Plunger lubricating couplerIt is a device used for the automatic lubricating of the injection punch of die casting machine. When the die casting machine gives a signal, the device performs the work automatically to lubricate the injection punch.Parameter (1) Power supply voltage DC24V (2) Air pressure 0.2-0.4MPa. (3) Spray quantity at one dripping stroke 0-5cc which is adjustable. (4) Used medium non-Graphite lube with the viscosity less than 2000cps