Tapered Head Ejector Punches - RW Coating

These tapered head ejector punches with an RW treated surface are used in injection mold tooling where repeated punching and positive part release are required. The tapered head geometry supports stable contact with the mating surface, helping maintain alignment during ejection cycles and reducing the risk of scoring on the punch contact area.

• Automotive and industrial stamping-style tooling: Suited for heavy-load punching and consistent load transfer thanks to the single-stepped shank that stabilizes fit in die/punch sets.
• Die casting and forming tooling: Ideal for long production runs where abrasion resistance matters; the RW coating helps improve wear performance under repeated cycles.
• General appliance/consumer component molds: Works well in standard ejector arrangements that demand dependable punch geometry and repeatable ejection.

Choose the RW-coated, single-stepped configuration when you expect high contact stress and frequent ejection, so the punch remains dimensionally stable over time.

The product is made from powdered high-speed steel with an SKH51 equivalent (commonly associated with AISI M2 class performance). Powder metallurgy processing improves alloy uniformity and can enhance toughness and wear characteristics compared with conventional high-speed steel.

In heavy-load punch applications, hardness and wear resistance are critical trade-offs. High-speed steel grades like SKH51 class typically provide good wear resistance at elevated contact temperatures, while still maintaining toughness sufficient for punching and ejection duty.

• Wear resistance: Enhanced by the RW treated surface/coating to reduce abrasion under repeated mold cycles.
• Toughness vs. hardness: Proper heat treatment and coating selection balance resistance to edge wear with resistance to chipping.
• Heat treatment state: Supplied as an ejector punch with an RW treated surface; final hardness depends on the supplier’s heat treatment cycle for the SKH51 equivalent.

Select the punch by matching its shank diameter and tip dimensions to the required guide/bushing and contact geometry in your mold. Use the provided size families to choose D (shank diameter: 8, 10, 13, 16 mm) and the tip dimension P (ranges: 4–7.99, 5–9.99, 6–12.99, 10–15.99 mm).

Next, confirm the available travel and ejection depth using L (L dimension ranges: 60–80, 60–90, 70–100, 50–80, 55–90, 65–100 mm) and the head geometry option B (tip length: L or S).

• Fit considerations: Ensure the shank diameter D matches your ejector plate/guide bore requirements and that any clearance supports smooth movement without lateral play.
• Cavity/core match: Choose P and B so the tapered head engages the mating area without overstressing the contact zone.
• Configurable dimensions: Material is fixed by series (SKH51 equivalent), while D, P, L, and B are selected from the given ranges.