Inch Ball Lock Pilot Punches Tapered Tip Heavy Duty XNP Coat

These heavy-duty inch ball lock pilot punches are used to establish repeatable part registration in progressive and transfer dies, where any pilot drift can translate into misfeeds, burrs, and scrap. The tapered tip helps with initial centering during die start-up, improving stability before full press cycles are reached.

• Automotive and appliance progressive blanking: Use them on locating stations that must maintain coaxial engagement through high-cycle production; the tapered entry reduces lateral sensitivity as material transitions onto the pilot.
• Fine piercing/blanking with tight positional control: Ball-lock style engagement supports consistent pilot location, helping stabilize successive operations such as piercing and forming in one feed strip.
• High-wear locating environments: The XNP coating is suited where punch-to-workpiece friction and surface wear can degrade pilot performance over time.

For these applications, the inch heavy-duty geometry range and selectable point/length options allow matching the pilot engagement depth to the die architecture.

This series is offered in M2 and PS4 material options, allowing selection based on the balance you need between wear resistance and toughness. M2 (high-speed steel) is typically selected for strong wear resistance and edge retention under repeated striking loads.

• PS4: Often chosen when you prioritize a toughness-focused balance for locating components that experience cyclic load and require stable performance without excessive brittleness.
• Heat treatment state: The product data specifies the available materials (M2, PS4) but does not provide explicit hardness (HRC) or a specific heat-treatment route (e.g., quenched & tempered, nitrided). Final hardness and treatment should be confirmed with the material/heat certificate for your selected variant.
• XNP coating: Regardless of base steel selection, the coating is designed to improve wear performance and promote smoother punch-to-workpiece engagement.

Compared across the options, choosing M2 generally trends toward higher wear performance, while PS4 is often selected for improved toughness behavior in demanding duty cycles.

Selection is primarily driven by the required shank diameter (D) and the point length/overall length that must provide correct engagement in the die. This series lists D = 37 ~ 125 in, and point/length combinations in coded inch ranges: 250 ~ 600, 250 ~ 700, 275 ~ 700, and 300 ~ 700 (with corresponding definitions for B, C, and point-length configurations).

• Match D to your pilot bore: Ensure the selected shank diameter fits the locating interface without binding; verify tolerances against your die bushing/pilot bore design.
• Match point length to engagement depth: Choose the point length range (e.g., 250–700 or 275–700) so the tapered tip reliably centers before full contact, while avoiding bottoming in the die.
• Check P dimension: The listed P = 0.083 ~ 0.999 should be aligned with your required positional geometry for consistent lock-up and registration.

Most dimensions in this catalog are variant-configurable within the specified ranges; lock in your cavity/core engagement depth first, then select the closest available point/length configuration.