Cumsa PZ releases small undercuts in molds

The sprung core technology combines key features of previous models.
July 16, 2026
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Cumsa's sprung core technology for small undercuts was introduced in 1995 with the PP (left). The newest version is the PZ (right).

Cumsa's sprung core technology for small undercuts was introduced in 1995 with the PP (left). The newest version is the PZ (right).

PZ The newest iteration of Cumsa’s sprung core technology for releasing small undercuts in injection molds, first developed in 1995, combines key features of the preceding PX and PW models. It has a mechanical head regulation system, and g6 tolerance for easy installation and reduced machining requirements. The PZ is compatible with the AP Retractable Core Extension for larger applications.

What’s new? The PZ series, available in multiple widths and diameters.

Benefits Greater efficiency, versatility and cost-effectiveness.

Cumsa USA LLC, Troy, Mich., 248-850-8385, www.cumsa.com