Ball Lock Ejector Punches Heavy Duty Inch XNA Coating

Ball-lock ejector punches with heavy-duty inch dimensions are used in progressive die tooling where parts must be released reliably at high cadence. The ball-lock mechanism improves retention in the die assembly, helping maintain consistent ejection stroke and reducing looseness during repeated punch cycles.

These punches are commonly specified for automotive connector and terminal manufacturing, where formed components require stable part ejection to prevent sticking, drag marks, or misfeeds. The variant’s XNA coating supports wear resistance under frequent sliding/contact with die steel.

• Progressive dies: steady ejection for formed metal or stamped plastic inserts.
• Precision die maintenance environments: designed for long service cycles and predictable teardown/realignment behavior.
• High-cycle punch operations: coating helps limit surface wear on the shank and working interface.

This product is offered in M2 and PS4 material options, letting engineers tune hardness, wear resistance, and toughness for the application duty cycle. M2 is a high-speed steel option (commonly used as an AISI M2 equivalent), selected for strong wear performance when punches see frequent cutting/impact and require good hot hardness at tooling temperatures.

• In the M2 option, expect a higher hardness baseline suitable for demanding, abrasive environments, with the typical trade-off of lower toughness compared with tougher steels.
• In the PS4 option, choose when balanced toughness and stable performance are priorities for repeated punch ejection cycles.

Regardless of steel choice, the XNA coating is applied to improve surface wear resistance. The exact coating thickness and the supplied heat-treat hardness are not specified in the available data, so hardness verification should be confirmed against the coating and heat-treatment lot documentation provided by the supplier.

Correct selection starts with matching the shank diameter D and the coded point length to the die assembly geometry. This series covers D = 37 ~ 125 in and uses coded inch lengths for the working point: 250 ～ 500, 250 ～ 600, 275 ～ 600, and 300 ～ 600 depending on the configuration.

• Choose the Jektole group (J4, J6, J9, J12) and tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to align with the required ejection interface.
• Match L (and where applicable B/C/D coded point length ranges listed in the spec table) to the available space in the die block and stripper/ejector layout.
• Confirm contact clearances using the provided geometry limits: P = 0.062 ~ 1 and W = 0.062 ~ 0.5, with R = 0.007 (fixed in the given data).

For fit in the die, treat shank diameter selection as critical; use the supplier’s drawing for the exact tolerance class for your die bore/guide system, since tolerances are not included in the provided metadata.