Metric Ball Lock Ejector Punches Heavy Duty XNP Coating

These heavy-duty ball-lock ejector punches are designed for injection mold tooling where consistent, controlled ejection is critical. Their ball-lock retention helps maintain stable coupling between the ejector punch and the die insert during repeated actuation cycles.

• Automotive connector and housing inserts: Use this variant in progressive or transfer dies where strong retention prevents punch shift and supports repeatable part release.
• Appliance and consumer product housings: The point-to-shank geometry supports reliable locking and positioning, helping reduce ejector wobble when molding thin-walled parts.
• High-throughput production runs: The XNP coating improves wear resistance at the punch contact area, supporting longer service life under punch press and die-station conditions.

Select the appropriate shank diameter and length to match your die/cavity layout, ensuring proper ball-lock engagement and stable ejection timing.

The provided data specifies the XNP coating and the heavy-duty ball-lock geometry, but it does not include the underlying steel grade or heat-treatment state (e.g., pre-hardened vs. quenched & tempered). Therefore, material hardness (HRC), toughness targets, and exact wear mechanisms cannot be stated from the supplied specifications alone.

In this product family, the practical performance emphasis is on the XNP coating to reduce friction and wear where the punch point and shank interfaces contact the die components. This typically benefits production environments where ejector surfaces see repeated loading, sliding, and localized contact pressure.

• Coating-driven wear reduction: Better resistance to surface degradation during cycles.
• Trade-off consideration: While coatings improve surface wear behavior, dimensional stability must still be maintained through correct selection of D, L, and fit to the die pocket.

If you need exact steel grade (for instance, an H13-equivalent) and target hardness in HRC, request the material certificate for this series code.

Correct sizing ensures ball-lock engagement and stable ejection. Use the D (shank dia.) to match the die component designed for your ejector system: 13, 16, 20, 25, 32, 40 mm.

• Overall length: Choose L = 80 ～ 100 mm to suit your die stack height and knockout depth requirements. Longer strokes require verification of clearance to prevent over-travel.
• Point (tip) length: Select L1 = 19 ～ 30 mm based on how far the punch must penetrate to contact the part.
• Tip shape: Confirm the required Tip Shape code (H, J, K, L, N, O, R, V, X, Y, Z) to match the part geometry and ejection contact area.
• Positioning features: Use the listed ranges for P (13.1 ～ 32, 16.1 ～ 38, 20.1 ～ 40, 25.1 ～ 44, 32.1 ～ 50, 40.1 ～ 56) and W (1.57 ～ 34.73) along with the applicable R (0.2 ～ 16 / 19 / 20 / 22 / 25 / 28) to maintain the intended lock geometry.

Because no tolerances are provided, engineers should verify fit/clearance against the die’s ball-lock receiving dimensions; maintain the designed functional engagement rather than relying on nominal values.