Metric Ball Lock End Retainers - Ultra-Compact for Light Dut

These ultra-compact metric end retainers are used in light duty die tooling to secure ball lock punches and keep them positively seated during repeated press cycles. In practice, they are typically paired with matching ball lock punch assemblies so the punch can be installed, indexed, and removed quickly for maintenance.

• Progressive or turret press stations: Helps maintain consistent punch retention and repeatable working height when parts require reliable forming features with moderate loads.
• Small stamping and appliance/consumer components: The compact footprint improves spacing in tight die blocks where conventional larger retainer hardware would reduce tool layout flexibility.
• Die maintenance and fast changeovers: Supports routine punch replacement by providing stable retention for the punch interface while reducing setup variance.

Because this series is designed for metric, light duty systems and is matched to applicable punch diameters in the 10–32 mm class, it suits applications that prioritize fast serviceability and dimensional consistency over heavy-duty loads.

The provided product metadata does not specify a steel grade, heat treatment state, or hardness (HRC). As a result, no definitive statements can be made about whether this retainer is pre-hardened, quenched & tempered, or surface treated (e.g., nitrided), nor about its wear resistance vs. toughness trade-offs.

For engineering compatibility, confirm the actual material specification from the manufacturer datasheet for the exact series 250000002278 and the selected punch diameter class. If multiple materials are offered for the same form factor, selection typically depends on expected load, contact conditions at the ball lock interface, and desired resistance to fretting/wear during repeated insert/remove cycles.

• Action: Request material grade and hardness for accurate procurement and performance validation.
• Fit consideration: Material choice affects dimensional stability and long-term retention at the punch interface.

Select the retainer by matching its applicable punch diameter (D) to the ball lock punch you will lock in position. This series provides metric options for D = 10, 13, 16, 20, 25, or 32 mm; using the correct diameter class is critical for reliable engagement and stable retention.

• Step 1: Identify the installed ball lock punch diameter and confirm it is within the intended metric class.
• Step 2: Choose the corresponding retainer option with the same D value to ensure the lock interface seats properly.
• Step 3: Verify overall stack-up against your die block design (height/clearance at the punch interface) to avoid interference in compact die layouts.

Tolerance details are not included in the provided data, so treat diameter matching as the primary selection criterion and validate fit using your press tooling drawings or supplier fit guidance for the specific punch-retainer pairing.