SKD11 Equivalent (D2) Ball Lock Punch Blanks - Wrench Flat

These ball-lock punch blanks with a wrench-flat interface are used in precision injection mold tooling wherever repeatable tool positioning is critical during machining and blanking. The wrench-flat seating feature helps maintain stable orientation when installing into ball-lock systems, supporting consistent cavity/core blanking results and reducing misalignment-related wear.

• Ejector pin and shoulder tooling: Select the “ejector with wrench flat” or “shoulder with wrench flat” type to build reliable ejector/shoulder tool blanks in molds, especially when multiple tool segments must index accurately during setup.
• High-cycle blanking operations: The SKD11 equivalent (D2) option is suited for production tooling that experiences frequent punch/blanking contact, where wear resistance directly impacts dimensional stability.
• Tooling for compact precision parts: Use smaller shank diameters (10–16 mm) for tight layout molds; use larger sizes (20–32 mm) for sturdier setups that benefit from increased shank cross-section.

This series is offered in two tool-steel options: SKH51 equivalent (M2) and SKD11 equivalent (D2). SKH51 (AISI M2) is a high-speed steel grade typically selected when a balance of hardness and cutting performance is required, while SKD11 (AISI D2 equivalent) is a high-carbon, high-chromium die steel chosen for strong wear resistance in blanking/punch applications.

• SKD11 equivalent (D2): Known for high wear resistance; hardness is typically specified and maintained in the high-HRC range after proper heat treatment.
• SKH51 equivalent (M2): Offers toughness/thermal-capability benefits versus many die steels, but may trade some wear-focused performance depending on tempering level.

In general production practice, blanks are machined in a heat-treated state and then finished to final size; final hardness is achieved via quench-and-temper (and/or temper adjustments) consistent with the selected grade, with wear resistance improved by optimized heat treatment and finishing conditions.

To select the correct blank dimensions for mold tooling, start by matching the shank diameter D and overall length controls to your ball-lock toolholder and the cavity/core assembly stack-up. Available shank diameter options are D = 10, 13, 16, 20, 25, 32 mm.

• Choose L (L dimension): Use L = 71–100 mm for the longer configuration or L = 63–90 mm for the shorter configuration, depending on the required projection and clearance in your mold.
• Verify LC (full length alteration): Ensure LC = 60–100 mm (long-range) or 50–90 mm (short-range) aligns with how much length adjustment your setup expects.

When integrating into ejector or shoulder tool blanks, confirm that the selected type (ejector with wrench flat or shoulder with wrench flat) mates correctly with the ball-lock indexing surface to preserve alignment. Tolerance and fit are governed by your mold’s ball-lock interface and toolholder specifications; keep dimensional checks on D and the relevant length parameters prior to final assembly.