Metric Light Duty Ball Lock Ejector Punches

This metric light duty ball lock ejector punch is used in injection and transfer mold tooling where repeatable part release and ejector stability are required. The ball lock engagement helps maintain consistent punch positioning under press load, reducing the risk of misalignment between the punch and its corresponding pocket.

• Precision die insert applications: Ideal for die sets that use standardized ejector layouts. The point geometry and controlled unloading support reliable contact and predictable stroke behavior in light duty production cycles.
• Electronics and consumer housings: Suitable for parts that require smooth ejection without surface damage. The stable retention of the punch helps maintain consistent ejection force distribution across the cavity.
• Automated die systems: Works well where frequent cycling demands dependable ejector repeatability. The CRN coating improves wear resistance at the contact zone, supporting long-term performance for consistent part release.

Choose this variant when you need a compact, metric ball-lock design with wear-improving surface protection for reliable ejection in precision tooling.

The provided variant specifies a CRN coating intended to improve wear resistance and ejection/release performance at the punch contact surfaces. Because the underlying steel grade and heat treatment state are not listed in the input data, hardness values and exact quench-and-temper (or nitriding) parameters cannot be confirmed from the specifications supplied.

• Wear resistance vs. toughness trade-off: The CRN-coated surface is selected to reduce abrasive wear during repeated cycling. This generally improves tool life at the wear interface while the base metal provides the required structural toughness for punch retention under press load.
• Surface engineering benefit: For light duty die work, coating performance is especially relevant where the point length and tip geometry control contact during ejection.

If you need a confirmed steel grade (e.g., H13/H13-equivalent) or a target hardness (HRC), please request the material cert/heat treatment data for this series before final qualification.

Select the ejector punch size by matching the shank diameter (D), overall length (L 80–100 mm), and the point length (L1 19–30 mm) to the mold cavity/core and the ejector plate clearance. The ball-lock system requires correct engagement dimensions to ensure retention and stable positioning.

• Step 1—Match diameter: Choose D from 13, 16, 20, 25, 32 mm to align with your ejector guide and punch pocket.
• Step 2—Set contact reach: Use L1 within 19–30 mm to control how far the point projects into the parting plane.
• Step 3—Fit overall length: Select L in the 80–100 mm range so the punch stroke and back clearance remain within design limits.
• Step 4—Confirm engagement geometry: Ensure P and W dimensions fall within the series options (P: 13.1–32 / 16.1–38 / 20.1–40 / 25.1–44 / 32.1–50 mm; W: 1.57–27.8 mm) and select the appropriate R range (e.g., 0.2–16, 0.2–19, 0.2–20, 0.2–22, 0.2–25 mm).

Because tolerances are not provided in the input data, keep dimensional checks against your drawing and ball-lock interface specifications during qualification.