Injection molding ยท Injection unit
Injection Unit Utilization Calculator
Compare a planned shot volume with a documented usable injection-unit volume. Use this as a documented planning estimate, then validate it against the actual machine, mold, resin, and process.
Formula and method
Utilization = planned shot volume / usable injection volume x 100.
Use actual shot volume and the machine maker volume definition; retain the resin and temperature basis.
Inputs and units
Use controlled records, CAD, measured production data, the exact resin data sheet, or machine-maker specifications. Keep the material and time basis with the result.
Worked example
180 cm3 / 240 cm3 = 75%.
What the result supports
This result is a first-pass screen for injection unit planning. Use it to identify the next record or engineering check, not as a release decision.
Sanity check
Check the unit basis and whether all quantities describe the same cavity, shot, machine, or production window before comparing values.
Important limitation
A percentage is a screening value, not a machine-selection approval.
Reference: ENGEL: machine data example.
Next calculation
FAQ
What must be checked after using injection unit utilization calculator?
Retain the input source and compare this estimate with the applicable machine, mold, supplier, or production record before relying on it.