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

Ball lock ejector punches are used inside injection and die tooling to drive precise part ejection while maintaining stable guidance between cycles. In automotive connector and electrical housing molds, the heavy-duty ball-lock retention helps keep the punch seated under repeated actuator loads, improving contact reliability when ejecting flat or shallow features.

• Multi-cavity and high-cycle housings: XNA coating supports reduced wear at the punch-to-wall interface for longer service intervals.
• Stamping/forming dies: Tip shapes (H, J, K, L, N, O, R, V, X, Y, Z) allow engineers to match ejection profiles to varying part geometries.
• Die and mold assemblies using metric standards: Metric dimensions (D 10–40 mm) simplify integration with common tooling layouts.

These heavy-duty metric ball-lock punches are available in M2 and PS4 materials. M2 is a high-speed steel option chosen for strong wear resistance in high-contact ejection zones, balancing toughness for recurring die and mold cycles. PS4 provides an alternative steel selection when performance targets emphasize durability under repeated use.

• Coating: XNA for reduced wear and improved surface life during sliding contact.
• Heat treatment state: The provided data does not specify hardness (HRC), quench & temper, or nitriding parameters; consult the material datasheet for final HRC and treatment cycle.
• Trade-offs: Higher wear resistance steels typically demand careful selection to maintain sufficient toughness; match material choice to your load, dwell time, and expected cavity friction.

Select the punch by matching its shank diameter D (10–40 mm) and overall length L to the die block thickness and required travel path. Choose the point length L1 from the available ranges (10–19 mm, 13–25 mm, or 19–30 mm depending on configuration) to control how far the ejector tip penetrates during ejection.

• Fit to tooling: Use D to align with the prepared bore in the ejector plate/guidance components; ensure your bushing or retainer system is compatible with the selected D range.
• Tip profile matching: Select the tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match the part’s ejection contact area and reduce risk of surface marking.
• Geometry details: Confirm P (1.5–12 mm) and W (1.5–14 mm) against the clearance envelope in the mold cavity region.
• Tolerance considerations: The provided data does not list dimensional tolerances; validate clearance and retention requirements during D-to-bore design.