Metric Center Dowel Punches for Heavy Load

This metric center dowel punch is used in injection and press tooling where repeat positioning and heavy-duty guidance are critical. Automotive connector and bracket molds often require tight die-to-core alignment across long production runs; the stable center-point geometry helps maintain consistent locating during opening/closing and reduces stack-up effects from repeated wear.

In appliance and power-tool enclosure tooling, the enhanced surface durability supports smoother sliding and more reliable hole engagement under higher loads. The XNP coating is suited to environments where abrasion and micro-scoring can otherwise shorten service intervals.

For progressive forming inserts and transfer mold tooling, select the appropriate tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match point engagement and forming conditions. The availability of multiple point geometries lets engineers optimize guidance without changing the fixed mounting length range used on the tooling.

• Use for die alignment and repeat positioning in heavy-load press/injection assemblies
• Choose tip shapes based on engagement needs and the forming profile
• Rely on XNP coating for improved surface durability under abrasive cycles

The provided specifications describe geometry, dimensions, and the XNP coating, but they do not list the underlying steel grade or heat-treatment state (e.g., pre-hardened vs. quenched & tempered, nitrided). As a result, material-related properties such as HRC hardness, wear-resistance level, and toughness trade-offs cannot be stated from the input data.

What can be confirmed is that the XNP coating is intended to enhance surface durability for long service intervals, which typically improves resistance to abrasion and minor fretting at the locating interface. When selecting among variants, treat tip shape changes as contact-profile optimization, while the coating supports the durability requirement across repeated alignment cycles.

• Heat treatment: Not specified in the provided data
• Hardness (HRC): Not specified in the provided data
• Wear/toughness: Coating targets improved surface wear behavior; bulk toughness depends on base steel (not provided)

Start by matching the locating geometry to your tooling interface. This center dowel punch uses a fixed length L = 80–130 mm, so choose the specific L value that fits your die/base thickness and provides adequate protrusion toward the mating dowel-hole pattern.

Select the shank diameter D (mm) from 10, 13, 16, 20, 25 to correspond to the reamed dowel-hole diameter and the guidance fit required in your press/injection assembly. Then choose point length L1 (mm) from 13–19 or 19–25 based on how deep the mating hole engagement needs to be for stable centering during closure.

For fine alignment behavior, configure the point geometry using P (1.5–18 mm), W (1.5–6 mm), and R from the offered ranges (0.2–5, 0.2–6.5, 0.2–8, 0.2–10, 0.2–12.5), and pick a tip shape (H, J, K, L, N, O, R, V, X, Y, Z) matched to your engagement and forming conditions.

• Fixed: L = 80–130 mm
• Variable: D, L1, tip shape, P, W, R
• Fit consideration: Ensure D matches the mating dowel-hole diameter and verify tolerances on both parts for consistent centering under load (tolerance values not provided in the data)