Hot-chamber machines, also known as gooseneck machines, rely upon a pool of molten metal to feed the die. At the beginning of the cycle the piston of the machine is retracted, which allows the molten metal to fill the "gooseneck". The pneumatic or hydraulic powered piston then forces this metal out of the gooseneck into the die. The advantages of this system include fast cycle times (approximately 15 cycles a minute) and the convenience of melting the metal in the casting machine. The disadvantages of this system are that high-melting point metals cannot be utilized and aluminium cannot be used because it picks up some of the iron while in the molten pool. Due to this, hot-chamber machines are primarily used with zinc, tin, and lead based alloys.

Because the hot chamber die casting machines are usually used for the zinc/zamak alloy, Pb alloy die castings, they are usually called the zinc die casting machine or zamak die casting machine or Pb die casting machine.

Recently, the zinc alloy parts are very popular in many industries such as the hardwares etc. We have exported the hot chamber die casting machines for the handles, hardwares, furniture parts etc.