Comparison of vickers V‐104C and 20VQ5 vane pump wear rates for various water‐glycol hydraulic fluids

Abstract

Work is currently under way within the ASTM 0.02 N.07 'Hydraulic Fluid Testing' Committee to evaluate the potential of replacing the Vickers V-104C vane pump with a newer, more current model 20VQ5 vane pump for use in an updated ASTM D 2882 standard and other national standards. All the round robin work conducted within the Committee thus far has involved the use of non-aqueous hydraulic oils. Although there are some significant inter-laborato y reproducibility problems, it appears that the overall ranking of these hydraulic oils by most laboratories appears to be consistent. Tofurther evaluate the potential utility of replacing the Vickers V-104C pump with the 20VQ5 pump, a series of different water-glycol hydraulic fluid formulations with significantly diferent wear rates were evaluated using a 'modified' ASTM D 2882 testing procedure. The results showed that expected catastrophic pump failures, which occurred with the V-104C pump, not only did not occur with the 20VQ5 pump, but the relative orders of wear rates for some of the fluids were also different. Keywords pump tests, Vickers vane pump, wear rate, hydraulic fluid, lubrication, standard tests IN TRO DUCT10 NThere are two methods of evaluating the potential lubrication properties of a hydraulic fluid. One method is to conduct a pump test either as part of a laboratory test or as part of a field trial. However, this may be costly and is further complicated by the numerous pump manufacturers, types, models, and, especially, the varying material friction pairings used in the pump design. Over the years, only pump tests based on the Vickers V-104C vane pump, such as ASTM D 2882 and DIC 51 389, have achieved wide acceptability in the fluid power industry.

Vibration and temperature variation of the cam ring of a hydraulic vane pump associated with vane tip detachment

“…Takahashi and Takahashi (1978) investigated the effect of the cam profile on the pump noise level, and Giuffrida and Lanzafame (2005) discussed the cam profile in terms of flow rate. Totten et al (2000) proposed a test method using vane pumps to evaluate antiwear properties, and Totten et al (2002) discussed test methods in terms of wear rate. Nakahara et al (1990) investigated the lubrication characteristics between the vane tip and the cam-rig from the viewpoint of elastohydrodynamic lubrication (EHL) theory, and Mucchi et al (2013) reported that EHL contributed to low wear and friction.…”