DIN Standard Hardened Steel Gas Release Ejector Punches with Locating Dowel Holes

These DIN-standard gas release ejector punches are used to combine reliable ejection with controlled venting in precision injection and die-casting molds. The added locating dowel holes help maintain center alignment between moving ejector components and the fixed guide structure, reducing misalignment-related wear and sticking.

• Automotive and industrial connector housings: where gate area design can trap air, the gas-release function supports smoother part removal and reduces burn marks, while the locating dowel hole geometry improves repeatable punch positioning over high cycle counts.
• Thin-wall consumer electronics parts: stable punch alignment is critical for consistent ejection force and minimizing surface scuffing; the hardened steel base and WPC surface treatment help maintain dimensional stability under repeated contact.
• Die casting inserts and forming tools: gas management during cycling and precise guide interface fit improve durability when products see intermittent high-impact ejection loads.

The WPC-treated, SKD11-equivalent material variant is well suited for environments that demand both venting performance and extended wear life.

This component is described as WPC-treated hardened steel with an SKD11 equivalent to D2 steel. SKD11 (D2-family) is typically selected for high wear resistance in tooling: it can maintain hardness under abrasive contact, helping ejector punches resist tip wear in production.

• Hardness / wear–toughness balance: hardened D2-class steels provide strong abrasion resistance, but they generally trade off reduced impact toughness versus tougher grades. This makes correct alignment and proper venting especially important to avoid shock loading at the tip.
• Surface treatment: WPC surface treatment is specified to enhance wear resistance at the working surfaces exposed during cycling.
• Manufacturing process: produced as a precision ground/punched ejector style under DIN standard practices, with dimensional control for the shank diameter tolerance and the locating dowel hole feature.

Compared with less wear-focused steels, the D2-family chemistry favors longevity where sliding/abrasion dominates over severe impact.

To select the correct gas release ejector punch, start by matching the shank diameter D and the overall L to your ejector guide and return stroke envelope. The available shank diameter range is D = 10 ~ 45 mm, while the L dimension is offered in stepped ranges including 70–120, 60–120, 80–120, and 100–120 mm (exact option depends on configuration).

• Tip geometry: choose the required tip shape (Round, Rectangle, Oblong, Double flatted round, Radius rectangle) and match the corresponding tip dimension set: P = 3 ~ 35 mm, W = 3 ~ 9 mm, and corner radius R = 0.15 mm (per spec).
• Tip length / reach: use B (L, S, X) and ensure the tip length and overall reach fit within the core/cavity clearance. Account for the provided alteration parameters: LC = 34 ~ 72 mm and PC = 2.8 ~ 30 mm, with corresponding WC = 2.8 ~ 8 mm when applicable.
• Fit considerations: the description specifies an m5 shank diameter tolerance, so verify guide bore selection is compatible with an m5 fit class for repeatable alignment.

Finally, confirm the locating dowel hole feature matches your alignment dowel pattern so the punch seats concentrically during assembly.