ISO Standard Steel RX Coating Ejector Punches with Locating Dowel Holes

RX-coated ejector punches with locating dowel holes are used inside precision injection molds where ejector alignment directly impacts part release accuracy. The locating dowel holes support repeatable center guidance during assembly, helping engineers maintain positional stability under high cycle loads.

Common scenarios include:

• Automotive connector and housing molds: Use the standard or spring reinforced type for dependable ejection while the RX coating supports wear resistance at the punch/cavity interface during long runs.
• Appliance and consumer device housings: Tip options (round, rectangle, oblong, and double-flatted forms) help match contact geometry to gate/runner layouts, while stable fit reduces misplacement risk during tool start-up.
• Medical device components: The dowel-hole locating feature improves assembly repeatability, supporting consistent ejection accuracy for tight-tolerance parts.

This variant is suited when precise punch fit and guided assembly alignment are required to protect mold geometry and keep ejection performance consistent over time.

This series specifies ISO Standard Steel with an RX coating applied to the ejector punch working surface. While the exact steel grade and coating thickness are not provided in the data, the engineering intent is clear: the base steel provides structural toughness for punching loads, and the RX coating improves surface wear resistance for repeatable ejection.

• Heat treatment state: Not stated in the provided specifications; however, ISO standard steel ejector components are typically supplied in a hardened/tempered condition suitable for mold service.
• Wear vs. toughness trade-off: Harder, wear-focused surface behavior from the RX coating helps resist abrasion, while the steel core supports punch toughness to reduce risk of chipping or deformation.
• Manufacturing process: Produced as precision punches with integral locating dowel hole geometry for guided assembly and stable fit.

If you require a specific hardness level (HRC) or a nitriding/quenched-and-tempered condition, confirm the exact steel grade and heat-treatment certificate for your build before quoting.

Select dimensions by matching the ejector punch geometry to the mold cavity/core layout and the required ejection contact area. Start with the shank diameter D (10–45 mm) to ensure correct guidance within the ejector plate/bushing system.

• Tip geometry: Choose the tip shape (round, rectangle, oblong, double flatted round, radius rectangle) and size parameters P (3–35 mm), W (3–9 mm), and corner radius R (0.15 mm) to match part geometry and minimize stress concentrations.
• Length and travel accommodation: Use the L dimension ranges (70–120, 60–120, 80–120, or 100–120 mm) and confirm LC (34–72) and PC (2.8–30 mm) to align with available mold space and dimensional change requirements.
• Tip length B: Select B (L, S, X) for the required reach while maintaining clearance to surrounding tooling.

Because only dimension ranges are given (no explicit tolerances), verify fit by checking clearances against your ejector guide and plate hole tolerances in the mold design.