SKD11 Equivalent Steel Ball Lock Punches - Shoulder (Regular)

Ball lock punches are used in injection mold tooling to provide positive, repeatable retention between a punch and the mating die plate. This shoulder (regular) variant is well-suited for light-load progressive and forming tooling, where consistent seating during cycling is critical.

• Progressive forming die stations: Install the shoulder geometry to maintain alignment and reduce movement at the punch/die interface during repeated strokes, supporting stable forming of thin features.
• Industrial connector and housing features (low-to-medium load): The controlled retention helps maintain location accuracy for shallow bosses and functional cutouts, improving part-to-part consistency.
• Insert-style tooling for multi-step operations: Use in assemblies where easy indexing and secure retention are needed; the SKD11-equivalent wear-focused steel supports reliable operation over many cycles.

This series uses SKD11 equivalent tool steel, selected for good wear resistance and predictable performance in punch-and-die applications. SKD11 is broadly equivalent to AISI D2 in terms of tool-steel family and is commonly chosen when abrasive wear dominates.

• Heat treatment: Hardened punch stock in a quenched and tempered condition to balance hardness with toughness for cycling loads.
• Hardness & wear/toughness trade-off: Higher hardness improves resistance to wear and edge degradation, while tempered toughness helps limit chipping under intermittent impact or slight misalignment.
• Manufacturing process fit: The steel is produced for machining and finishing of precision tip/shank geometry, enabling controlled seating with the shoulder design.

Select dimensions based on how the punch seats and how much clearance is available in the die plate. For this shoulder (regular) punch, verify D (shank diameter) against available guide/bore capability and choose the appropriate L (L dimension) range: 71–90 mm or 63–90 mm depending on configuration.

• Tip geometry compatibility: Choose Tip Shape (Round, Rectangle, Oblong, Double Flatted Round, Radius Rectangle) and match the P (2.5–22 mm) and W (2.5–7 mm) to the cavity feature.
• Corner radius: Confirm R within one of the provided ranges (0.15–4.95 up to 0.15–15.95 mm depending on variant) to control stress concentration at the forming edge.
• Length alteration: Use LC (full length alteration) of 47–89.9 mm to fit stack height/tryout conditions.
• Tolerances/fit considerations: Pay attention to PC (tip dimension alteration) and WC (tip dimension alteration) steps (PC: 1.25–11 mm; WC: 1.25–6.99 mm) so the assembled punch/die clearance supports smooth cycling without binding.