Dahanukar machine tools supplies manually and hydraulically operated rotary surface grinding machine, model ro-500, in various sizes. The base of the surface grinding machine is made of heavy-duty cast iron, amply proportioned and rotary table has guide, which is completely absorbed in oil. In build dressing segment, dressing attachment helps in quick and early dressing of segment. The column provided with the grinder is one piece and adequately ribbed to add to its rigidity and the surface grinding machine has guideways of vee and flat type, scraped for precise down feed accuracy. The spindle unit contains spindle and motor coupled together to offer positive motion and strong grinding action. The spindle is effectively loaded with preloaded antifriction bearings to impart rigidity to grinding vertical feed that is accurately graduated to the least count of 0.002 mm. Overall the surface grinding machine is suitable for mass production job with precise grinding accuracy.