Bearing removal tool

A bearing removal tool, comprising:

• a body, having a linear chamber and a gas intake passage therein, the chamber having a front section communicating with a front end of the body and a rear section opposite to the front section, a gas guide valve being disposed in the rear section, the gas intake passage having two ends respectively communicating with the front section and the gas guide valve, the gas guide valve being configured for switching a high-pressure gas to be input from the rear section or from the front section via the gas intake passage, the front end of the body having a blocking portion extending in an axial direction of the chamber, the blocking portion having a rear blocking surface facing the front section and a front blocking surface opposite to the rear blocking surface;
• a striking block, slidably disposed in the chamber, wherein when the high-pressure gas is input from the front section, the striking block is driven to slide toward the rear section, wherein when the high-pressure gas is input from the rear section, the striking block is driven to slide toward the front section, the striking block having a receiving portion extending axially, a first pushing portion being formed on a rear side of the striking block, facing the rear section;
• an actuating shaft, having a driving end received in the receiving portion and a working end extending out of the front end of the body, a second pushing portion being formed on the driving end, the second pushing portion interacting with the first pushing portion, enabling the actuating shaft to slide toward the front section or the rear section along with the striking block, wherein when the high-pressure gas is input from the front section to drive the striking block to slide toward the rear section, the first pushing portion of the striking block strikes the second pushing portion of the actuating shaft for driving the actuating shaft to slide toward the rear section, a first blocking member and a second blocking member being fixed on the actuating shaft, the first blocking member and the second blocking member being spaced apart, the first blocking member being located in the front section, a distance between the first blocking member and the second pushing portion being defined as a movement distance for the striking block to slide relative to the actuating shaft, the second blocking member being fixed on the working end, a distance between the second blocking member and the first blocking member being greater than an axial length of the blocking portion, wherein when the actuating shaft is moved toward the front section, the actuating shaft drives the first blocking member to lean against the rear blocking surface, wherein when the actuating shaft is moved toward the rear section, the actuating shaft drives the second blocking member to lean against the front blocking surface.