DIN Standard Steel Ball Lock Pilot Punches - Round Tip

Ball lock pilot punches with a round tip are used in injection-related die tooling where repeated alignment accuracy is critical—especially in progressive stamping and blanking stations that feed and locate parts under load. The rounded point centers incoming workpieces, helping reduce positional drift during punching cycles.

• Progressive die alignment: Use for station-to-station guiding where the pilot must consistently locate thin or irregular blanks; this variant’s heavy-duty round-point geometry supports stable centering before the punch enters.
• Automotive connector and bracket housings (die sets): Suitable for high-throughput tooling requiring robust guiding to maintain hole-to-feature registration across large production runs.
• General die-set buildouts for precision punching: The metric compatibility supports streamlined die construction and consistent interoperability with other DIN-standard components.

This series is available in M2 and PS4 steel, selected to balance wear resistance and toughness for guided punching. M2 (AISI M2 equivalent) is a high-speed steel known for strong hot/wear performance and higher hardness after heat treatment, making it suitable for longer runs where tip wear and edge integrity matter.

• Hardness (HRC): Exact HRC values are not provided in the supplied data; final hardness depends on supplier heat treatment and downstream grinding/polishing.
• Wear vs. toughness trade-off: Harder conditions generally improve abrasion resistance at the expense of reduced toughness under shock loading.
• Manufacturing process: Typical production involves precision turning/grinding of the shank diameter (D) and point length (L1), followed by heat treatment and finish grinding to achieve accurate fit with the ball-lock system.

If you need specific hardness targets (HRC) or heat-treatment condition (e.g., quenched & tempered), confirm against the material certificate for the chosen option.

Select the pilot punch dimensions by matching your die’s core/cavity locating requirements to the available shank and point geometry. Start with D (shank dia.), which in this series ranges from 10 to 40 mm; choose the diameter that fits the corresponding guide bore/housing in your die set with the required clearance for a ball-lock interface.

• Point Length (L1): Available in 12–21 mm, 15–27 mm, or 21–32 mm. Pick L1 based on how much engagement you need for reliable workpiece centering before the punch action.
• Total Length (L): Offered across multiple ranges: 65–112, 65–127, 73–127, 92–127, and 112–127 mm. Select L to ensure full guiding travel and safe stack-up length for your press stroke and die height.
• P dimension: Ranges 1.45–29.95 mm; use this to align with the ball-lock engagement geometry.

Because tolerances are not specified in the provided data, verify your die bore size and ball-lock clearance requirements against your engineering drawings before final selection.