Metric Ball Lock Ejector Punches Heavy Duty XNAP Coating

These metric ball lock ejector punches are used in injection-mold tooling only when the “ejection-and-retention” concept is applied to stamping/progressive die systems—most commonly metal forming lines and progressive dies that require stable, repeatable punch positioning under load.

• Automotive connector and bracket forming dies: The ball-lock geometry helps maintain secure retention during high-cycle ejection, improving stability versus straight shank ejectors when parts rebound or vary slightly in material thickness.
• Medical device housing forming: The point-larger-than-shank contact provides consistent forming interaction at the working interface, supporting predictable cavity/core-like output from the press tooling.
• Heavy-duty stamping for formed metal components: Use the heavy-duty variant with the XNAP coating to target wear resistance at the ejecting contact zone, reducing drift over production runs.

Select the appropriate tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match the forming feature profile and alignment requirements of the die set.

The product is specified as having a heavy-duty XNAP coating, which is intended to improve wear resistance at the ejecting point where sliding and contact stresses are highest. While the input data does not provide a steel grade or measured hardness (HRC), coating selection here is the primary performance lever for durability in high-cycle metal forming.

• Coating function: XNAP helps resist abrasive wear and reduces tooling surface degradation during repeated ejection cycles.
• Heat treatment: Not specified in the provided metadata; therefore, tempering/hardening state cannot be confirmed from the supplied information.
• Trade-off: In general, harder wear-resistant coatings can improve life but still rely on proper base-shape rigidity to avoid chipping; choose geometry (tip shape and ball-lock retention) to balance toughness and wear behavior.

If multiple base materials are offered for your program, confirm the steel grade and HRC to ensure compatibility with your die-set contact pressures; the current data only guarantees the presence of XNAP for wear performance.

Correct sizing starts with matching the ejector working interface and overall stick-out to your die cavity/core requirement. Use the shank diameter D (13, 16, 20, 25, 32, 40 mm) to ensure proper guidance in the die components and to fit the corresponding die bushing/guide bore.

• Length match: The L (80–100 mm) controls total ejector reach; verify it clears tie-bar/brackets and provides the required stroke allowance for your press sequence.
• Point length: Keep L1 (19–30 mm) consistent with the working engagement depth into the formed feature.
• Ball/punch geometry controls: Select the correct P and W for your specific variant range (P: 13.1–32 / 16.1–38 / 20.1–40 / 25.1–44 / 32.1–50 / 40.1–56; W: 1.57–34.73) and choose R (0.2–16 up to 0.2–28) to reflect your tip/radius profile needs.

Tolerance and fit are not specified in the input data; confirm your die guide bore and ball-lock seating clearances with the supplier drawing before production, especially when swapping tip shapes (H, J, K, L, N, O, R, V, X, Y, Z).