Adjustable micro-flow pneumatic plunger oil pump

The utility model provides an adjustable micro-flow pneumatic plunger oil pump, which relates to the technical field of pneumatic plunger oil pumps and comprises a device body, an oil storage cavity is arranged inside the device body, an oil supply piston is slidably connected inside the oil storage cavity, an oil supply indicating rod piston is arranged on one side of the oil supply piston, and an oil supply indicating rod is arranged on the other side of the oil supply indicating rod piston. Compressed air is adopted as a power source, the micro-flow pneumatic plunger pump is controlled by an automatic system to act to supply oil, the oil is mixed with the compressed air to form oil-gas two-phase medium flow, and the oil-gas two-phase medium flow is conveyed into a high-speed bearing cavity. And an oil film is formed on the surface of the rolling body to provide stable and reliable lubrication, so that the problems that the lubricating oil amount of each lubricating point cannot be adjusted, the oil supply