Point Larger than Shank Ball Lock Punches Light Duty, Metric

Where it’s used: This ball-lock punch variant fits light-duty metric injection-mold tooling where repeatable retention and consistent ejection are required.

Scenario 1 – Automotive connector housings: For moderate-cycle molds that eject thin ribs, gates, or insert features, the point-larger-than-shank geometry supports positive ball-lock engagement, helping maintain punch alignment during repeated open/close cycles.

Scenario 2 – Medical device housings: When producing parts with tight handling requirements and stable ejection timing, the XNT DayTiN® coated surface helps improve wear life in moderate wear environments, supporting reliable ejection over production runs.

Scenario 3 – Consumer electronics brackets (light duty): In punch-and-die and light-duty die set applications, the metric shank options (D = 13–32 mm) help match common tooling standards, while the fixed point length (L1 = 19–30 mm) supports consistent projection for small feature ejection.

• Designed for light-duty, metric tooling
• Point geometry improves ball-lock retention
• XNT DayTiN® coating targets stable performance under moderate wear

These punches are supplied with an XNT DayTiN® surface coating intended to improve wear resistance for reliable ejection in light-duty conditions. The product metadata does not specify the underlying steel grade, base hardness (HRC), or heat-treatment state, so engineers should confirm the substrate material and hardness from the supplier’s technical drawings for load/wear calculations.

• Coating role: DayTiN-style nitride coating increases surface hardness and reduces wear, which helps maintain ejection repeatability.
• Trade-off: Coatings enhance wear life but do not replace substrate toughness; insufficient core toughness can still lead to chipping under shock loads.
• Material comparison: If you compare alternatives (e.g., different base steels), prioritize substrate toughness for impact resistance, then select coating for wear-dominant tooling.

For dimensioned performance planning, verify substrate hardness and heat treatment (e.g., quenched & tempered vs. nitrided) to ensure the coating is supported by the correct core properties.

To select the correct punch, start by matching the shank diameter and point geometry to your mold’s ball-lock mounting and cavity/core requirements.

• Match diameter D (shank dia.) (mm): Choose from D = 13, 16, 20, 25, 32 to correspond with the standard metric die/punch interface.
• Confirm the point length L1 (mm): L1 is fixed at 19 ～ 30 to set the required projection for the ejecting feature.
• Use overall length L (mm): L is fixed at 80 ～ 100 for compatibility with your holder stack-up and ball-lock engagement length.
• Select geometry by P/W/R ranges: P varies by configuration (e.g., 13.1 ～ 32, 16.1 ～ 38, 20.1 ～ 40, 25.1 ～ 44, 32.1 ～ 50), while W is 1.57 ～ 27.8 and R is 0.2 ～ 16/19/20/22/25. Pick the set that matches your mating recess/profile.

Tolerance & fit: The product metadata provides dimension ranges but not explicit tolerances; confirm fit classes with your ball-lock pocket design to ensure reliable retention without excessive clearance.