Cutting equipment comprises a machine body, a power supply port, an electric connector matched with the power supply port, and a bearing protection device used for protecting the electric connector. A cavity with a leftward port is arranged in the power supply port. An insertion spring hole is formed in the right end wall of the cavity. An insertion spring matched with the insertion spring hole is fixedly arranged at the right end of the electric joint. The bearing protection device comprises a sliding pushing frame which can be in sliding-pushing fit with the cavity and transverse plates correspondingly mounted at the right end of the sliding pushing frame up and down. A shell is fixedly arranged at the left end of the sliding pushing frame. Guiding grooves matched with the transverse plates are correspondingly formed in the right end wall of the cavity up and down. Locking grooves are correspondingly formed in the upper end wall and the lower end wall of the cavity. An extending first sliding groove is correspondingly formed in the sliding pushing frame up and down. Locking arms matched with the locking grooves are movably mounted on the first sliding groove. The shell is provided with a locking device used for driving the locking arms to be cooperated with the locking grooves. An opening device used for relieving cooperation of the locking arms and the locking grooves is arranged on the shell.