M2 Steel Ball Lock Regular Ejector Punches - Light Duty, X-Shaped Tip

In injection mold tooling, light-duty ball lock regular ejector punches with an X-shaped tip are used to keep ejection forces well controlled while maintaining reliable punch positioning in the die stack. This style is especially suitable for metric automotive connector molds, where repeated cycling demands consistent part release without excessive wear in the ejection mechanism.

• Automotive connector housings: The ball lock geometry improves retention within the die assembly, helping prevent punch shift under moderate ejection loads.
• Consumer electronics enclosures: The X-shaped tip supports stable guidance during stroke, reducing sensitivity to minor misalignment and supporting predictable ejection.
• General light-duty production tooling: Appropriate selection of shank diameter (D = 6–38 mm) and length (L = 63–100 mm ranges by option) supports proper stack-height fit and consistent ejection timing.

Using M2 steel further aligns this variant with environments where long service intervals and wear resistance are needed for light-duty metric tooling.

This ejector punch variant is offered in M2 steel (and an alternative PS4, if selected). M2 is commonly used for ejector components where wear resistance and dimensional stability during repeated thermal cycling are critical. Compared with PS4 options, M2 is typically selected when longer service intervals and stronger resistance to abrasive wear under light-duty ejection are priorities.

• Heat treatment state: The exact heat treatment/temper state is not provided in the provided data; final hardness and surface condition should be confirmed with the supplier specification sheet for your part number.
• Wear vs. toughness: Higher wear resistance steels are generally optimized for tooling life, with trade-offs in toughness depending on the final temper.
• Tip geometry impact: The X-shaped tip concentrates guidance forces in a controlled manner, which complements M2’s wear-focused performance for repeated ejection.

For PS4 builds, validate hardness and wear expectations against your cycle count and ejection load to ensure the punch retains function over time.

Selection should start with the shank diameter and the stack-height fit in your ejection system. Match D (shank dia.) = 6–38 mm to the corresponding bore and pocket in your die base. Then choose the point length (L1) from the available ranges (10–13, 10–19, 13–25, or 19–30 mm) to ensure the tip fully engages the cavity-side interface without bottoming.

• Overall length (L): Confirm L within the configured options (63–100, 71–100, or 80–100 mm) so the punch protrusion and return stroke meet your ejection timing.
• Point dimensions: Use the available P = 1.4–12 mm and W = 1.4–14 mm ranges, along with R = 0.2 mm, to align tip geometry with your knockout/guide requirements.
• Ball lock integration: Verify that the ball lock retention features are compatible with your die assembly design to prevent vertical play.

Tolerance and fit must follow your mold design drawing and the punch supplier’s final dimension standards; ensure clearance around the shank bore and adequate daylight for full stroke.