Point Larger than Shank Ejector Ball Lock Punches - Heavy Duty, Inch

These heavy-duty ball-lock punches are used in injection- and stamping-related die sets where repeatable ejection is critical, especially when ejector alignment and secure retention in the tool holder are required. The larger point versus the shank improves guidance and stability during ejection strokes, reducing the risk of cocking under load.

• Progressive/transfer die stations: In multi-hit forming or punching lines, controlled ball-lock retention helps maintain consistent ejection timing and position across cycles; the variant’s inch-coded geometry supports stable fit within the punch-and-die setup.
• Automotive and appliance components: For high-throughput part ejection, the improved point helps keep formed parts moving cleanly out of the die cavity; XNA coating supports wear resistance on the point during sustained production.
• Fine-detail die applications: Where tip shape (H, J, K, L, N, O, R, V, X, Y, Z) influences part release, selecting the appropriate shape together with the specified shank diameter range (37–125 in) supports controlled guidance without compromising retention.

The specific steel grade and hardness (HRC) are not provided in the supplied metadata, so heat-treatment values cannot be stated reliably for this variant. What is supported by the description is that the working surface uses an XNA coating, intended to improve wear resistance for die applications.

• XNA coating: Designed to reduce point/shank wear under repetitive die loading, supporting longer service intervals during production.
• Wear vs. toughness trade-off: In general, die steels with higher hardness improve wear resistance but can reduce toughness; since hardness is not specified here, choose based on your tool steel selection and expected contact pressure.
• Coating compatibility: Ensure your post-processing/handling does not damage the coated surfaces on the point to preserve the intended wear performance.

For final engineering sign-off, confirm the underlying substrate grade and the supplied HRC/heat-treatment data from your procurement drawings or the product datasheet.

Select the ball-lock punch size by matching your tool holder’s retention geometry and your die’s ejector stroke requirements. This series uses inch-size coded dimensions, so choose the tip shape (H, J, K, L, N, O, R, V, X, Y, Z) that corresponds to your part release and guidance needs.

• Shank diameter (D): Available in 37 ~ 125 (in) range; ensure the tool holder ball-lock pocket is sized to accept the selected D without forcing insertion.
• Length (L): Coded ranges include 250–450, 275–450, and a range listed as 250–450; verify total stick-out and clearance relative to the die shoe and cavity depth.
• Point geometry (P/W/R): Use P = 0.376–1.251, W = 0.062–1.083, and R = 0.007–1 (with multiple sub-ranges depending on configuration). Match these to the required guidance/relief features in the die to control contact area during ejection.

Fit and tolerance: Ball-lock retention depends on dimensional conformity; use the coded dimensions for the punch group (J4/J6/J9/J12) to align with the intended holder standard and avoid clearance that could cause ejection misalignment.