Metric Ball Lock Ejector Punch Blanks - Light Duty

Metric light-duty ball lock ejector punch blanks are used during the build of punch-and-die tooling where controlled ejection and repeatable retention inside the punch die set are required. The ball lock geometry supports stable engagement in the die, helping reduce movement during cycling and assisting consistent stripping of formed parts.

• Automotive and appliance metal forming: Commonly selected as punch blank stock for light-duty forming stations that require frequent stripping between strokes. The metric shank sizes (D = 6 to 38 mm) align with standard tooling layouts to support proper stack-up and guidance.
• General fabrication press tooling: Ideal for routine punch die builds where engineers want a predictable punch blank selection across different die heights. Multiple length windows (e.g., L = 63–100 mm, 71–100 mm, 80–100 mm) help match the assembled stack height.
• Production support and maintenance builds: When replacing or standardizing punch assemblies, the group coding (J3M, J4M, J6M, J9M, J12M) facilitates compatibility with ejector/punch die components for efficient refurbishment.

The provided specifications for this product focus on metric dimensions and ball-lock ejector configuration; no steel grade, hardness (HRC), or heat-treatment state is listed in the input data. Because of that, material-property claims (e.g., wear resistance, toughness, or whether the blank is pre-hardened, quenched & tempered, or nitrided) cannot be stated reliably.

When selecting an ejector blank for a given press operation, engineers typically match the steel grade to the forming material load and required ejection life. Where multiple steel options exist in a catalog, the usual trade-off is higher hardness and wear resistance vs. reduced toughness, which can affect chipping risk under shock loading.

• Confirm the exact steel grade and heat-treatment in the datasheet for the specific series code before finalizing the die material standard.
• Use the provided dimension ranges to ensure mechanical compatibility while material is validated through documentation.

Select dimensions by matching the ejector punch blank to your die-set stack-up and the intended retention interface for the ball lock system. The shank diameter range for this metric light-duty series is D = 6 to 38 mm, which must correspond to the guide/bushing and alignment features in the punch assembly.

• Step 1 (Shank dia. D): Choose the D value within 6–38 mm that matches the die set’s bore/guide requirements to maintain alignment during cycling.
• Step 2 (Length L): Pick a length window that fits your assembled die height. Available L ranges are 63–100 mm, 71–100 mm, and 80–100 mm depending on the configured option.
• Step 3 (Group compatibility): Ensure the selected option belongs to the correct Jektole group (J3M, J4M, J6M, J9M, or J12M) so the retention geometry matches the rest of the punch die build.

Tolerance and finish requirements are not provided in the input; follow your die supplier standards for fit and ensure the installed working length clears the die opening without binding.