TiCN Coated Tapered Head Ejector Punches

These TiCN coated tapered head ejector punches are used in injection mold tooling where the ejector element must deliver stable, repeatable contact under heavy punching and forming loads.

• Automotive connector and housing molds: In multi-cavity runs, the tapered head mounting helps keep alignment during high-cycle ejection, while the TiCN surface treatment supports consistent wear performance against abrasive flash and fastener features.
• Consumer electronics and appliance housings: The single-stepped shank promotes reliable seating in the ejector assembly, reducing wobble and maintaining controlled contact for efficient part knock-out.
• Trimming and forming stations (integrated tooling): The A-tip geometry supports controlled contact, and the TiCN coating is suited for cycles with intermittent sliding where tool wear can otherwise degrade ejection repeatability.

The base steel is powdered high-speed steel with an SKH51-equivalent grade. SKH51 is commonly aligned with the AISI M2 class of high-speed steels, offering a balance of wear resistance and hot hardness for punching and forming applications.

• Heat treatment state: typically supplied as quenched and tempered (prepped to achieve high cutting/tool hardness) for dimensional stability during mold use.
• Hardness & wear: high-speed steels are selected to reach high hardness (commonly in the high-HRC range) to resist edge wear during repeated punching cycles; TiCN then further improves surface wear resistance.
• Toughness trade-off: higher hardness can reduce impact toughness, so the tapered head mounting and stable shank design help manage load transfer and reduce stress concentrations.

If alternative steels are available, higher-alloy grades often improve wear but may be less forgiving under impact; for this family, the SKH51-equivalent choice prioritizes toughness-for-wear balance.

Select dimensions by matching the punch tip geometry to the mold cavity/core feature that the ejector must contact. This series provides variable D (shank diameter) options of 8, 10, 13, 16, 20, 25 mm and fixed L of 60 to 100 mm.

• Choose D first: Ensure the ejector hole/support bore and guide system are sized for the selected D. Use the closest available D to maintain concentricity and reduce clearance-induced vibration.
• Match tip dimensions P: Pick the P range that corresponds to the required contact area. Available P ranges are 3–7.99, 3–9.99, 6–12.99, 10–15.99, 13–19.99, and 18–24.99 mm depending on configuration.
• Control length stack: Confirm LC (full length alteration) of 37–99.9 mm and the tip dimension alteration PC ranges (1.5–2.99 up to 9–17.99 mm) so the working tip protrusion meets your ejector stroke.
• Tapered mounting fit: Because the head is tapered, verify seating/fit in the mating holder to prevent micro-misalignment under load.