Today's KNOWLEDGE Share
Most machines are oversized and no one wants to admit it.
Oversizing a machine feels like the safe move. “Just in case.” A little extra clamp force, a bigger screw, more stroke. But the reality is, oversizing costs more than most people think.
An oversized clamp unit slows dry cycle.
An oversized injection unit introduces melt instability.
An oversized screw increases residence time and shear.
And oversized machines take up more floor space, consume more energy, and often underperform at startup.
Why does it happen? Because it's easy. It gives the illusion of flexibility. But in practice, it reduces process control and increases long-term cost per part.
If you're running a part that only needs 80 tons of clamp force and you're using a 150-ton machine, you're likely sacrificing efficiency on every cycle, even if the parts are technically OK.
Right-sizing isn’t about cutting corners. It’s about matching the machine to the real needs of the mold and the process. If you’re planning new production, it might be time to take a second look at whether your machine specs are built around the process or just the habit.
source : Roman Malisek
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