Metric Center Dowel Ejector Punches XCD Coating

Metric center dowel ejector punches are used in injection mold tool sets where reliable ejection and tight alignment are critical. The integrated center dowel hole geometry helps transfer guide loads consistently, reducing misalignment during punch stroke and improving repeatability in progressive and transfer tooling.

• Automotive and appliance housings: ideal for ejection stages that must maintain position across high cycle counts; the XCD coating variant supports smoother, more stable punch sliding behavior.
• Precision connector and insert molds: suited when guide load transfer through the center dowel helps keep punch-to-die alignment consistent for uniform part release.
• Medical device component tooling: beneficial where repeatable ejector performance reduces the risk of partial ejection and downstream defects.

Choose the specific tip shape and shank diameter options to match the mold’s ejector layout while leveraging the XCD coating for improved surface performance under production wear conditions.

The provided configuration specifies the XCD coating for the center dowel ejector punch surface, aimed at smoother operation and better wear behavior during repeated ejection. However, the input data does not list a specific steel grade, hardness (HRC), or a defined heat treatment state (e.g., quenched & tempered, nitrided), so those material properties cannot be stated from the current information.

• Coating effect: XCD is selected to enhance surface performance for wear resistance in production cycles, which typically reduces friction-related stick-slip during punch travel.
• Trade-off: coatings improve sliding/wear behavior, but dimensional stability and coating thickness limits must be considered when matching tight ejector clearances and tolerances.

If you need the exact base steel (e.g., H13-equivalent) and target hardness for cycle-life modeling, request the material/heat-treatment datasheet for series 250301826424.

Select this center dowel ejector punch by matching the mold’s ejector requirements to the available metric dimensions in the specification.

• Shank diameter (D): choose from 10, 13, 16, 20, 25, 32 mm based on the guide pin/ejector bore sizing in the die set.
• Total length (L): select within the fixed range 71–130 mm to ensure full stroke coverage without bottoming in the stack.
• Point length (L1): match the required engagement depth using 19–25 mm or 25–30 mm, depending on part geometry and ejector contact area.
• Geometry controls: choose tip shape (H, J, K, L, N, O, R, V, X, Y, Z) and confirm the P and W features fall within P = 4–16 mm, W = 4–10 mm.
• Radial feature (R): select the appropriate R range based on the required clearance/contour: 0.2–4.975, 0.2–6.475, 0.2–7.975, 0.2–9.975, 0.2–12.475, or 0.2–15.975.

For fit, verify that your ejector bore and center-dowel locating interfaces accommodate the selected geometry while maintaining working clearance for smooth travel, especially with the XCD-coated surface.