research, less attention has been paid to the relationship among texture parameters and slip and lubrication performance of textured roller bearings.…”

Effect of micro-textures on lubrication characteristics of spur gears under 3D line-contact EHL model

“…It was generally believed that the micro-pits in the surface texture can store lubricant, reduce the actual contact area and capture wear debris. In addition, these micro-pits are also conducive to the establishment of additional fluid dynamic pressure and the increase of local film thickness, thereby the friction performance of the surface is improved (Han et al, 2020;Rosenkranz et al, 2015;Wang, 2014). The application of LST in mechanical seals was first investigated by Etsion and Burstein (1996).…”

Influence mechanism of surface texture on the output performance of an ultrasonic motor

“…Textured interfaces can also improve the tribological and wear properties of the contact interface. Many studies mainly focused on the influence mechanism of surface textures under lubrication conditions (Zhang and Zhang, 2020; Syed and Beera, 2019; Han et al , 2020). A surface texture provides continuous lubrication of the tribo-pair and improves the bearing capacity of the lubricating film (Lal and Singh, 2019; Yin et al , 2019).…”