To surely supply a lubricant by arranging a gas generator at an opening side end part of a casing in which lubricant is stored, and pushing out the lubricant via a lubricant delivery piston with a propulsion gas generated in the gas generator.

A machine connecting part 3 having a conduit 4 for supplying a lubricant is formed at one end of a casing 2 for storing a lubricant stock, and a gas generator 5 generating a propulsion gas is disposed at the other end integrally with lubricant delivery piston 6 on which load is exerted by the propulsion gas. A magazine 12 in which a galvanic gas generation member 13 is mounted is attached inside a magazine receiving part 9 by threaded engagement. Gas generation solution is stored inside a space between a bottom 8 and a cover cap 10. Gas is generated by bringing the gas generation solution into contact with the gas generation member 13, and the piston 6 is pressed down inside the casing 2 by a gas pressure, whereby the lubricant is delivered from the conduit 4 for supplying.