DAYTON XNAP Coating Center Dowel Punches for Heavy Load (Metric)

Center dowel punches are used in injection mold tooling wherever precise, repeatable center alignment is critical during repeated press or clamp cycles. In heavy-duty punch and die assemblies, these metric punches help maintain stable stack-up location, reducing drift that can affect form accuracy and downstream part features.

• Automotive connector and bracket tooling: Pair with matching components in robust press stations to keep punch centering consistent through high-cycle production; the XNAP coating variant improves surface wear behavior at the locating interface.
• Electronics and appliance housings: Use in sub-assemblies where alignment between upper punch tooling and lower die is essential; the available tip shape options (H, J, K, L, N, O, R, V, X, Y, Z) allow geometry matching to your workholding stack.
• Progressive forming or heavy load cut & blank operations: Select the appropriate shank diameter and point length ranges to maintain guidance during rapid indexing; the fixed body length supports consistent engagement across a range of mold component heights.

The provided product specifications describe a DAYTON XNAP coating center dowel punch, focused on improved wear resistance at the locating surface. While the underlying steel grade and hardness (HRC) are not specified in the available data, the coating is selected to enhance tribological performance under repeated contact and micro-sliding during press cycles.

• XNAP coating: Designed to reduce wear at the dowel/punch guidance interface, helping maintain dimensional stability for long runs.
• Tip geometry: Multiple tip shape options (H, J, K, L, N, O, R, V, X, Y, Z) support fit and guidance depending on the mating component profile.

For applications where higher substrate toughness is required, engineers typically compare base steel toughness vs. wear-focused surface treatments; however, this SKU’s specific heat treatment state and substrate grade are not listed here.

Select dimensions by matching the punch’s engagement features to the mating tooling (guide bush, support plate, or corresponding locating hole/slot). Start with the shank diameter D in the available metric options: 10, 13, 16, 20, 25 mm. Use this to ensure correct clearance/fit and prevent locating play.

• Point length (L1): Choose from 13–19 mm or 19–25 mm to match the required penetration depth for guidance without over-travel.
• Body length (L): This is fixed as a range 80–130 mm; pick the value that aligns with your stack-up height so the working guidance portion is engaged under load.
• Geometry fit: Verify tip shape (H, J, K, L, N, O, R, V, X, Y, Z) and the P and W dimensions (P: 4–18 mm, W: 4–6 mm) so the mating profile matches.
• Radius (R): Select the correct R range (0.2–5, 0.2–6.5, 0.2–8, 0.2–10, 0.2–12.5 mm) to control contact area and reduce stress concentration.

Specify mating tolerances in your drawing notes, as the data provided lists dimensional ranges rather than specific tolerance grades.