Ball Lock Ejector Punches - Light Duty, Inch X Tip Shape

These light-duty ball lock ejector punches are used in injection mold tooling where controlled ball lock action is needed to hold and release small core details during ejection. The “inch X” tip shape supports reliable alignment at the punch/cavity interface, helping maintain consistent stroke-to-retention behavior in production.

• Automotive connector and small housing molds: Use the larger-than-shank point to improve load transfer during ejection while keeping punch loads in the light-duty range, reducing the risk of uneven release.
• Consumer electronics enclosures: The hardened M2 or A2 options provide stable ejection accuracy for thin-walled inserts, where repeatability matters across many cycles.
• Medical device housings with tight core interfaces: The geometry helps maintain dependable ball lock engagement/release, supporting consistent ejection of precision features.

Choose this variant when you need dependable ball lock performance and stable retention/release with light-duty loading and inch-based tooling standards.

This product is available in hardened M2 or A2 tool steel, selected to balance wear resistance and toughness for repeatable ejection. Both grades are commonly used for punches and other mold components where dimensional stability under cyclic loading is required.

• M2 (AISI M2 equivalent): Typically higher wear resistance; can be slightly less forgiving under heavy shock compared to more impact-tolerant grades.
• A2 (AISI A2 equivalent): Often offers a strong toughness-to-wear trade-off for components seeing intermittent higher loads.

In the hardened state, the punching surfaces maintain hardness for improved abrasion resistance. Exact HRC values are not provided in the supplied specifications; final hardness should be confirmed to match your mold shop’s acceptance criteria. Heat treatment is generally quench-and-temper into the hardened condition prior to precision grinding to preserve the X tip geometry and fit.

Select the ball lock ejector punch by matching the shank diameter (D), the coded length (L), and the tip geometry to your core/cavity ejection path and retention pocket. For this series, D is offered at 0.3750" (37), 0.5000" (50), 0.6250" (62), 0.7500" (75), 0.8750" (87), and 1.0000" (100).

• Length: Use L (coded inch) in the 250～450 range to set the ejection stroke engagement depth.
• Tip fit/lock dimensions: Choose the appropriate P and W ranges to match the ball lock pocket geometry. Available P ranges include 0.376～0.875, 0.501～1.25, 0.626～1.5, 0.751～1.5, 0.876～1.75, and 1.001～1.75; W is 0.062～0.867; and R ranges from 0.007～0.4375 up to 0.007～0.875 depending on the option.

Because tolerances for each dimension are not specified here, verify your mold drawing tolerances and ball lock pocket clearances during tool tryout to ensure secure retention and smooth release.