Extended Range Ejector Punches Metric XVP Coating

Where it fits in: These metric extended ejector punches are used in injection molding and related tooling that requires stable part ejection from deeper cavities, such as core-side access designs and long-stroke ejection systems.

Scenario 1 — Automotive connector housings: In multi-cavity automotive connector molds, the extended length helps transmit ejection force to recessed gates and deep ribs without compromising punch alignment. The XVP coating supports smooth slide/return behavior and improved wear performance over high-cycle production.

Scenario 2 — Consumer electronics housings: For thin-wall housings with local undercuts, the selectable tip shapes (H/J/K/N/O/R/V/X/Y/Z) allow engineers to match the contact geometry to the part without damaging functional surfaces. The extended punch profile helps maintain dimensional consistency during repeated tool cycling.

Scenario 3 — Die casting or punching press tooling: When used as ejector/punch components in demanding press environments, the coating reduces friction and helps manage surface wear, improving tool return reliability and maintaining stable ejection over time.

• Extended geometry reaches deeper cavity features
• XVP coating improves wear resistance and reduces friction
• Metric dimensions support repeatable assembly and alignment

The provided specifications describe the extended geometry and XVP coating, but no explicit base steel grade, hardness, or heat-treatment state is listed in the input data. Because of that, material-property claims such as exact HRC, specific wear coefficients, or “quenched & tempered to X” cannot be stated reliably here.

What can be qualified from the given info:

• XVP coating: intended to enhance surface wear resistance and reduce friction during punch/ejection cycling.
• Wear vs. toughness trade-off: surface-coating solutions typically improve tribology and reduce galling risk while relying on the underlying steel’s toughness for impact and bending resistance; selecting a suitable punch steel grade is still required for specific press loads.
• Heat treatment: the input does not specify pre-hardened, quenched & tempered, or nitrided condition, so the exact treatment should be confirmed from the supplier’s material certification for the same series.

If you share the base material/heat-treat documentation for series 250301827739, this section can be completed with the exact steel grade and target hardness.

Step 1: Match reach — Select the overall length L = 63 ～ 100 mm so the punch tip can fully cover the deepest ejector contact point in your cavity/core stack-up. For the tip engagement zone, use the fixed point length L1 = 25 ～ 30 mm to ensure adequate contact while avoiding excessive protrusion.

Step 2: Select shank diameter — Choose D (shank dia.) = 40, 45, 50, 56, or 63 mm to fit your guide/bushing and maintain alignment. Larger D generally improves bending stiffness, which can matter in deep-cavity ejection.

Step 3: Choose contact geometry — Pick the required tip shape (H/J/K/N/O/R/V/X/Y/Z) and then match the P/W/R dimensions to your mating die insert geometry. The available ranges are P = 20 ～ 39.95, 25 ～ 44.95, 30 ～ 49.95, 35 ～ 55.95, 40 ～ 62.95; W = 8 ～ 39.95, 9 ～ 44.95, 10 ～ 49.95, 11 ～ 55.95, 12 ～ 62.95; and R = 0.2 ～ 19.975, 0.2 ～ 22.475, 0.2 ～ 24.975, 0.2 ～ 27.975, 0.2 ～ 31.475.

• Confirm clearance/fit against your guide bore and expected ejection stroke.
• Because tolerances are not provided in the input data, verify final fit using your engineering drawings and the supplier’s dimensional tolerances for this series.
• Tip shape and geometry are effectively configurable via the listed variable dimensions; L1 is fixed within 25 ～ 30 mm.