Metric Center Dowel Regular Punches

These metric center dowel punches are used in die ejector assemblies where repeatable part-to-die alignment is critical. In high-cycle press tooling, the punch provides consistent centering for the ejector system, helping maintain stable die alignment across successive open/close cycles.

In automotive and appliance die sets, the regular dowel punch geometry supports accurate positioning of ejector components, reducing the risk of misalignment that can lead to uneven wear. The DAYTON XNAD coating is selected to improve surface durability and wear behavior under sliding contact.

For stamping and forming transfer tools that use multiple cavity stations, different tip forms (H, J, K, L, N, O, R, V, X, Y, Z) allow engineers to match fit-up to their bushing and mating hole profiles. The available shank diameter range (10–32 mm) and point lengths (19–25 mm, 25–30 mm) help tailor the assembly for the required penetration depth.

The input data specifies the tool variant features and coating (DAYTON XNAD) but does not provide an explicit steel grade or heat treatment chart. For proper material selection, confirm the base steel and hardness rating on the datasheet associated with series code 250301826569.

What is supported here is the functional performance goal: the XNAD coating is applied to improve wear resistance and surface durability, which typically increases tool life in environments with frequent contact and micro-sliding.

• Wear resistance vs. toughness: coated tool steels are commonly chosen to maximize abrasive/scuff wear performance while maintaining sufficient core toughness for punch retention and shock resistance.
• Heat treatment state: not specified in the provided parameters—request confirmation of tempering/nitriding condition if your application involves high temperature or long dwell cycles.

If multiple material/coating options are offered for the same geometry, compare based on expected sliding distance, contact pressure, and the hardness required to resist wear at the working tip.

Select dimensions by matching the shank and point geometry to the mating die components (bushings, locating holes, and ejector alignment features). Start with D (shank dia.): choose 10, 13, 16, 20, 25, or 32 mm to fit the specified dowel hole diameter in your die/ejector plate stack.

Next, set the working penetration using L1 (point length): options are 19–25 mm or 25–30 mm. Ensure L1 achieves the desired centering engagement without bottoming, based on your cavity/core separation and ejector travel range.

The overall L (length) is fixed as 71–150 mm depending on the chosen configuration. Also confirm tip-form compatibility using the specified Tip shape (H, J, K, L, N, O, R, V, X, Y, Z) and verify the fine geometry parameters P (4–16 mm), W (4–10 mm), and R (multiple ranges: 0.2–4.975, 0.2–6.475, 0.2–7.975, 0.2–9.975, 0.2–12.475, 0.2–15.975).

• Tolerance/fit: use the die-side hole tolerance and press-fit or clearance design standard your project specifies for dowels.
• Configurable vs fixed: tip shape and D/L1/P/W/R are variable per configuration; L (overall) is provided as a range (71–150 mm).