Extended Range Punches - Metric XNA Coating

These metric extended-range punches are used in progressive and single-station forming and punching tooling where stable guidance over a longer stroke is critical. The extended length (L ranges from 63 to 100 mm) helps maintain alignment during repeated cutting cycles, reducing risk of edge wandering and uneven wear.

Common application scenarios include:

• Automotive bracket and connector forming: XNA-coated surfaces provide abrasion protection for high-cycle stamping where punch-to-die friction is significant.
• Sheet metal punching in appliance and HVAC fabrication: The extended geometry supports dependable edge conditioning across longer stroke ranges while keeping standard die-set compatibility.
• General industrial part blanking: Metric shank diameters (D = 40, 45, 50, 56, 63 mm) support robust tool guidance in heavier duty tool blocks.

The XNA coating variant is particularly suited when wear resistance and surface protection matter for stable punch performance in extended forming/punching cycles.

Material and heat-treatment specifics are not provided in the supplied data, so selection should be confirmed against the manufacturer’s technical drawing for this series. In general, XNA-type coatings are applied to enhance surface wear resistance and protect the punch body from abrasion during punching and forming.

When engineering these punches, the key trade-off to validate is that higher wear resistance coatings can slightly alter surface friction characteristics, affecting lubrication behavior and die wear patterns. Ensure the coating system is compatible with your press speed, material grade, and lubrication strategy to maintain cutting-edge stability.

• Coating state: XNA coating (as specified) for abrasion resistance and surface protection.
• Hardness (HRC): Not specified in the provided parameters—confirm on the datasheet for expected wear/toughness balance.
• Toughness vs. wear: typically optimized via base steel heat treatment (quench & temper) and finish grinding; verify for your load and shock conditions.

If you’re comparing variants within the same series, select the coating hardness and base hardness that best match your material to be punched and your allowable wear rate.

Correct sizing for extended-range punches starts with matching the punch shank diameter D and overall length to the die setup and guidance requirements. For this series, choose D from 40, 45, 50, 56, or 63 mm.

• Overall length (L): select within 63 to 100 mm to achieve the intended guidance/support length in your upper tool holder and stripper plate system.
• Point length (L1): fixed at 25 to 30 mm, used to set effective penetration/working geometry relative to the die opening.
• Tip shape: choose H, J, K, N, O, R, V, X, or Z based on clearance, part geometry, and chip control needs.

To align with cavity/core requirements, verify the P and W dimensions fall within the available ranges for your chosen configuration (P and W vary by variant), and ensure the R value matches your required corner radius (R ranges from 0.2 up to 31.475 mm depending on the variant).

Where multiple dimensions are adjustable by variant, confirm dimensional fit against your tool drawing (especially around clearance-sensitive interfaces) to avoid interference or excessive side loading; tolerances are not specified in the provided data and must be confirmed from the series documentation.