Ball Lock Pilot Punches CRN Coated Round Tip Heavy Duty Inch

These ball-lock pilot punches are used in injection and stamping-oriented mold tooling where repeatable registration is critical across multiple cavities or stations. The round-tip ball-lock geometry helps stabilize locating during each punch cycle, improving alignment consistency between an ejector/punch and the corresponding die or mold feature.

• Automotive and appliance connector tooling: ideal for progressive die setups that require tight in-process part-to-part registration; the heavy-duty inch construction and wear-managed CRN coating support longer runs under intermittent load.
• Medical device housing fixtures: suited for secondary forming or trimming operations where positional repeatability affects downstream fit; controlled wear from CRN helps maintain consistent pilot engagement over time.
• Electronics enclosure stamping: used with multi-stage dies to reduce drift during high cycle production; pilot alignment remains reliable due to the ball-lock round tip design.

For this variant, the CRN coating is particularly suited to applications that balance frequent cycling with controlled wear, helping protect the pilot interface and maintain location accuracy.

The pilot punch is available in M2 (and PS4), supporting the steel-grade selection commonly used for wear-resistant, precision locating tooling. M2 is a high-speed steel (AISI M2 equivalent) typically chosen for a good combination of hardness and toughness in cutting and punching environments.

• Hardness / performance: M2 is generally selected to achieve high wear resistance while retaining sufficient toughness; however, maximum hardness can reduce impact resistance compared with more ductile tool steels.
• Coating effect: a CRN coating is specified to further improve wear control at the pilot interface during repeated punching cycles.
• Heat treatment state: the tooling is typically supplied in a heat-treated condition suitable for punch service (quenched and tempered or equivalent tool-steel heat treatment), with hardness tuned to resist wear while maintaining dimensional stability.
• Material comparison: when selecting between M2 and PS4, choose M2 for broader high-speed steel tooling capability; select PS4 when your process specifies an alternate tool-steel option for similar locating and wear requirements.

Select the correct pilot punch size by matching the shank diameter D, point length L (coded inch), and the corresponding point length ranges to your mold/die registration needs. The shank diameter D (in) is specified across 37 ~ 125, so choose a diameter that matches the locating bore in your die insert or tool plate for stable fit.

• Choose L within available coded-inch ranges: options include 250 ~ 600, 250 ~ 700, 275 ~ 700, and 300 ~ 700 (also reflected across [B], [C], and the D-related point length ranges provided).
• Use point length B/C/D logic: when your assembly references different point geometries, ensure the requested [B], [C], or D-coded point length falls within the same listed range for the version you select.
• Fit/tolerance considerations: because these are locating features, confirm the pilot-to-bore clearance and engagement length in your stack-up; the P dimension (in) = 0.061 ~ 0.999 should be reviewed against the available registration window to avoid under- or over-engagement.

Where your cavity/core design defines fixed locating depths, prioritize the point length range that ensures consistent engagement without bottoming.