Light Load Ball Lock End Retainers

In injection mold tooling, light load ball lock end retainers are used on ball-lock punch and die assemblies where compact packaging and repeatable retention are required. The single-bolt end format is suited to tight tool layouts, helping maintain secure lock-up during repeated production cycles.

Common scenarios include:

• Compact automotive and electronics connector molds: used with shaped punches or shaped button dies where space is limited and reliable retention of the ball-lock plug improves assembly consistency.
• Medical device housing and insert molding: supports stable punch retention in small features, reducing the risk of misalignment and maintaining consistent end-of-stroke behavior for light load operations.
• General-purpose light load punch assemblies: configured as body only + plug or as a set, enabling compatibility with standard plug + body ball-lock systems.

This variant is especially suited for light load punch applications and for setups that benefit from the backing plug support and positioning consistency provided by the dowel hole.

The provided product data does not specify a steel grade, hardness (HRC), or heat treatment condition for these retainers. For ball-lock punch systems, end retainers are typically manufactured from tool steels selected to balance wear resistance at the lock interface with toughness to withstand assembly loads and repeated cycling; however, the exact grade for this MISUMI series cannot be confirmed from the current specifications.

Heat treatment state (e.g., quenched & tempered, nitrided, or pre-hardened) is also not listed in the input data. As a result, material performance expectations should be validated against the manufacturer’s datasheet for the selected option (set vs. body only + plug).

• Recommendation: verify the material grade and target hardness for the corresponding option and D size before finalizing the tool design.
• Trade-off awareness: higher surface hardness generally improves wear resistance but can reduce toughness if not properly heat treated.

Select the retainer based on the applicable punch diameter D and the assembly style required by your ball-lock system. The provided D (applicable punch diameter) options are 10 mm, 13 mm, and 16 mm, so choose the retainer that matches the punch diameter used in your core/cavity tooling.

Next, confirm the component configuration:

• Set: use when you want the complete packaged assembly for the end retainer.
• Body only + Plug: use when the punch assembly is being built from separate components and you need to pair the body with the correct plug.

To match mold cavity/core requirements, ensure the retainer’s D aligns with the punch for shaped button dies or shaped punches, and that the housing space supports the space-saving single-bolt fixing. If your design relies on repeatable positioning, take advantage of the backing plug dowel hole to improve alignment consistency between plug and body during assembly.