Metric Point Larger than Shank Ball Lock Ejector Punches - Light Duty

Ball-lock ejector punches with a point larger than the shank are used in metric injection and transfer die sets where stable positioning of the ejector is critical. The light-duty geometry helps maintain consistent contact at the point, improving predictable blanking and ejection behavior under lower cutting loads.

Common scenarios include automotive and appliance connector or clip blanking, where repeated cycling demands reliable retention in the ball-lock interface while the enlarged point improves alignment consistency in the die cavity.

They are also suitable for thin-wall forming support in light-duty operations, because the point-to-shank relationship provides centering and reduces risk of lateral drift during ejector travel.

• Metric die tooling: point diameter exceeds shank for stable seating
• Light-duty manufacturing: supports efficient blanking with consistent contact
• Varied tip shapes (H/J/K/L/N/O/R/V/X/Y/Z): enables matching to the process window

The provided specification data focuses on geometry and size ranges; no steel grade, heat-treatment state, or hardness values are specified for this light-duty metric ball-lock punch series. As a result, material properties such as HRC, wear resistance, and toughness trade-offs cannot be stated reliably from the input information.

In practice, ball-lock ejector punches are typically manufactured from wear- and shock-resistant tool steels, then heat treated (commonly quench-and-temper and, in some designs, surface treatments such as nitriding) to balance hardness and toughness for repeated cycling.

• Geometry-led performance: the larger point versus shank supports alignment consistency and stable contact.
• Material selection requirement: confirm the supplier’s steel grade and heat-treatment record for your specific load level, then validate hardness against expected wear mechanisms.

Select dimensions so the punch point supports the feature during ejection while the shank fits the ball-lock retention geometry of the tooling system. For this series, the shank diameter (D) is available at 13, 16, 20, 25, and 32 mm.

Match the point length (L1) to your ejection depth requirement: 19 to 30 mm (fixed range). Use the overall length (L) to satisfy clamp travel and support in the die block: 80 to 100 mm.

• Choose the P dimension range that matches your die cavity/core pocket for your selected tip shape (P options include 13.1–32, 16.1–38, 20.1–40, 25.1–44, 32.1–50).
• Verify clearance and guidance using W (1.57–27.8 mm) and R (0.2–16, 0.2–19, 0.2–20, 0.2–22, or 0.2–25 mm depending on configuration).

When integrating into a ball-lock system, confirm fit/clearance with the mating lock components; use the supplier drawing for the actual tolerances for your configuration.