• Micro Machines

Centreless Grinder

Micro Machines offers a centreless grinder, with suitable grinding wheels, designed to grind a wide range of materials like hardened and unhardened steel, cast iron, stainless steel, brass, aluminium, etc. This is suitable for grinding of cylinders, long bars, steeped cylinders, tapered parts, profiled jobs, etc. Grinder bed is made of one piece, seasoned, graded cast iron. The place on which slides are mounted is made extremely rigid by providing ribs that form a grid structure, which minimizes vibrations. The grinding wheel head is fixed. The spindle made of alloy steel, is case hardened to improve the wear resistance and toughness. The bearings are either taper roller bearings or of bush type. The spindle runs in an oil filled chamber and is driven by V-belts. The regulating wheel side has two slides thoroughly scraped to match each other. The slides are uniformly loaded all along the length of travel by tapered wedges, a feature that helps in uniform motion without vibration, leading to longer life of slides than conventional design. Regulating wheel slide can be swivelled in horizontal plane to provide perfect contact between the job and grinding wheel in through feed and plunge cut grinding operation. This feature helps in saving undue dressing of grinding wheel. Regulating wheel assembly can be swivelled in vertical plane to get desired feed of work piece in through feed grinding. In doing so, the regulating wheel is to be dressed in hyperbolic shape so that perfect line contact is obtained between regulating wheel, workpiece and workrest. The regulating wheel is driven by alloy steel worm and phosphorous bronze worm wheel. The shaft has an outboard support to avoid vibration during grinding operation. The machine is available in brass type and bearing type models, in different sizes.