M2 Steel Ball Lock Ejector Punches Wrench Flat

These ball-lock ejector punches with a wrench-flat are used in injection mold tooling where stable ejection depends on consistent punch guidance and strong retention. The wrench-flat head supports controlled gripping during mold setup, alignment checks, and maintenance, helping reduce handling variability that can affect ejection repeatability.

• Automotive interior/exterior components: Suitable for progressive or transfer die molds that require dependable ball-lock retention under heavy duty cycles; M2-grade wear resistance helps maintain straight guidance.
• Appliance and housing assemblies: Used when thick-wall or ribbed parts demand reliable ejection force transfer; the heavy-load punch guidance improves stability and reduces risk of sticking-related misalignment.
• Industrial connectors and brackets: Works well when designers need precise tip geometry options (round/rectangle/oblong and double-flatted forms) to match ball-lock features and mating surfaces.

This series specifies M2 tool steel, an alloy steel commonly selected for parts exposed to high sliding and contact wear in die and mold service. For heavy-load ejector punches, M2 is typically delivered in a heat-treated condition and used for its balance of wear resistance and toughness during repetitive cycles.

• Wear vs. toughness: Compared with lower-alloy steels, M2 offers higher wear resistance; however, it generally requires careful heat treatment and good alignment control to avoid excessive brittleness at edges.
• Manufacturing relevance: Wrench-flat geometry and grinding workmanship support consistent punch alignment and repeatability, which complements M2’s surface performance.
• Note on hardness: The provided data does not include an HRC value; hardness depends on the exact heat treatment state used for the punch.

Select the ejector punch size by matching the tip-to-cavity/core contact geometry and the shank dimensions that interface with your ball-lock retention system. Start with the D (shank diameter) option: 10, 13, 16, 20, 25, or 32 mm, then choose a compatible B (tip length) (L or S options) and confirm the full length alteration LC requirement falls within 47 to 99.9 mm.

• Tip geometry: Choose Tip Shape (Round, Rectangle, Oblong, Double Flatted Round, Radius Rectangle) and then set P (tip dimension) from 3 to 22 mm.
• Corner/edge fit: Specify the R (tip corner radius) according to your contact requirement (0.15 up to 15.95 mm depending on configuration) and select W within the provided ranges (e.g., 3–31.9 mm depending on the chosen form).
• Tolerance & fit: When you adjust PC (2–15 mm) or WC (2–2.99 / 3–5.99 mm), verify clearance and contact area in the cavity/core to maintain stable ejection without edge loading.