Metric Ball Lock Ejector Punches - Heavy Duty

Metric ball lock ejector punches in heavy-duty die sets are used to hold small components securely during forming and to drive stable, repeatable ejection at the end of the cycle. Their ball lock retention helps maintain consistent point seating under load, reducing movement that can lead to flashing or dimensional drift.

Common scenarios include:

• Automotive and electronics terminal/connector blanking: Use the secure ball-lock interface and XNT DayTiN® coated surface to resist abrasion during high-cycle punching and ejection, supporting longer tool life.
• Precision die work for housings and brackets: Select the point shape set (X, R, K, O, H, L, J, N, V, Y, Z) to match cavity geometry while maintaining consistent ejection force transmission.
• Medical device component forming: The stable retention and controlled ejection timing support repeatability in thin-wall or closely toleranced parts where scrap reduction matters.

The provided metadata specifies a XNT DayTiN® coated ball lock ejector punch variant intended to improve wear resistance under heavy-duty cycles. While the underlying steel grade and exact heat treatment (e.g., pre-hardened, quench & temper, nitriding) are not listed in the input data, the DayTiN® coating is used to enhance abrasion resistance and maintain consistent blanking performance over time.

In wear-dominant die operations, the trade-off typically targets:

• Higher wear resistance to reduce point rounding and edge degradation, supporting stable ejection.
• Maintained toughness from the base tool material, which is required to resist chipping or micro-cracking at the point during repeated impacts.

If you compare coating options, the key differentiator for this variant is the DayTiN® surface aimed at long-cycle abrasion control versus uncoated or lower-performance surface treatments (exact comparative hardness values are not provided here).

To select the correct heavy-duty metric ball lock ejector punch, start by matching the shank diameter (D) and overall length to your ejector system. Available D values are 13, 16, 20, 25, 32, 40 mm.

Then confirm stroke/stack-up fit using the fixed and variable length dimensions:

• L (length): fixed range 80–100 mm.
• L1 (point length): fixed range 19–30 mm.
• P dimension: choose within the provided ranges (e.g., 13.1–32, 16.1–38, 20.1–40, 25.1–44, 32.1–50, 40.1–56 mm) based on required projection and guide contact geometry.

Finally, select the point geometry (Tip Shape: H, J, K, L, N, O, R, V, X, Y, Z) and the W and R values to match your die cavity/core interface. Ensure your punch seat and corresponding ball-lock pocket are designed with appropriate clearance for smooth retention; since tolerances are not specified in the input data, verify fit against your supplier’s drawing and your press alignment capability.