M2 Steel Ball Lock Regular Ejector Punches - Light Duty XNAP Coating

Ball lock regular ejector punches are used in injection mold tooling and progressive die stations where parts must be released reliably with minimal friction. The light-duty configuration with a ball lock regular geometry helps maintain stable positioning in the plate, supporting repeatable ejection during high-cycle operation.

• Automotive connector and bracket inserts: Suitable for metric light-duty cavity inserts that need consistent part push-off without gouging or sticking, especially when ejection force must be controlled.
• Consumer electronics housings: The hardened punch tip and low-friction surface provided by the XNAP coating support smooth ejection from fine-texture or tighter-tolerance features.
• General progressive forming and punching: Works well in short-run or moderate wear environments where controlled ejection improves cycle stability and reduces downtime from mis-seating.

Choose this variant when you want M2 steel hardness with an XNAP surface to improve wear resistance while keeping ejection performance stable in light-duty tooling.

This punch is manufactured from M2 steel, an alloy high-speed steel commonly selected for its balanced wear resistance and toughness in tooling components exposed to repeated sliding and contact. For the light-duty application, the design relies on a hardened tip (heat-treated condition) to support consistent part release over cycles.

• XNAP coating: Used to reduce friction and enhance surface wear performance, improving ejection repeatability in production environments.
• Hardness/tribology trade-off: Higher hardness improves abrasion resistance, but excessive hardness can reduce toughness—so the selected heat-treated condition and coating together aim for stable performance.
• Material options: If you switch to PS4, expect a different balance versus M2 in wear capability; M2 is typically preferred when abrasion and tip longevity are primary concerns.

For best results, match the coating and steel selection to expected ejection cycles and abrasive content in the molded material.

Select the punch based on shank and working length so the ball-lock seating and ejector stroke align with the mold’s core/cavity and return system. Use D (shank diameter) = 6 ~ 38 mm to match the corresponding guide/bore size in your holder. Choose the L1 (point length) from the available ranges (10–13, 10–19, 13–25, 19–30 mm) to ensure the working tip reaches the parting interface without over-penetration.

• Overall length (L): Use the available options (e.g., 63–100, 71–100, 80–100 mm) to fit within your ejector plate stack height and to maintain sufficient support length.
• Tip geometry: Pick Tip Shape (H, J, K, L, N, O, R, V, X, Y, Z) to suit the release profile needed for your part feature.
• Contact dimensions: Confirm P = 1.4 ~ 12 mm and W = 1.4 ~ 14 mm are compatible with surrounding reliefs and die spacing.

When dimensioning the cavity/core, verify clearance and account for manufacturing tolerances in holder bore and ejector plate so the ball lock can seat securely without binding. The R dimension is listed as 0.2 mm, so align edge relief and contact areas accordingly.