M2 Steel Ball Lock Regular Ejector Punches

These ball-lock ejector punches are used in injection mold tooling and die work where repeatable part release is required but loads remain light-to-moderate. The ball-lock retention mechanism helps keep the punch properly located during cycling, supporting consistent ejection height and alignment.

• Small-forming and light-duty die applications: Choose this variant for routine press/tooling where stable positioning is more important than extreme wear life.
• Thin-gauge or delicate insert operations: The standardized point geometry and available tip shape options (H, J, K, L, N, O, R, V, X, Y, Z) help maintain predictable contact with the workpiece for forming/blanking.
• Metric die assemblies: Dimension ranges in shank diameter (D: 6–38 mm) and lengths (L: 63–100 mm) make it practical for metric tooling layouts and modular upgrades.

M2 steel is a good fit when you need dependable wear resistance for routine production cycles, while maintaining toughness adequate for light-duty ejection.

The primary option is M2 steel (high-speed steel), selected for its ability to resist wear at the elevated surface conditions that can occur during repeated punch ejection. Compared with PS4, M2 generally prioritizes wear resistance for tooling that sees regular cycling, while PS4 can be considered when you want an alternative material offering different toughness/processing characteristics for specific die environments.

• Heat treatment (typical for M2 tools): M2 is commonly quenched and tempered to balance hardness and toughness for punch applications.
• Hardness & trade-offs: Expect a hardness regime suitable for wear resistance (commonly in the HRC range for M2 tool steels), where increasing hardness can improve abrasion resistance but may reduce impact toughness if the work includes shock loads.
• Wear behavior: Ball-lock punch tips and contact regions benefit from the steel’s ability to maintain edge/pointer integrity during routine die use.

Final hardness and microstructure should be confirmed to your supplier’s heat-treatment procedure for the selected M2/PS4 option.

Start sizing by matching the punch to the core/cavity ejection layout and the ball-lock interface in your ejector system. Use the provided ranges to select the correct shank diameter and overall geometry so the punch is guided without excessive clearance.

• Choose shank diameter (D): Select D within 6–38 mm to match the guide bore size in your mold base or die plate.
• Confirm point length (L1): Available L1 ranges are 10–13, 10–19, 13–25, or 19–30 mm, which must suit the required engagement depth with the workpiece.
• Select overall length (L): Available L ranges are 63–100 mm, 71–100 mm, or 80–100 mm, ensuring correct stand-off and travel without bottoming.
• Match tip geometry: P and W control point dimensions with ranges P: 1.4–12 mm and W: 1.4–14 mm; select the tip shape (H, J, K, L, N, O, R, V, X, Y, Z) for the intended forming/contact.

Because tolerances and fit depend on the guide bore and ball-lock housing, verify the clearance/fit per your ejector guide spec and machine shop recommendations.