Ball Lock Ejector Punches - Heavy Duty (M2 Steel)

These heavy-duty ball-lock ejector punches are used in metric injection and die casting tooling to provide repeatable part ejection and stable workpiece retention during cyclic production. The ball-lock retention helps maintain controlled positioning even under higher die loads, reducing the risk of drift that can cause ejection variation.

• Automotive and industrial housings: Suitable where frequent cycling and robust ejection are required; the M2 steel construction supports wear resistance for longer-running toolsets.
• Precision connectors and small components: The matched shank/point geometry supports controlled fit during assembly, helping maintain consistent ejection behavior and alignment across production runs.
• General metric die setups: Available tip shapes (H, J, K, L, N, O, R, V, X, Y, Z) allow designers to tailor the point profile to the part’s gate/land features while retaining reliable ball-lock holding.

For applications demanding durability and repeatability, this variant is suited because it combines ball-lock stability with M2 steel wear performance.

This product is offered in M2 steel (also listed as an available option: PS4). M2 steel is commonly used in cutting-tool and high-wear die components; in tooling, it is selected for its balanced wear resistance and toughness compared with more wear-focused grades.

• Material behavior: M2 supports stable performance under repeated impacts and sliding contact typical of ejector punch operation.
• Heat treatment (typical for die/ejector use): After machining, parts are typically quenched & tempered to reach the target hardness for service. Exact hardness/HRC is not provided in the input data.
• Trade-offs: Higher hardness improves wear resistance but can reduce toughness; M2 is selected to maintain a practical balance for cyclic die loads.

PS4 is available as an alternative, allowing selection based on your wear/toughness requirements, but specific properties and heat-treatment targets are not specified in the provided data.

Select the punch size by matching both the shank diameter (D) and the point geometry to your mold’s guide and ejector interface. This family covers D = 10–40 mm and multiple overall lengths depending on the selected option.

• Choose shank diameter: Pick D within 10–40 mm so it fits the corresponding punch bore/guide with the required assembly clearance. Maintain consistent fit to preserve alignment during ejection.
• Match point length (L1): Point length ranges include 10–19 mm, 13–25 mm, 19–30 mm, and 13–25 mm (listed as “13 ��� 25” in the source). Use L1 to control how deep the point engages the part for controlled ejection.
• Verify overall length (L): Overall length options are 63–125 mm, 71–125 mm, and 80–125 mm. Confirm L to avoid interference with die steel, lifters, or ejector return hardware.
• Tip profile selection: Choose the tip shape (H/J/K/L/N/O/R/V/X/Y/Z) based on part features; point profile should complement the contact surface to reduce stress concentration.

Tolerances are not specified in the input data; therefore, confirm with your mold maker’s standard for punch-to-bore fit and ensure mechanical alignment for ball-lock seating repeatability.