Steel Ball Lock Ejector Punches Light Duty, Inch, XNT DayTiN® Coating

These light-duty ball lock ejector punches are used in injection mold tooling where the ejector system must provide stable positioning and repeatable, controlled ejection. The ball-lock point geometry is especially effective in mold bases that rely on punch-and-retainer assemblies to prevent punch drift during cycling.

• Automotive connector and small housing molds: Suitable for inch-standard components requiring consistent ejector contact. The larger point geometry helps maintain alignment while operating at moderate loads.
• Appliance and consumer product enclosures: Often require reliable ejection with limited space. The configurable shank diameter range and coded lengths (L = 250–450) support compact ejector layouts.
• Precision electronics housings: Beneficial when surface durability against wear is needed. The XNT DayTiN® coating improves wear resistance in high-cycle ejection.

Overall, this variant pairs the ball-lock contact design with an XNT DayTiN® surface treatment to improve wear behavior in light-duty, inch-based mold builds.

The punch is specified as Steel with an XNT DayTiN® coating intended to improve surface durability in ejector service. While the exact steel grade and heat-treatment cycle are not provided in the data, the manufacturing approach for light-duty ejector punches typically uses precision tool-steel stock and a controlled finishing process to maintain fit with the retainer.

• Coating (XNT DayTiN®): Enhances wear resistance at the contact surfaces, helping resist abrasion during repeated ejection cycles.
• Hardness & toughness trade-off: In ejector applications, higher surface hardness improves wear life, but over-hardening can reduce toughness. The coating provides a surface-focused wear improvement while keeping the underlying steel suitable for light-duty loading.
• Heat treatment state: Not specified; selection is typically aligned to achieve stable core toughness and dimensional control before coating.

If you require a specific HRC target or a defined heat-treatment state, confirm the steel grade and processing route with your Axiom Molds technical representative.

Selection starts by matching the ejector punch to the inch-based mold retainer and cavity/core spacing requirements. Use the provided dimension ranges to select the correct shank diameter and the coded length for your layout.

• Shank diameter (D, in): Choose from 0.3750 (37), 0.5000 (50), 0.6250 (62), 0.7500 (75), 0.8750 (87), or 1.0000 (100).
• Length (L, coded inch): Select L in the range 250 to 450 to achieve the required ejection travel and clearance.
• Tip geometry: Confirm the Tip Shape code (H, J, K, L, N, O, R, V, X, Y, Z) that matches your ball-lock interface design.
• P and W dimensions: Use the P range and W range to verify contact and engagement with the retainer; P is listed as 0.376–0.875, 0.501–1.25, 0.626–1.5, 0.751–1.5, 0.876–1.75, 1.001–1.75, and W is 0.062–0.867.
• R dimension: Verify radius using the provided R ranges (0.007–0.4375 up to 0.007–0.875 depending on variant).

Because tolerances are not specified in the data, ensure your retainer/punch interface tolerances are validated in your assembly drawings before final approval.