Center Dowel Ejector Punches - Metric XVP Coating

Center dowel ejector punches are used in injection mold tooling wherever precise center positioning is required for smooth ejection. They are commonly applied in automotive connector molds, supporting stable alignment between the ejector system and the core while maintaining consistent stroke-to-stroke location under high cycle counts.

In appliance and consumer housing molds, this style of punch helps manage ejector guidance at the core/ejector interface, reducing risk of sticking or uneven wear when parts require repeated ejection from deep cavities.

For electronics enclosures, the variant with a metric shank diameter and XVP surface coating is suited to improve wear resistance on the guidance area, helping preserve dimensional stability over production runs.

• Metric punch construction supports repeatable fit and controlled assembly alignment.
• Improved positioning stability during ejection helps reduce misalignment-related damage.
• XVP coating provides additional surface protection for repetitive cycles.

The provided product data specifies geometry and coating performance, but it does not list the underlying steel grade or a defined heat-treatment condition (e.g., quench & temper, nitriding). Therefore, hardness (HRC) and direct wear/toughness trade-offs cannot be stated from the available information.

What can be supported is the functional role of the XVP coating: it is intended to enhance surface protection at the guidance/contact areas of the ejector punch. This generally helps reduce frictional wear and supports longer service life under repetitive ejection.

• Coating state: XVP coated (surface protection for wear reduction).
• Material/heat treatment: not specified in the provided parameters.
• Selection note: if you have a target hardness or processing requirement, confirm the base steel grade and heat-treatment/finish level for consistency with your mold standard.

Select the center dowel ejector punch by matching the metric shank diameter (D) and overall length (L) to the guide/bushing and ejector assembly requirements in your core/ejector system. The fixed L = 71 ~ 130 mm range should be chosen to ensure the working point reaches the intended ejection depth without bottoming against the carrier or retainer.

Then confirm the locating/guidance features: choose the P dimension (4 ~ 16 mm) and W dimension (4 ~ 10 mm) that align with your dowel hole and support geometry. The tip shape (H, J, K, L, N, O, R, V, X, Y, Z) should be selected to match the engagement style required for smooth centering and controlled seating.

• Point length L1 = 19 ~ 25 or 25 ~ 30 mm controls the penetration/engagement portion.
• Radius dimension R = 0.2 ~ 4.975 up to 0.2 ~ 15.975 should match the relief/contour in the mating pocket.
• Verify tolerance/fit with your dowel hole spec; the series is dimension-variable, but tolerance values are not provided.