M2 Steel Ball Lock Ejector Punches Light Duty Metric

These light-duty ball-lock ejector punches are used in progressive and transfer die sets where reliable blanking and consistent part ejection are required. The ball-lock retention helps maintain positive locating of the punch during repetitive cycling, reducing the risk of drift that can affect ejection timing.

• Automotive and appliance metal stamping: pair the correct tip shape with your strip or formed-feature geometry for stable ejection forces over long production runs. The wear-focused steel variant supports tooling longevity at the light-duty loading level.
• Thin-gauge components in high-throughput lines: choose a shank diameter within 6–32 mm to match die wear surfaces and maintain alignment. Short point lengths (10–13, 10–19, or 13–25 mm) help control penetration and avoid damage to delicate formed parts.
• Mixed-feature ejection stations: use selectable tip geometries (H, J, K, L, N, O, R, V, X, Y, Z) to match varied undercuts and contact areas, improving ejection repeatability.

The primary material option is M2 steel, a high-speed steel grade commonly selected for tooling that needs strong abrasion resistance. Compared to carbide-like wear resistance, M2 offers a practical balance of wear resistance and toughness, which is important for ball-lock punches that experience cyclic impact from ejection.

• M2 (HSS): typically supplied hardened to improve wear resistance for long die life. The hardened condition trades some ductility for improved hardness and edge stability.
• PS4 (alternative): provided as a second material option for engineers who prefer a different performance balance. If your process emphasizes impact tolerance over maximum wear, PS4 may be considered relative to M2 within your qualification.

For both materials, plan on machining and surface finishing compatible with hardened tool steels, then verify performance using your expected cycle count and ejection load.

Select the ejector punch dimensions by matching the die layout and the required ejection engagement at your part contact area. Start with the shank diameter D = 6–32 mm, choosing the closest size that fits the die bushing or guide bore and maintains alignment through the stroke.

• Point/penetration control: choose L1 (10–13 mm, 10–19 mm, or 13–25 mm) based on required reach to contact the part for ejection without over-penetration.
• Overall length: select L (63–100 mm, or 71–100 mm) to ensure correct stick-out and clearance across the die set thickness and shut height.
• Tip fit: match P (1.4–10 mm) and W (1.4–12.5 mm) to the workpiece feature geometry. Use the specified tip radius R = 0.2 mm when the part edge requires a controlled contact profile.

If your application uses a ball-lock housing, validate that the selected variant maintains the intended retention and does not force interference in the guided stroke. Confirm any required fit tolerances with your die standard since tolerance values are not specified in the provided data.