The DQ series top auxiliary brake drives were developed to provide the market with more reliable technology and more hoisting performance. Advanced variable frequency AC motor drive technology adopted, which has accurate controls of torque and speed. The electric drove system is more flexible and reliable. Compared with the traditional rotatory table drilling operation, it has the advantages of faster drilling, higher production ratio, and lower cost. Included but not limited by the advantages mentioned, the DQ series of top drives might be your best choice.