SKH51 Equivalent Ball Lock Ejector Punches - Heavy Load, Wrench Flat

These heavy-load ball lock ejector punches are used in ball-lock die sets to drive consistent ejection of formed parts while maintaining positional stability under high press forces.

• Automotive connector & bracket forming: Employ when repeated blanking/piercing demands reliable punch guidance; the wrench-flat head improves handling during die setup so tooling can be tightened safely and consistently.
• Consumer electronics housing dies: Use for housings and covers where dimensional repeatability of ejection is critical; the SKH51-equivalent steel construction is intended to resist wear and help maintain stable forming/ejection cycles.
• Industrial fastener and small-part transfer dies: Suitable for demanding ejector stations requiring repeatable part removal; the heavy-load design helps sustain performance across repeated strokes.

The wrench-flat variant is particularly suited for maintenance and die changeovers, reducing risk during adjustment compared with round heads.

This series uses an SKH51-equivalent hardened steel formulation, selected for durable die performance in ejector punch duty where wear and repeated contact are expected. SKH51 is commonly treated as AISI M2-equivalent in terms of performance class for tool steels used in cutting and forming tooling.

• Wear resistance vs. toughness: The hardened-state performance prioritizes resistance to abrasive wear from punching/blanking contact surfaces, with the typical trade-off of reduced impact toughness compared to lower-hardness steels.
• Heat treatment state: Provided as a hardened-steel style performance configuration for consistent ejection repeatability (exact HRC value is not specified in the provided data).
• Manufacturing approach: Generally produced by precision machining of the shank and tip features, followed by hardening/tempering for dimensional stability during service.

Correct selection depends on matching the punch tip and shank geometry to the mold’s ball-lock plate interface and ejection clearance.

• Choose shank diameter (D): Select from 10, 13, 16, 20, 25, 32 mm to ensure proper guidance and adequate bearing surface through the die insert.
• Match overall length (L): Use 80–100 mm or 71–100 mm ranges as applicable to your stack height; verify the working length aligns with required ejection stroke.
• Set tip geometry: Tip shapes are available as Round, Rectangle, Oblong, Double Flatted Round, Radius Rectangle. Select the tip dimension parameters P (2.5–22 mm), B (L dimension: L, S), and corner radii R (0.15–15.95 mm depending on variant).
• Control alteration dimensions: Use PC (1–11 mm), WC (1–3.5 mm), and the fixed LC (47–99.9 mm) to fit the ball-lock engagement and clearance.

Where tight fits are required, base selection on the die/core positional requirements and confirm clearance allowances around the ball-lock interface; tolerance details are not provided in the input data.