Steel Ball Lock Ejector Punches - Light Duty

These light-duty ball lock ejector punches are used in injection mold tooling and progressive die inserts where controlled ejection forces are required. The ball-lock head improves positional stability during press and mold cycling, helping maintain repeatable punch seating and consistent part release.

• Automotive connector and small housing molds: select the appropriate tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match gate/part geometry and reduce the risk of scuffing or incomplete ejection on thin features.
• Consumer device enclosures and light-duty inserts: use the steel construction to support predictable assembly fit while maintaining efficient punch retention for repeated production runs.
• Tool-and-die work for thin-wall components: the light-duty configuration is suited when ejection pressure is moderate and dimensional consistency across cavities is critical.

Choose this variant when you need a stable lock-in interface and interchangeable tip shapes to align the punch point with your cavity/core contact area.

This series is offered in selectable steels: M2, PS4, and A2, enabling you to balance wear resistance, toughness, and cost for specific ejection loads. M2 is a high-speed steel family known for strong abrasion resistance; it typically supports higher hardness but can be less forgiving under severe shock compared with tougher tool steels.

• M2: preferred when long run time and tip wear control are priorities for the ejection interface.
• PS4 / A2: suited for applications needing a more balanced toughness-to-wear profile.

Heat treatment is configured to achieve the required hardness for die/punch service; final properties depend on the chosen steel grade and the manufacturer’s tempering practice. In all cases, consistent quench-and-temper (or equivalent heat treatment) is used to obtain stable hardness while preserving toughness for repeated lock/unlock cycling.

To select the correct punch, start by matching the shank diameter D to the toolholder/guide bore: D is specified in the range 6 to 38 mm. Next, choose the overall length L and the point length L1 to achieve the required stroke and contact depth to the cavity/core surface.

• Point length L1 (mm): available ranges include 10–13, 10–19, 13–25, and 19–30.
• Overall length L (mm): available ranges include 63–100, 71–100, and 80–100.
• Tip contact dimensions: P = 1.4–12 mm and W = 1.4–14 mm help align the punch point footprint with your part geometry; R = 0.2 mm is fixed per this parameter set.

Confirm tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match the cavity contact profile. Since lock-in punches must seat reliably, ensure your guide/support features are dimensioned to maintain proper fit with the selected shank diameter; use appropriate tolerances for ejector alignment and consistent ejection repeatability.