M2 Steel Ball Lock Regular Ejector Punches

Ball-lock regular ejector punches are used in die and mold bases where ejector stability directly impacts part quality and cycle reliability. The ball-lock retention geometry is especially valuable in high-cycle automotive connector and sensor housing tooling, where repeated ejection can otherwise cause ejector movement or misalignment.

In heavy-duty forming and press tooling, these punches support consistent workpiece ejection while maintaining alignment under shop conditions. Their M2 steel construction provides robust wear resistance for contact surfaces exposed to repeated sliding and impact loads.

For multi-cavity die sets that demand repeatable ejection timing, the optimized tip and shank geometry helps deliver stable ejection behavior across cavities, reducing the risk of partial ejection or surface marking.

• Ball-lock retention improves stability in assembled die tooling
• M2 steel balances wear resistance for durable ejection performance
• Available tip shapes (H, J, K, L, N, O, R, V, X, Y, Z) help match part geometry

This ejector punch variant is offered in M2 steel, a high-speed tool steel widely selected for wear-prone tooling contacts. In practical mold and die work, M2 is typically supplied in a hardened and tempered condition to achieve high surface hardness while retaining usable toughness for impact and cyclic loading.

• M2 steel (typical): high hardness and strong wear resistance for repetitive ejector action; toughness can be lower than tougher grades, so careful support and alignment matter.
• PS4 option: provided as an alternate material choice in the range; it may be selected when project requirements prioritize different toughness/wear balance versus M2.

Tip geometry and contact conditions often drive the final material selection: choose M2 when abrasion and sustained ejection contact are dominant, and consider the PS4 option when you need a different trade-off for the expected load pattern.

Select the ejector punch size by matching the shank diameter (D) and overall length (L) to the ejector system in your mold or die. From the provided specifications, choose D = 10 ~ 40 mm and confirm that it fits the corresponding guide/retention bore with the intended clearance for smooth travel.

Next, set the required working depth using the point length and overall length. Available ranges include L1 (point length) = 10–19 mm, 13–25 mm, or 19–30 mm, and L = 63–125 mm, 71–125 mm, or 80–125 mm. Use L1 to control how far the tip penetrates toward the part, and use L to ensure full engagement with the ejector train and proper protrusion limits.

• Select tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match part surface and ejection location
• Verify P = 1.5 ~ 12 mm and W = 1.5 ~ 14 mm against available contact geometry
• R is listed as 0.2 mm; account for this small radius when predicting contact stress and marking risk

For fit, ensure the selected D and the mold’s guide bore provide stable motion without binding; use your standard mold tolerancing practice for sliding components.