The pressure generation of a parallel slide-way with an oil groove is examined experimentally and theoretically. In the experiments, the friction force, floating height and oil film pressure are measured with chaning sliding speed, groove intervals and lubricants. The experimental results whow that the friction property of the parallel slide-way with an oil groove is dominated by a hydrodynamic lubrication mechanism in high sliding speed condition and in mixed lubrication condition. Oil pressure generated at the entrance from the groove to the sliding surface and elastic distortion of the slider are taken into consideration in calculating the oil film pressure generation. The calculated results show that the slider is distorted elastically and forms a micro wedge, and consequently a sufficient load carrying ability is generated. The measured oil pressure distribution resembles the calculated pressure distribution.q
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