Ball Lock Ejector Punches - Light Duty, Metric, XNAD Coating

These light-duty metric ball-lock ejector punches are used in injection molding and die-set tooling where repeatable part release depends on stable ball-lock retention during stroke cycles.

• Automotive connector and interior trim molds: The point geometry larger than the shank helps maintain controlled ejector engagement, while the XNAD coating reduces wear for consistent ejection in high-cycle production.
• Appliance and consumer product housings: Metric sizing and the compact light-duty form factor make them suitable for die inserts that require clean, reliable knockout without over-sizing the ejector system.
• General die-set applications for die inserts: The build-to-print compatibility approach supports integration into existing daylight/plate layouts, improving serviceability and maintaining dimensional match during tooling refresh.

Use this variant when wear resistance and long-term punch performance under frequent ejection are primary concerns.

The provided specifications focus on geometry and coating performance; the exact steel grade and heat treatment state are not listed in the input data. For engineering planning, treat this punch as a coated light-duty ejector intended to improve durability under repeated press cycles.

• XNAD coating: Designed to enhance wear resistance so the working edges and ball-lock interface keep consistent function over time.
• Hardness/toughness trade-offs: In coated ejectors, wear resistance is improved while impact resistance remains sufficient for normal ejection loads; excessive overloading can still accelerate edge wear or ball-lock wear.
• Manufacturing process: Typically involves precision turning/finishing for shank diameter D, controlled point length L1, and subsequent coating application to form the XNAD wear surface.

If you need hardness (HRC) or a specific steel equivalent, confirm the steel datasheet for the exact series code before final design freeze.

Select the ejector punch dimensions by matching the shank and tip features to your cavity/core knockout design and the ball-lock receiver in the die set.

• Shank diameter (D): Choose from 13, 16, 20, 25, 32 mm to align with the corresponding mounting/bushing openings and ball-lock fit.
• Overall length (L): Use the fixed range 80–100 mm so the punch can complete full stroke without bottoming in the ejector plate system.
• Point length (L1): Fixed at 19–30 mm; match this to required engagement depth for stable ejection.
• Geometry parameters (P, W, R): Confirm the correct variant within P = 13.1–32 (or 16.1–38, 20.1–40, 25.1–44, 32.1–50), W = 1.57–27.8, and R = 0.2–16 up to 0.2–25 depending on the selected tip shape (H/J/K/L/N/O/R/V/X/Y/Z).

Because ball-lock retention depends on local fit, verify receiver clearance and knockout timing against your die-set tolerance stack; keep dimensional matching tight around D and the ball-lock point interface.