S m industries manufactures pillar-drilling machines. Spindle sleeve [ram] of a pillar-drilling machine is made from ms, grounded and guided in accurately honned head stock bore. Spindle shaft is made from en 8. Gears in pillar-drilling machines of 20 mm capacity are made from ms, which are hob cut, whereas gears in 25 and 32 mm capacity machines are made from best quality graded ci, which are helical and hob cut. Spindle-gears affixed in a machine of 20 mm capacity, rotate in pulley, fitted with gun metal bushing, whereas in pillar-drilling machines bearing 25 and 32 mm capacity, the spindle-gear rotates within ball bearing provided in the pulley. The pillar is made from heavy-duty seamless pipe, which is accurately ground and hard chrome plated. All working parts are ground to maximum accuracy. These pillar-drilling machines are manufactured from select graded materials, characterised by excellent machine ability and high damping capacity. Applications cover a diverse spectrum of operations like drilling, reaming, tapping, boring, lapping, etc.
