Extended Range Jector Punches Metric XNT DayTiN® Coating

Extended range jector punches metric are used in injection mold tooling where ejector travel must be maintained across long stroke lengths, such as in automotive interior component molds and appliance housings. In these systems, the punch experiences repeated push cycles and sliding contact within the guide path, so consistent guidance and stable ejection directly affect part release and cycle time.

The XNT DayTiN® coated working surface supports improved wear resistance and reduced friction, helping the punch retain dimensional stability during high-volume production. This variant is also well-suited for precision multi-cavity dies that have tight package layouts: the extended-reach geometry helps the punch keep travel alignment even when the available space for ejector mechanisms is limited.

• Progressive forming and trimming stations that require consistent knockout over longer stroke lengths
• Die layouts with tight tolerances where stable punch travel is critical
• Applications needing durable ejector performance under repeated cycles

The provided specifications for this product focus on geometry and the XNT DayTiN® coating, not on a specific base steel grade. Therefore, the exact bulk hardness (HRC) and heat-treatment condition cannot be stated from the input data alone.

What can be supported is that the XNT DayTiN® coating is engineered to improve wear resistance and reduce friction at the punch surface, which improves process consistency during repeated ejector cycles. In practical die-building, this typically enables longer maintenance intervals by lowering abrasive wear and maintaining smoother guidance in the punch system.

• Coating-dominant durability: surface wear and friction control for stable knockout performance
• Toughness vs. wear: since base steel grade is not specified here, toughness trade-offs should be confirmed with the supplier based on the selected punch core material

Select the jector punch size by matching the required overall stroke coverage and the die layout constraints. Use the fixed dimensions to anchor the design: L1 (point length) = 25–30 mm and L (total length) = 63–100 mm. Choose D (shank diameter) = 40, 45, 50, 56, or 63 mm to fit the ejector guide bore and provide the intended stiffness in the punch system.

Then confirm the geometry-related parameters that must clear or engage with the die cavity/core features. Select the applicable range for P = 20–39.95 mm, W = 8–39.95 mm, and R from the provided options (0.2–19.975, 0.2–22.475, 0.2–24.975, 0.2–27.975, 0.2–31.475 depending on configuration). Also select the tip shape (H, J, K, N, O, R, V, X, Y, Z) to match the knockout geometry.

• Tip shape: match die recess/cavity edge conditions
• Shank diameter D: verify clearance/fit in guide components
• Long die layouts: use the extended length selection within L = 63–100 mm to sustain guidance over travel