DIN Standard D2 Steel Ball Lock Ejector Punches - Light Load Wrench Flat

These DIN-standard D2 steel ball lock ejector punches are used to provide controlled, repeatable blank ejection in injection mold and die assemblies where positioning consistency is critical. The wrench-flat head enables positive handling during installation, helping reduce variation in punch orientation across press cycles.

• Automotive and electronics connector molds: In multi-cavity tooling for stamped inserts or molded housings, the ball-lock function supports reliable part release while the light-load configuration suits lower ejection forces typical of thin-wall components and controlled ejection events.
• Consumer and appliance housing molds: For ejection of plastic housings or appliance parts with modest adhesion, the wear-resistant D2 construction and factory-ground critical surfaces help maintain ejector fit and stability over production runs.
• Die and mold assembly station alignment: The wrench-flat geometry improves tooling ergonomics and installation accuracy, which supports consistent punch location inside die cavities and the mating ball-lock system.

This variant uses D2 tool steel, selected for its wear resistance when ejector components experience repeated contact under ejection and return cycles. D2 is commonly treated in the quenched and tempered range to balance hardness with sufficient toughness for tool service.

• Hardness & performance: Typical D2 applications target high hardness (often around the mid-50s to low-60s HRC) to resist edge wear and maintain punch geometry.
• Heat treatment approach: Quenched & tempered treatment provides strength while limiting excessive brittleness that can occur with over-hardening.
• Trade-off: Higher hardness improves wear life, but reduced toughness can increase risk of chipping if alignment is poor or shock loads occur.

If compared to tougher but softer grades, D2 prioritizes abrasive and wear resistance, making it well suited for long-running die and mold ejector surfaces where dimensional stability matters.

Correct dimension matching is essential to ensure stable ball-lock engagement and consistent ejector fit. Select the punch based on the shank diameter (D) from the available options 10, 13, 16, 20, 25, or 32 mm, then confirm the overall geometry using L and LC ranges.

• Length matching: Use L values of 71–90 mm or 63–90 mm, depending on the configuration, and verify LC (full length alteration) in the available ranges 47–89.9 mm or 46–89.9 mm.
• Tip geometry: Choose tip P (3–22 mm), tip width W (ranges such as 3–9.9, 6–12.9, up to 6–31.9 mm), and corner radius R (0.15–15.95 mm depending on variant).
• Tolerance & fit: Factory-ground critical surfaces are intended to maintain consistent ejector fit in the die cavity; ensure your ball-lock mating features match the chosen tip alterations (PC, WC) so engagement depth and clearance remain within your assembly requirements.