M2 Steel Ball Lock Ejector Punches Heavy Duty (Inch)

Ball lock ejector punches are used in injection mold tooling where positive part alignment and stable ejection forces are critical. This heavy-duty variant suits automotive connector and electrical housing molds, where repeated punch-and-eject cycles demand consistent positioning to prevent part drag and cavity wear.

• Connector and housing molds: The ball lock style helps maintain material location during ejection, improving dimensional stability across high-volume runs.
• Appliance and industrial housings: M2 steel toughness supports demanding punching/forming conditions while maintaining ejector integrity.
• Multi-cavity production tooling: The XCD coating targets the wear-prone surfaces that see the highest friction and load during continuous operation.

In inch-based mold builds, the inch specification set and the heavy-duty geometry make it straightforward to integrate into existing ejector systems without re-engineering core/ejector interfaces.

This series is offered in M2 steel (also available as PS4 depending on the configuration). M2 is a high-speed steel known for strong hot hardness and abrasion resistance, making it suitable for heavy punch-and-eject duty where surfaces see both load and sliding contact.

• M2 steel: Typically provided in a heat-treated, service-ready condition appropriate for tooling punch work. Expect a hardness level in the high-HRC range, supporting wear resistance with a toughness trade-off versus lower-alloy steels.
• XCD coating (on this product variant): Adds additional surface wear resistance to help reduce point and contact wear during repeated punching and forming.
• PS4 comparison: When selected, it is typically chosen to balance cost and performance for tooling environments where extreme abrasion is less dominant than for full heavy-duty M2/XCD use cases.

For best results, coordinate coating and steel selection with your expected ejection force, cycle rate, and abrasive filler content in the molded material.

Select dimensions by matching the ejector punch shank diameter and functional lengths to your ejector plate and core/cavity interface design. The D (shank dia.) range for this series is 37 ~ 125 in, and the standard point length coded as L is available across 250–500, 250–600, 275–600, and 300–600 inch-coded ranges (including corresponding point length B and C and point length D options).

• D matching: Use the D size to ensure proper fit in the ejector system bore; confirm the ejector bore design tolerance supports assembly without binding.
• Length matching (L / B / C / D): Choose the coded length range that sets the correct engagement depth through the ejector plate while allowing safe clearance during ejection.
• Tip geometry: Verify Tip Shape (H, J, K, L, N, O, R, V, X, Y, Z) matches the parting/ejection requirement for your cavity geometry.

The product also specifies P = 0.062 ~ 1, W = 0.062 ~ 0.5, and R = 0.007 ~ 0.007; use these dimensions to align the working profile with the mating features in the core/cavity system.