Ball Lock Ejector Punches - Light Duty, Inch, XNAP Coating

These light-duty ball-lock ejector punches are used in injection molding and die casting tooling where reliable part stripping is required without overloading the ejector system.

• Automotive and appliance housings: The ball-lock retention helps keep the punch tip aligned during ejection, supporting stable stripping of thin-wall features. The XNAP coating is suited for repeated cycles where friction and wear can otherwise degrade surface finish.
• Die casting inserts and shallow bosses: The inch-coded point length options support consistent fit to cavity/core layouts, helping engineers match ejector travel requirements. The light-duty configuration is typically chosen when ejection forces are moderate.
• Electronics enclosures and snap-fit components: Tip stability during ejection reduces the risk of surface marking while the coating supports smooth wear behavior over production runs.

Available materials for this punch series are M2 and PS4. M2 is an AISI M2 tool steel equivalent commonly selected for balanced wear resistance and toughness; it is expected to perform well where repeated ejection cycles and sliding contact occur. PS4 is offered as an alternative material option when tooling requirements emphasize different hardness/behavior trade-offs for light-duty use.

• M2: Typically provided in a hardened state for improved wear resistance; suitable when you need good edge retention under cyclic contact.
• PS4: Selected to match specific performance needs versus M2, depending on required surface behavior and toughness balance.

For both material options, expect the finished punch to be produced through steel preparation, machining to the specified shank and point geometry, then appropriate heat treatment to achieve the target hardness for ejector service. Exact hardness and heat-treatment condition should be confirmed for the selected material and option.

Select dimensions to match the mold cavity/core ejector geometry and the required engagement with the molded part.

• Shank (D): Choose D in the range 25 ~ 100 in to fit the ejector guide and pocket design. Ensure the punch will not interfere with surrounding steel at full stroke.
• Point length and overall length: Standard coded point length/L options are given as 200 ~ 400, 200 ~ 500, 200 ~ 600, and 225 ~ 600 (inch coded). If using the fixed option, the fixed point-length/B & L range is 250 ~ 600.
• Geometric features (P, W, R): Verify the specified P (0.05 ~ 0.75 in), W (0.05 ~ 0.437 in), and R (0.007 in) to ensure tip profile compatibility with part release and surface contact points.

Use tolerance/fit based on your ejector bushing and punch pocket clearances; keep engagement length consistent so ball-lock retention maintains alignment through ejection.