Ball Lock Ejector Punches - Heavy Duty, Metric, XNAD Coating

These heavy-duty metric ball-lock ejector punches are designed for injection die sets where the ejector must stay precisely located during repeated stripping cycles. The ball-lock retention system helps maintain controlled positioning, reducing ejection variability and helping protect die surfaces from inconsistent contact.

• Progressive and transfer die assemblies: use when high cycle stability is required for staged extraction of formed parts; the larger point contact improves stripping consistency, especially in longer runs.
• Automotive and industrial connector components: suited to housings and terminals that require repeatable ejection from tight die pockets; metric sizing supports standardized part geometry.
• General die assemblies with controlled stripping requirements: apply where repeatability matters more than maximum free movement, leveraging the XNAD coating for wear-focused operation.

Choose the appropriate shank diameter and point length to match die cavity/core engagement depth while maintaining the ball-lock point’s controlled contact during ejection.

The provided configuration specifies an XNAD coating intended to enhance wear resistance for long production runs where ejector punches experience sliding and contact pressure during stripping.

• Wear resistance vs. toughness: coatings like XNAD typically improve surface durability, which can extend service life; however, the underlying steel’s toughness still governs resistance to chipping under shock loading from misaligned ejection.
• Heat treatment state: the input data does not specify a steel grade or heat-treatment condition (e.g., quench & temper, nitriding). Verify the substrate specification with your Axiom Molds engineering team when selecting for severe impact or corrosion environments.

When comparing alternatives, prioritize the coating + base steel combination that best matches your stripping force profile and die contact conditions, since wear-focused coatings can shift failure modes toward edge/contact fatigue if alignment control is poor.

Select ball-lock ejector dimensions by matching the punch’s engagement geometry to the die’s required stripping travel and point contact length. In this series, the L (overall length) is fixed at 80–100 mm, while L1 (point length) is fixed at 19–30 mm; these values must accommodate your die thickness and guide stack arrangement.

• Shank diameter (D): choose 13, 16, 20, 25, 32, or 40 mm to fit the ejector guide/locating bore in your die assembly.
• Point shape: select the required tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match part ejection contact area and avoid overstressing fragile features.
• Interface geometry: use the available P range (13.1–32, 16.1–38, 20.1–40, 25.1–44, 32.1–50, 40.1–56 mm) and W range (1.57–34.73 mm) to align with your die’s cavity/core and clearance constraints.
• Radius (R): select 0.2–16 up to 0.2–28 mm depending on the chosen configuration to control contact stress distribution.

Tolerance/fit: ball-lock systems rely on repeatable retention and positioning; confirm clearance and stop surfaces for the selected D and P dimensions to prevent chatter or misalignment during ejection.