Choosing an injection molding machine requires matching clamp force, shot size, injection capability, mold fit, temperature control, repeatability, and automation to the part and process. Tonnage alone does not prove that a machine can make a stable part.
Check the machine-to-mold fit
- Confirm clamp force from projected cavity and runner area and the expected cavity pressure.
- Check mold height, daylight, tie-bar spacing, platen size, locating ring, ejector stroke, and core-pull interfaces.
- Compare shot size, screw diameter, injection rate, pressure, recovery time, and residence time with the resin and part.
Match control to quality risk
- Review barrel and mold-temperature control, pressure and speed resolution, cushion stability, sensors, and calibration.
- For precision or optical parts, consider repeatability, data capture, cavity pressure monitoring, and environmental control.
- For TPU or other sensitive materials, confirm screw geometry, purging, drying, low-shear handling, and residence-time limits.
Validate the real setup
Use the actual mold, resin, cavity count, cycle, and acceptance criteria in the machine selection. A machine that is much too large can create poor shot utilization and residence-time risk; one that is too small can limit pressure, clamp capacity, or process stability.
Plan the next step
Share your part, resin, annual volume, critical dimensions, finish, and timing with the Cavity Mold team through our contact page. We can review the manufacturing risks and recommend a practical next step.
Related Cavity Mold resources
- Injection mold engineering services
- Plastic injection molding services
- Injection mold making services
- Contact Cavity Mold