Contents
Function:
- sprue bushing must be adapted to the machine nozzle used
- exact coupling must be ensured
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nozzle mouth almost always has to be smaller than the diameter of the sprue bushing
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due to high forces of the nozzle contact sprue bushings are therefore made from hardened steel
Risk:
- wear of sprue bushing
- leakage causes pressure drop and causes filling problems
Design:
