The KM-92 series of reaming machines is a portable model launched by our company, designed for field operations or frequent maintenance scenarios. It is compact and portable, powered by a manual hydraulic pump and requires no electricity, featuring mechanical return to reduce the labor intensity for operators. The head of the machine is equipped with a two-speed conversion design, which enhances the equipment's reaming and expansion capacity, as well as throughput. A quick discharge valve has been added to the hydraulic circuit, shortening the return time. With its small size, light weight, and ease of movement, this machine is ideal for on-site maintenance and field operations.