Ball Lock Pilot Punches Tapered Tip Heavy Duty Metric

Ball lock pilot punches with a tapered tip are used to provide repeatable die-to-die alignment in precision injection-mold tooling and related auxiliary fixtures. In progressive or transfer die systems, the tapered nose helps guide the mating component during press approach, improving early center contact and reducing the risk of misalignment under high cycle loads.

They are well-suited for die locating and punch alignment where stable pilot entry is required—especially when tolerances stack across multiple stations or when tools experience vibration. The heavy-duty configuration paired with M2 steel options supports long-running production by resisting abrasion at the pilot tip and maintaining positional accuracy.

• Automotive connector and bracket housings: reliable guidance between mold halves and lifter/slide stations to maintain consistent cavity positioning.
• Appliance and industrial components: improved center guidance for high-throughput molding and frequent die changeovers.
• Medical device housings: consistent locating helps preserve fit-critical features that depend on repeatable alignment.

This series is offered in M2 and PS4 material options, selected for wear resistance at the pilot interface. M2 (high-speed steel, commonly comparable to AISI M2 family) is typically used for applications needing strong abrasion wear resistance with good toughness during repeated impacts and guidance cycles.

• M2: better suited for heavy-duty production where the tapered tip experiences continual rubbing and impact during pilot entry.
• PS4: an alternative steel option for stable performance where your plant may target different wear/production balance.

Both options are produced via steel stock preparation followed by machining to the required shank diameter (D), tip geometry, and polishing for guidance surfaces. Heat treatment is selected to reach the required service hardness and dimensional stability for repeated alignment; final hardness is chosen to balance wear resistance against toughness to avoid chipping at the tapered point.

Select dimensions by matching the pilot interface to the receiving bushing or corresponding locating feature in your mold/tool. Use the D (shank dia.) range of 10–40 mm and confirm that the mating hole/guide bore in the die base or plate can accommodate the shank while maintaining controlled clearance.

Then choose the tip geometry by selecting the required P (tip diameter) in the range of 1.45–30 mm. The tapered tip improves centering during approach, but the tip diameter and point length must still fit within the guidance envelope of the mating components.

• Choose L1 (point length) from 19–62, 19–92, 25–102, or 30–102 mm based on how far the tip must engage before load transfer.
• Choose L (overall length) from 80–110, 80–140, or 80–150 mm to ensure correct protrusion without bottoming.

Because exact tolerances depend on the mating tooling design, specify a fit/clearance plan between shank diameter D and the guide bore to prevent binding while preserving repeatability.