Inch Standard Steel Ball Lock Ejector Punches - Heavy Duty, XAN DayTAN™ Coating

This heavy-duty ball-lock ejector punch is used in inch injection mold tooling where repeatable retention and fast ejection are critical. The ball-lock head geometry helps maintain stable seating in the punch retainer, reducing shift during high-cycle operation.

Automotive connector and housing molds: In cavity layouts with frequent parting-line cycles, the balanced geometry supports consistent punch face engagement while the XAN DayTAN™ coating helps maintain surface performance under abrasion from repeated sliding contact.

Electronics enclosure and latch tools: When thin features require tight alignment and controlled ejection timing, the reliable ball-lock retention helps prevent mislocation during ejection strokes.

General heavy-duty production molds: The wide range of tip shapes (H, J, K, L, N, O, R, V, X, Y, Z) and shank diameters supports matching to different cavity/core knock-out requirements while sustaining dimensional stability at the punch interface.

For this series, the provided documentation emphasizes performance driven by the XAN DayTAN™ coating, which is selected to improve wear resistance and extend punch service life in sliding retention and ejection conditions. The base steel grade and heat-treatment state (e.g., pre-hardened, quenched & tempered, nitrided) are not specified in the provided data, so no specific HRC or alloy-to-equivalent mapping can be stated here without additional material documentation.

• Coating-driven wear behavior: Increased resistance to surface abrasion at the ball-lock seating and contact zones reduces the rate of dimensional drift.
• Toughness vs. hardness trade-off: In ball-lock ejector applications, overly hard surfaces can be prone to micro-chipping under shock; therefore, robust coating plus suitable punch steel toughness is typically preferred for heavy-duty cycles (verify exact steel/heat treatment for final design).

If you share the steel grade or hardness target for your build, we can align the coating strategy to your required wear and impact profile.

Select dimensions by matching the ejector punch to the mold base opening and the cavity/core ejector stroke interface. The shank diameter D (in) = 37 ~ 125 must be compatible with the retainer bore and guide features used in your inch mold base assembly.

• Tip shape: Choose from H, J, K, L, N, O, R, V, X, Y, Z to match your part geometry and required contact area on the ejecting surface.
• Length (coded inch) L: Select from 250 ~ 450 or 275 ~ 450 to reach the desired ejection travel while maintaining safe clearance at the platen/base.
• P and W geometry: Use P (in) = 0.376 ~ 1.251 and W (in) = 0.062 ~ 1.083 to align the punch head/ball-lock profile with the receiver pocket.
• Ball-lock radius R: Confirm R values of 0.007 ~ 0.4375, 0.007 ~ 0.625, 0.007 ~ 0.75, 0.007 ~ 0.875, or 0.007 ~ 1 per your locking geometry.

Verify functional fit by checking retention seating surfaces and assembly clearances; tolerance stack-up in retainer bores and guide components can affect lock engagement and ejection stability.