Center Dowel Regular Punches - Metric, XCDP Coating

Center dowel regular punches are used in injection molding and precision transfer tooling to establish repeatable part location between the moving punch side and the stationary die cavity. In automotive connector and sensor housing molds, the dowel-hole interfaces help maintain consistent alignment at high cycle rates, reducing risk of mismatch features during ejection and closing.

The XCDP coating variant is well-suited for long-run production because it is designed to improve surface wear performance and help control friction at the locating surfaces. This helps support stable fit under repeated mechanical engagement, which is especially valuable for tight-tolerance multicavity molds.

• Automotive connector molds: stable positioning to protect fine pin/terminal geometry during high-volume molding.
• Medical device housings: consistent registration for thin-wall alignment, where small shifts can affect sealing surfaces.
• Electronics enclosures: reduced locating wear to help maintain long-term dimensional repeatability.

Selecting the appropriate tip geometry (X, R, K, O, H, L, J, N, V, Y, Z) allows engineers to tune locating behavior for different cavity/core topographies and assembly clearances.

The provided metadata specifies the coating family (XCDP) but does not list the underlying steel grade or numeric hardness. For this reason, only general, specification-supported guidance is included here.

XCDP coating is used to improve wear resistance at the locating interface, where repeated contact can lead to fretting, galling, and gradual fit drift. In dowel applications, this typically means better surface durability and lower frictional tendency during repeated opening/closing cycles.

• Wear resistance: improved at high contact frequency to help preserve locating accuracy.
• Toughness trade-off: coatings generally add surface protection, while base-steel toughness must still support shock loads during actuation; confirm base material specifications for high-impact tooling.
• Heat treatment state: not specified in the input; verify the punch substrate and treatment (e.g., quenched & tempered, nitrided) from the manufacturer datasheet for full performance confirmation.

If multiple material options are offered for the series, compare them by substrate hardness and treatment method, then validate that the selected coating is compatible with the intended wear and cleaning process.

Correct selection starts by matching the dowel punch to the mold’s dowel-hole diameter and the available installation envelope. Use the provided D (shank dia.) options of 10, 13, 16, 20, 25, or 32 mm to match the corresponding dowel-hole size in your plate or block.

• Overall length (L): fixed at 71–150 mm, choose a length that fits through the punch-side component without bottoming or interfering with surrounding hardware.
• Point length (L1): select from 19–25 mm or 25–30 mm to suit how deep the locating point must engage for stable registration.
• Point dimensions (P, W): P ranges 4–16 mm and W ranges 4–10 mm; these should match the geometry of the mating locating pocket/feature.
• Radius (R): available ranges include 0.2–4.975, 0.2–6.475, 0.2–7.975, 0.2–9.975, 0.2–12.475, and 0.2–15.975 mm—pick the radius that best matches the counter-feature curvature to avoid point stress concentrations.

Finally, select the tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to tune locating behavior. For fit, ensure the dowel-hole diameter and any guidance pocket dimensions maintain the intended clearance/interference for alignment without binding; confirm tolerances from your mold build drawing because tolerance data is not included in the provided specifications.