SHCL Type Mini Quill Punches

These SHCL-type mini quill punches are used in injection mold tooling and progressive-style forming stations where short, stable punch penetration is required. The round tip helps establish predictable shear engagement, while the single-stepped shank supports consistent seating in the quill system during repeated cycles.

• Electronics and automotive connector molds: Suitable for punching thin features such as insert windows or localized forming steps, where controlled punch contact reduces variation across cavity shots.
• Appliance and small-part brackets: Used to form or trim small stamped-like geometries within mold steel pockets, benefiting from the quill design’s stable guidance under load.
• Close-tolerance production tooling: The compact shank and selectable tip ranges (P) make it easier to match fine cavity/core requirements without oversized punch bodies.

The SKH51-equivalent hardened steel variant is selected for stable punching performance over long production runs, balancing wear resistance with reliable toughness for everyday molding cycles.

SHCL-type mini quill punches are manufactured from SKH51 equivalent (M2) high-speed steel, a grade known for high wear resistance during repetitive punching. As a hardened cutting tool steel, it is typically supplied in a hardened condition (quench & temper) to achieve stable hardness for prolonged contact and shear operations.

• Hardness: Hardened high-speed steel is generally specified in the high-HRC range (commonly about 62–66 HRC for M2/SKH51 equivalents), supporting durable edges under cyclic punching.
• Wear resistance vs. toughness: The high hardness improves edge retention and reduces tip rounding, while toughness is lower than more ductile steels—so proper support and correct punch seating are important.
• Manufacturing process: Tool-grade blanking followed by precision tip/grinding for the round tip and single-stepped shank, ensuring consistent seating and shear geometry.

If lower wear resistance steels were used instead, tip wear would accelerate on long runs; compared with tougher die steels, M2/SKH51 focuses on edge life for high-cycle punching.

Correct selection is mainly about matching the shank and tip features to the quill tooling and the cavity/core cutting profile. This SHCL series provides D (shank diameter) options of 1.6, 2.0, and 2.5 mm, and L (length) fixed at 25 to 50 mm (as listed for the series).

• Step 1 — Select shank diameter (D): Choose D to fit the quill bore and guide system. Using the wrong D can cause misalignment, poor seating, and inconsistent punch penetration.
• Step 2 — Choose tip dimension (P) set: Match P to the required punch face size with available ranges: 0.3–1.59 mm, 0.5–1.99 mm, or 1–2.49 mm.
• Step 3 — Verify length and offsets: L and LC (full length alteration) are specified as 25–50 mm. Use PC (tip dimension alteration) options of 0.3–0.5 or 0.5–1 mm to fine-tune the tip profile while keeping the shank geometry consistent.
• Tolerance/fit considerations: Ensure the chosen D and the quill guide clearance maintain smooth sliding and repeatable seating for stable punching results.