Ball Lock Retainer Accessories | Inch & Metric

Ball lock retainer accessories are used inside injection mold tooling and automated fixtures where a repeatable “ball detent” retention mechanism is required. They are well suited for setups that must retain pins, lifters, or removable inserts under vibration and intermittent handling, while still allowing controlled release during maintenance.

• Automotive connector and sensor housings: Configure compatible backing plugs, balls, and springs to match the applicable retainer type and diameter (e.g., the HRT/LRE/LRT families listed in the code). Heavy-duty variants help maintain retention consistency through cycle-to-cycle load changes.
• Medical device housing molds: Use light-duty or standard duty component sets to achieve stable locking with minimal force needed for service removal. The inch/metric availability supports sourcing standardization across global sites.
• Die-cast/press tooling and insert assemblies: Pair retainer nuts, bolts/screws, and selected spring types (standard/booster/extra heavy duty) to tune retention response for heavier inserts.

Choose the accessory set that corresponds to the target retainer type and D value to ensure functional compatibility and reliable engagement depth.

The provided specification data for this series focuses on component type (backing plugs, balls, springs, bolts/screws, drill bushings, dowel pins, retainer nuts, tools) and duty (light duty / heavy duty / heavy duty). No steel grade, hardness (HRC), or heat-treatment state is specified in the input, so the exact metallurgical properties cannot be stated from the supplied metadata.

For mold engineers, the key selection lever in this product line is mechanical duty tuning: selecting the correct spring variant (e.g., Standard Spring, Booster Spring, Extra Heavy Duty Spring) affects compression force and resistance to loss of retention. In general terms, higher-duty springs improve wear and load capacity at the cost of higher assembly and release forces.

• Pre-hardened / quenched & tempered: Not specified for this series in the provided data.
• Nitriding: Not specified for this series in the provided data.
• Comparison: Duty level selection (light vs heavy) is supported by the data; material grade comparison is not.

Selection is driven by matching the retainer type and the corresponding D value in the product code. This series lists both inch/metric compatibility and many “applicable retainer type & D” combinations, totaling 43 for inch/metric variants and 26 for the D(mm) list.

• Step 1 — Choose system standard: Select whether your mold assembly uses Inch, Metric, or Inch / Metric compatible components.
• Step 2 — Match the retainer family: Use the retainer type (examples from the list include HRT37, LRE25/LRS25, LRT25/LRS37, HRT50/LRT50, HRT62/LRT62).
• Step 3 — Match diameter (D): For metric codes, choose the listed D(mm) family such as BRT10/CRT10/NRT10/TRT10, up through entries like BRT40/NRT40.
• Tolerance/fit considerations: The data provided does not specify dimensional tolerances for these accessories, so confirm fit against your existing retainer housing geometry and any drawing-based clearance requirements before final assembly.

Because component types vary (balls, springs, backing plugs, nuts, tools), ensure the chosen component set corresponds to the same retainer type/D value used in the core cavity or insert retaining feature.