Ball Lock Regular Ejector Punches Heavy Duty, Inch, XNP Coating

Ball-lock ejector punches are used inside punch-and-die tooling to provide stable ejector action while maintaining secure retention under repeated cycling. This heavy-duty inch variant, supplied with an XNP coating, is especially suited for applications where long production runs demand consistent ejection without premature wear at the contact interface.

• Tool & die work for general forming and stamping: choose tip shapes (H, J, K, L, N, O, R, V, X, Y, Z) to match the required contact profile, helping keep ejection force transfer predictable.
• Automotive and industrial components molds: the ball-lock design supports controlled ejection and helps prevent punch shift during wear cycles.
• Maintenance-focused tooling assemblies: the standardized Dayton LAMINA part format simplifies component matching during service, reducing downtime during punch replacement.

Where wear is the limiting factor, the XNP coating improves wear resistance, supporting reliable locking and consistent ejector performance across cycles.

This series is offered in M2 and PS4 material options, enabling selection based on wear resistance and toughness needs. M2 is a high-speed steel class commonly selected for tooling interfaces that see abrasive wear and frequent cycles. PS4 is a tool steel option intended for durable performance in die components, typically chosen when a balance of strength and wear resistance is required for production service.

• Hardness/heat treatment: the provided metadata does not specify the exact heat-treat condition (e.g., quenched & tempered or nitrided) or hardness in HRC for M2 or PS4, so the final hardness should be confirmed from the specific product lot/spec sheet.
• Wear vs. toughness trade-off: M2 generally supports higher wear resistance in cutting/tooling applications, while the alternative material may offer a different toughness/wear balance depending on its specified heat treatment.

The XNP coating complements the base steel by reducing surface wear at the ejector contact area during repetitive ejection.

Select dimensions by matching the ejector punch shank diameter and coded point length to the mold’s guide/support geometry and the required ejection contact. This series provides D (shank dia.) from 37 ~ 125 in and Standard point length L coded inch ranges such as 250 ~ 600, 250 ~ 700, 275 ~ 700, and 300 ~ 700, depending on the selected variant. Additional coded lengths are also shown as B and C point length ranges with the same listed bracketed options.

• Match cavity/core clearance: use the specified L (and whether B/C/D point length options apply) to ensure the punch reaches the intended ejection travel without bottoming.
• Check fit and tolerances: the metadata lists P dimension from 0.05 ~ 1 in, W from 0.05 ~ 0.5 in, and R at 0.007; confirm these features against your guide/retainer interfaces.
• Configure tip shape: choose the tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match the required contact profile for controlled ejection.

Confirm whether your assembly expects fixed vs. variant-dependent coded lengths before finalizing the BOM.