Metric Extended Range Punches XNAP Coating

These metric extended range punches with an XNAP coating are used in injection and forming tooling where the punch must travel deeper into a workpiece while maintaining stable alignment under repeated cycles. A common scenario is progressive and compound die stations for metal forming, where consistent punch guidance reduces chatter and helps keep forming quality uniform across long stroke lengths.

They also fit automotive component production dies that require smooth, reliable cutting action during high-volume runs. The extended range geometry (with a fixed point length and overall punch length range) supports deeper reach and helps maintain cycle stability as loads fluctuate.

For appliance and industrial housing forming operations, selecting an appropriate tip shape improves material flow and edge interaction. The XNAP coating is suited for these applications because it enhances wear resistance and supports smoother operation, extending punch life in abrasive or highly repetitive processes.

• Deep-stroke forming in metric progressive die stations
• Long run production where guidance stability matters
• Tip shape selection to match forming and cutting conditions

Material details and steel grade are not provided in the supplied specifications, so coating-focused characteristics are emphasized. The XNAP coating is specified for smoother cutting action and longer wear life, supporting stable performance during extended stroke forming.

For die makers, this typically translates to improved resistance to coating wear and edge degradation under repeated contact, which can reduce maintenance frequency and help maintain dimensional stability over time.

• Wear resistance: enhanced by the XNAP coating for longer punch service intervals
• Toughness trade-off: as with many hard coatings, wear resistance is prioritized; edge protection and proper alignment remain important for preventing premature chipping
• Heat treatment: not specified in the provided data; confirm the punch base material temper/hardness with the manufacturer for exact HRC comparison

If multiple base materials or coating variants are available, select based on the combination of required hardness (HRC), impact toughness, and abrasive conditions—then verify that heat treatment state matches your press load and cycle rate.

To size these metric extended range punches, start with the shank diameter D selection from 40, 45, 50, 56, 63 mm so the punch fits your guide system and maintains rigidity under load. Choose the overall length L within 63 to 100 mm to match your press stroke stack-up and die clearance without bottoming.

Next, set the forming reach using the fixed point length L1 = 25 to 30 mm. This is the effective tip engagement zone, so it should correspond to the cavity/core depth and the die designer’s required material penetration.

Fine geometry is selected via the variable parameters:

• P dimension: 20–39.95 / 25–44.95 / 30–49.95 / 35–55.95 / 40–62.95 mm
• W dimension: 8–39.95 / 9–44.95 / 10–49.95 / 11–55.95 / 12–62.95 mm
• R dimension: 0.2–19.975 / 0.2–22.475 / 0.2–24.975 / 0.2–27.975 / 0.2–31.475 mm

Where mating features exist (punch holder bore, guide bushing, and die openings), ensure your guiding fit and clearances are consistent with your standard tolerance practice. Tip shape (H, J, K, N, O, R, V, X, Y, Z) should be matched to the forming/cutting profile your cavity requires.