Metric Ball Lock Pilot Punches - Tapered Tip, Heavy Duty

These metric ball lock pilot punches are used in injection molding and metal-insert tooling contexts where repeatable alignment between mold components is critical. The tapered nose supports controlled entry during press or build-up, improving center guidance before full engagement.

• Progressive/transfer stamping die locating: Select this heavy-duty variant when locating loads are high and you need stable pilot guidance across repeated cycles.
• Automotive connector or bracket assemblies with insert tooling: The tapered tip helps maintain alignment during die close, reducing the risk of misregistration that can affect pin/insert location.
• High-mix production housings and fixtures: The ball-lock style supports consistent positional repeatability in die sets, helping maintain part-to-part accuracy over long runs.

Material options referenced for this product (notably M2) provide wear resistance needed for stable pilot performance, making the tapered tip especially suited for reliable initial guidance under load.

This product is offered in M2 and PS4 steel options. M2 is a high-speed steel commonly used for durable tooling; it is typically comparable to AISI M2 families, providing strong wear resistance with good toughness for guiding and locating features.

The PS4 option is intended for applications needing alternative balances of wear and toughness depending on processing requirements. In practice, pilot punches are manufactured by machining to size followed by heat treatment to achieve functional hardness and dimensional stability.

• Heat treatment state: delivered as properly hardened tooling after quench and temper or equivalent process for the selected grade (final hardness depends on the steel choice).
• Hardness & trade-offs: higher hardness improves wear resistance of the tapered guidance surface, while excessive hardness can reduce impact toughness—important for heavy-duty locating loads.

To select the correct ball lock pilot punch dimensions, match both shank size and effective guiding length to your mold or die locating requirements. Start with D (shank diameter) = 10 ~ 40 mm to ensure the pilot fits the corresponding bushing/hole with proper alignment guidance.

• Point length (L1): choose from 19 ~ 62 mm, 19 ~ 92 mm, 25 ~ 102 mm, or 30 ~ 102 mm based on the available engagement depth during die close.
• Total punch length (L): select 80 ~ 110, 80 ~ 140, or 80 ~ 150 mm to maintain sufficient stick-out and avoid interference with adjacent components.
• Tip diameter (P): ensure P = 1.45 ~ 30 mm fits the lead-in geometry for controlled pilot entry.

Use the taper tip to guide early alignment; confirm that the maximum shank diameter and the selected L1 do not exceed the cavity/core or guide clearance. Tolerance and fit must be verified against your locator hole/bushing specs to guarantee repeatability at speed and load.