Ball Lock Ejector Punches Light Duty XNM Coating X-Shaped Tip

This light-duty ball lock ejector punch is designed for stable retention and repeatable ejection in die sets where ball-lock components must stay engaged through repeated stroke cycles. The X-shaped tip helps improve locating repeatability, supporting predictable part release during high-cadence stamping.

• Progressive/transfer die ejection: Use the ball-lock format to maintain retention through indexing and ejection, reducing mis-trips or inconsistent punch return.
• Automotive and appliance sheet-metal forming: The XNM coating variant is suited when abrasive wear and edge galling are concerns, helping maintain tooling performance across long production runs.
• Precision die tooling alignment: Metric light-duty sizing supports straightforward assembly and consistent alignment in compact die stacks.

The XNM coating and X-shaped tip geometry make this variant particularly appropriate when engineers need dependable ball-lock behavior plus improved positional repeatability at the point of ejection.

This product is specified as a light-duty ball lock ejector punch with an XNM coating. While the exact base steel grade and heat-treat state are not provided in the input data, the technical role of XNM is to improve surface wear resistance for tooling points that experience sliding contact during ejection.

• Wear resistance vs. toughness: Coated punches generally trade slightly reduced surface ductility for improved resistance to abrasion and micro-scoring, which helps reduce wear-driven clearance changes over time.
• Coating purpose: XNM is selected to support stable operation during repetitive ejection cycles where tip wear can impair ball-lock retention and locating accuracy.
• Manufacturing considerations: The X-shaped tip geometry requires controlled finishing to maintain consistent tip-to-ball engagement and prevent uneven coating buildup.

If your project requires a specific hardness target (e.g., measured HRC), request the base material grade and the supplier’s heat-treatment specification for qualification.

Select the punch by matching the shank diameter (D), overall length (L), and point length (L1) to the die block spacing and the required stroke clearance. This variant uses fixed L1 = 19–30 mm and fixed L = 80–100 mm, while other dimensions are available in multiple ranges.

• Match D (shank dia., mm): choose from 13, 16, 20, 25, 32 to fit your guide/retainer bore and maintain alignment.
• Verify P dimension: available ranges are 13.1–32, 16.1–38, 20.1–40, 25.1–44, and 32.1–50; use P to correspond to your required ball-lock engagement geometry and available stack height.
• Check tip geometry: W = 1.57–27.8 mm and R = 0.2–16 / 0.2–19 / 0.2–20 / 0.2–22 / 0.2–25 mm should be selected to avoid interference with cavity/core features.

Account for die machining tolerances and coating thickness by confirming that the chosen point length and tip radii provide clearance throughout the full ejection travel, not just at top dead center.