Ball Lock Ejector Punches - Heavy Duty, Inch

Ball-lock ejector punches are used in injection mold tooling where reliable part ejection must be maintained over high press-cycle counts, especially in deep-cavity or high-normal-force applications. The heavy-duty ball-lock geometry provides robust retention and prevents punch shift, supporting stable stroke-to-cavity alignment during ejection.

• Automotive connector and bracket molds: Use these inch-configured punches with the appropriate tip shape (e.g., X, R, K, O) to match ejector contact profiles while benefiting from the XAN DayTAN™ coating for improved durability under repeated loading.
• Consumer appliance housings: In molds with demanding ejection forces and frequent maintenance intervals, the coating helps manage wear at the punch tip interface, supporting consistent ejection performance.
• Industrial die work with mixed part geometries: Select the tip shape set (H, J, K, L, N, V, X, Y, Z) to tune contact area and reduce stress concentrations for the specific part undercut/texture.

These heavy-duty ball-lock ejector punches are offered in M2 or PS4, supporting different performance balances for die work. M2 (a high-speed steel) is typically chosen for its strong wear resistance and ability to maintain hardness under repeated tool usage, making it suitable for abrasive or high-cycle ejector contact.

• PS4: Commonly selected where good toughness and stable performance are needed; it can be advantageous when durability must coexist with resistance to edge chipping.
• Hardness / heat treatment: The provided product data specifies available materials (M2, PS4) but does not list exact heat treatment condition (e.g., quenched & tempered, nitrided) or target hardness in HRC, so final hardness should be confirmed with the specific part/option.
• Trade-off: Higher wear resistance typically comes with increased sensitivity to brittle behavior if heat treatment/toughness is not balanced; selecting the material and tip geometry together helps manage this.

Select the correct punch option by matching both the shank diameter and the coded point length to your core/cavity and die shoe stack-up. The shank diameter D is specified from 37 ~ 125 in, so start by verifying the required clearance and fit in the guide bushing or rail.

• Tip shape: Choose among H, J, K, L, N, O, R, V, X, Y, Z based on the ejector contact pattern needed for the part surface and undercut geometry.
• Point length / overall length: Standard point length & L ranges are coded inch options: 250 ~ 500, 250 ~ 600, 275 ~ 600, and 300 ~ 600 (note: multiple coded length variants are listed, including B, C, and D point-length ranges).
• Fit and tolerances: Use the diameter P (0.062 ~ 1 in), W (0.062 ~ 0.5 in), and R (0.007 ~ 0.007 in) only when your application requires these features; otherwise, ensure the selected option keeps safe clearance in the die pocket and does not constrain punch travel.