Ball Lock Ejector Punches Heavy Duty (XNAP Coating)

These heavy-duty ball-lock ejector punches are used in injection mold tooling where the ejection mechanism must remain stable through high cycle counts. The metric formats and larger point relative to the shank help ensure consistent ball-lock engagement, reducing the risk of misalignment during repeated press cycles.

• Automotive connector housings: ideal for molds that require frequent, reliable ejection of large or multi-cavity components, especially where tight ejection repeatability supports dimensional control.
• Appliance and industrial housings: suited for robust release in long production runs; the XNAP coating is selected to improve wear performance on the working surfaces.
• General die inserts requiring strong locking: compatible with builds that depend on smooth punch movement and stable locking under cyclic load.

Use this variant when ball-lock stability and wear resistance are critical for reliable ejection throughout production.

The provided specification set focuses on geometry and coatings (XNAP) rather than an explicit steel grade. For steel selection in ball-lock ejector applications, engineers typically choose wear-resistant mold steels that balance hardness with toughness to resist localized impact at the punch tip during ejection.

• XNAP coating: used to enhance surface wear resistance on the working surfaces exposed during repeated locking/unlocking and sliding.
• Hardness / trade-off: higher hardness generally improves abrasion resistance, but can reduce toughness if the core steel is over-hardened; a quenched & tempered condition is commonly selected to maintain toughness in heavy-duty ejection.
• Manufacturing approach: precision turning/finishing of shank and point geometry to maintain ball-lock fit and smooth travel; subsequent surface treatment to achieve the targeted wear behavior.

If you need an exact HRC target or the underlying steel grade for this DAYTON series, confirm with the supplier’s material certificate for the selected option (tip shape D/J-group).

Select the ejector punch size by matching the required locking and travel geometry to the mold’s ejector system components. Start with D (shank dia.), available at 13, 16, 20, 25, 32, and 40 mm, and choose the corresponding P dimension range for the same variant. Then confirm the fixed L (overall length) is within 80–100 mm and the fixed L1 (point length) is 19–30 mm.

• Tip shape: choose H, J, K, L, N, O, R, V, X, Y, or Z based on the required point profile for ball-lock engagement and part ejection geometry.
• Jektole group: use J6, J9, or J12 to align with the mold’s ball-lock housing/retention architecture.
• Critical small features: verify W (1.57–34.73 mm) and R (0.2–16/19/20/22/25/28 mm) to ensure the point and transition match the mating components.

Because these punches participate in precision locking, use the manufacturer’s specified tolerances for D, P, and point radii to maintain proper fit and smooth release.