This work focused on the experimental study of grease lubrication mechanisms around contacts in radial ball bearing 6314. The main objective this was to show influence conformities and their impact bearings. For experiments, a tribometer ball-on-ring configuration used fluorescence microscopy chosen as observation method. results showed that, under starvation conditions, conformity 0.52 at velo...

China’s rapid industrial development requires more energy consumption based on non-renewable resources. The caused by unnecessary friction accounts for about 4.5% of the GDP in China. Although grease effectively lubricates machines, lubrication failure may occur under severe conditions. Nanomaterials exhibit intriguing tribological performances and have received much attention regarding lubrica...

Various types of high-pressure equipment, including airless paint sprayers, hydraulic apparatus and grease guns, are used in industry, in farming and in the home. Injection injuries from this equipment usually involve the hand and may initially appear benign. However, these injuries must be treated quickly and aggressively to prevent significant long-term disability.

The evolution of the film thickness in a grease lubricated rolling bearings is given by continuous process loss and replenishment oil track. It believed that long run, maintained bleeding from reservoirs. capabilities thus have an impact on and/or bearing life. ability to bleed changes during operation due mechanical ageing, which affects fiber structure grease. In this study lubricating consid...

Two phosphonium-derived ionic liquids: trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate (IL1) and tricyanomethanide (IL2) were used as additives in lithium complex- (G1) anhydrous calcium-based (G2) greases at 5 wt%. Friction torque wear tests performed using a modified four-ball machine for testing rolling bearings order to determine the friction reducing properties of these grease sam...

Surface texturing-plasma nitriding duplex treatment was conducted on AISI 316 stainless steel to improve its tribological performance. Tribological behaviors of ground 316 substrates, plasma-nitrided 316 (PN-316), surface-textured 316 (ST-316), and duplex-treated 316 (DT-316) in air and under grease lubrication were investigated using a pin-on-disc rotary tribometer against counterparts of high...

Greases with two different thickeners, namely lithium complex (LiX) and polypropylene (PP), three base oil viscosities were investigated in fretting varying displacement amplitude applied normal load. The material combinations silver-coated copper/silver-coated copper (Ag/Cu vs Ag/Cu) steel/steel investigated. Fretting maps of four the six evaluated greases constructed as a tool to better under...

The tribological behavior of novel 7.5 wt% carbon nanotube-based lubricant greases in PAO (polyalphaolefin) oil with and without 1.0 MoS2, together several other commercial such as calcium, lithium, were studied. test results showed a marked reduction frictional coefficient achieved by the CNTs based grease samples an average benefit around 30% compared to conventional greases. steady state und...