Metric Center Dowel Ejector Punches with XAN DayTAN™ Coating

These metric center dowel ejector punches are used to drive and align ejection in tooling where repeatable positioning is critical. Their center-dowel construction supports stable ejection cycles, helping reduce misalignment effects in high-frequency production.

• Automotive and appliance stamping: In progressive dies, the punch slides against guided cavities; the XAN DayTAN™ coated surface lowers friction and helps maintain dimensional stability across repeated runs.
• Die casting companion tooling: For die casting and related metal forming operations, consistent punch alignment improves ejection reliability when thermal cycling and abrasive contact are present.
• Precision metal forming: When tight ejection control is required, the metric shank formats (D from 10 to 32 mm) enable integration with die sets designed around standardized punch geometry.

This variant is suited to these applications because the combination of center alignment and XAN DayTAN™ wear-reducing coating targets both tool life and predictable motion under load.

The provided product data does not specify the underlying steel grade or heat-treatment condition (e.g., quenched & tempered, nitrided) for this center dowel ejector punch series. Likewise, hardness (HRC) and exact wear/toughness trade-offs are not stated in the specifications given.

What can be stated from the available information is the functional material system: the working surfaces are finished with XAN DayTAN™ coating. This coating is intended to improve wear resistance and reduce friction during repeated punch-to-guide contact, which is especially important in progressive dies and die casting-related tooling.

• Coating role: Enhances surface wear performance under repeated loads.
• Balance: While the coating targets wear and friction reduction, the base steel selection and its hardness/toughness balance still govern overall impact resistance—details not included in the supplied spec.

If you need the exact steel grade and HRC for qualification or quoting, share your target operating loads and we can match the correct material/heat-treatment package.

Select the punch size by matching the shank diameter and length to the die set’s ejector station requirements, then verify the point length and tip geometry for clearance and stripping performance.

• Shank diameter (D): Choose from 10, 13, 16, 20, 25, 32 mm to match the guided bore and bearing surface sizing in the die.
• Overall length (L): Confirm the fixed 71 to 130 mm length fits within the die base stack-up and press stroke travel envelope.
• Point length (L1): Select 19–25 mm or 25–30 mm based on required penetration/engagement for ejection.
• Tip shape: Ensure the specified tip shape (H, J, K, L, N, O, R, V, X, Y, Z) matches the contact geometry of the mating part or ejector interface.
• Other geometry: Verify P (4–16 mm), W (4–10 mm), and the R range (0.2–4.975, 0.2–6.475, 0.2–7.975, 0.2–9.975, 0.2–12.475, 0.2–15.975) against your design drawings.

Tolerance/fit guidance is not provided in the data. In practice, coordinate punch D and guide bore tolerances so the ejector stays centered without binding during thermal expansion and cycling.