An out-of-balance runner will soon destroy it's bearings and support structures, as well as being noisy.

Non-balance runner distributing form is used in casting system, on the precondition of ensuring plastic parts quality, the cavity layout is simple, and the length of sub-runner gets shortened as well.

Make sure that vermin can't get access into the runner compartment where they could throw the rotating machinery temporarily out of balance and thereby create destructive chaos.