Compact and reliable machine for precise sharpening of the cutting units of chains for electric and petrol chainsaws. The sharpening circle measures 100x23x3.2 mm. The machine is equipped with a powerful engine and at the same time with low vibration levels, which makes it comfortable to work. The working speed of the sharpening wheels is at least 5000 revolutions per minute, nominal diameter 108 mm. An advantage of the device is the ability for the user to adjust the sharpening angle himself. It is equipped with a convenient mechanism for tightening the chain, a guard, a comfortable handle, a stable base.