Training Manual . - SPb. : St. Petersburg Mining Institute, 1997. - 49 s. In the training manual, the design and electrical schemes of ballpoint drilling machines are considered, as well as the requirements for the drive of the rotator, the circuit of the electric drive of the rotator. Technical characteristics of drilling rigs SBSH-250, BUSH-250, SBSH-200, 2SBSH-200 and others. The operating modes, issues of determining the power of the motor of the rotary, the vibration sensor scheme and the circuit providing the constant power mode of the drive are considered. Examples of calculation with the use of PC power of the electric motor of the rotary drilling machine. are given.. The manual is designed for students of specialty 180400 "Electric drive and automation of industrial plants and technological complexes" and 170100 "Mining machines and equipment" , and can also be used by engineering workers, engaged in the design and operation of electrical equipment for drilling machine ball-hole drilling.