WCB portable gear pump is a low-pressure, miniature portable oil transfer pump specifically designed for conveying non-corrosive lubricants or similar media free of solid particles and fibers. It is suitable for fuel transfer systems, fuel systems, hydraulic transmission systems, and meets the transfer requirements of industries such as power plants, substations, refineries, and machine tools. To effectively extend its service life and enhance efficiency, it is constructed from alloy steel with special heat treatment, achieving a surface hardness exceeding HRB60, thereby ensuring 7,000 hours of continuous, trouble-free operation.