Metric Center Dowel Ejector Punches (XCN Coating)

These metric center dowel ejector punches are used inside injection and die tooling to create a repeatable locating feature while also transferring ejection force. The center locating tip helps stabilize shutoff alignment, which is especially valuable when ejector systems must stay synchronized across long production runs.

Common applications include automotive connector and housing molds, where the tooling must maintain positional accuracy for multiple ejector elements and prevent wear-induced drift. The XCN coating provides surface protection that supports consistent performance under frequent cycling.

They are also suited for appliance and power-tool components with center-gated layouts, where precise alignment improves ejection repeatability and part quality. For die makers working with metric die standards, the selectable shank diameter (D) and point length (L1) allow the punch to match existing core/ejector geometry without extensive redesign.

The provided specifications confirm an XCN-coated center dowel ejector punch, but they do not specify the base steel grade or the exact heat-treatment condition in this dataset. As a result, hardness (HRC), specific wear/toughness trade-offs, and any quench-and-temper or nitriding parameters cannot be stated from the supplied information.

What can be validated for engineering selection is the coating function: the XCN surface protection is intended to resist wear at the tip and locating zones, helping maintain dimensional stability over repeated cycles. This typically improves tool life in abrasive or high-cycle environments while preserving the role of the controlled tip geometry for alignment.

• XCN coating: wear-resistance and cycle-stability benefits at the contacting surfaces.
• Material/heat treatment: not specified in the supplied data—confirm with the manufacturer datasheet for hardness (HRC) and base steel grade.

Select the dowel ejector punch dimensions to match the mating geometry and the available ejector/punch space in the mold assembly. Use the shank diameter D (10, 13, 16, 20, 25, 32 mm) to choose the closest bore or pocket size in the fixed and moving components.

Next, match the point length L1 (19–25 mm or 25–30 mm) to the required engagement depth for stable positioning. Confirm overall L (71–130 mm) so the punch length provides correct stand-off and ejection travel clearance without interference.

• Tip shape: choose from H, J, K, L, N, O, R, V, X, Y, Z to align with your cavity/core contact profile.
• P, W, R: set P (4–16 mm), W (4–10 mm), and R (0.2–15.975 mm depending on range) to reproduce the intended tip curvature and edge geometry.
• Tolerance/fit: verify clearance to your mating dowel hole/pocket; the dataset does not provide tolerance values, so use your mold shop’s standard fit practices and confirm with supplier documentation.