piston ball

Method of vibration diagnosis wear cylinder-piston pairs of hydraulic gear pumps with ball pistons

The method of pump’s cylinder-piston couple diagnostics for radial-piston hydromachine is stated. The experimental data on pump stator vibrations of high informational content, simplicity of receiving and processing are taken as diagnostic parameters. The method is based on the universal mathematical model of dynamic processes in the pump of radial plunger hydromachine with ball-pistols.