System for controllably discharging lubricant from cylindrical cartridge, has extrusion piston having passage opening which is communicated with piston rod, such that lubricant is conducted to outlet through passage opening

摘要

The system has an extrusion piston (2) which is immersed into a cartridge (1), for exerting pressure on the lubricant so as to discharge the lubricant. The extrusion piston has a passage opening (3) communicated with a piston rod (4), through which the lubricant is conducted to an outlet (5).