The maintenance period of Dongcheng cordless electric drill switches is generally half a year. Jiangsu Dongcheng Power Tools Co., Ltd., founded in 1995, is one of the leading domestic professional power tool manufacturing enterprises and a leading unit of the power tool branch of China Equipment Industry Association electrical. The company has a complete industrial production base, covering an area of 112,800 square meters and a construction area of 58,000 square meters; it has modern industrial facilities and first-class production and testing equipment; senior engineers, a team of middle and senior managers and a team of technical staff;
Are you asking the reason why the Dongcheng small electric drill makes an abnormal noise when reversed? The reasons for the abnormal noise of this drillelectrical are as follows:
1. Carbon brush position and pressure are inappropriate.
2. The commutator head is uneven, not round, the mica sheet protrudes, fire rings or sparks appear around the commutator head, and the armature winding (rotor) is shorted or damaged.
3. Mechanical failure (bearings, gears), lack of oil or damage.