A bench type of tool grinding machine with exhaust system GREENDER20 can be mounted on a table, workbench, or movable stand. Original vacuum system allows catching an abrasive dust at least 90%. A high efficiency filter allows using of up to 3 sets of abrasive wheels without changing and flushing. The sludge is removed by using a locksmith brush through a side opening. The machine is used for manual grinding of machine and bench tools (cutters, drills, drill bits, chisels), and for removal of burrs, chamfers, etc.