Inch Standard Steel Ejector Punches (XCN Coating)

Inch standard ejector tooling such as close-space die inserts and progressive-press stations typically uses these ejector punches to drive blanks or formed parts out of cavities with consistent force transmission. The XCN-coated working surface is suited for applications where the punch face repeatedly contacts scrap, burrs, or hard die surfaces, helping maintain dimensional stability over production runs.

Common scenarios include automotive and appliance stamping, where ejector tips with specified shapes (H/J/K/L/N/O/R/V/X/Y/Z) are selected to match cut geometry and clearance. The inch standard shank diameter range (D 18 ~ 250) supports alignment in standard tool layouts, reducing risk of misfit in the close-space area.

• Die protection in tight stations: XCN coating supports stable wear behavior to reduce punch-to-die degradation.
• Production repeatability: consistent close-space interaction helps reduce variation between cycles.
• Variant matching: tip shape and coded point/shank length options support fit to existing tooling conventions, including the Dayton Lamina part numbering workflow.

The provided listing specifies an Inch Standard Steel ejector punch family with an XCN coating, but it does not specify a steel alloy grade or heat-treatment state (e.g., pre-hard, quenched & tempered, nitrided). Therefore, material property values such as hardness (HRC) and microstructural targets cannot be stated from the available data.

What can be confirmed: the XCN coating is included to improve wear resistance at the working face, which is typically the highest-contact region during repeated punching. This coating-on-steel approach creates a practical wear-toughness trade-off: coating increases surface durability, while the underlying steel toughness must still support bending and impact loads from misalignment or material hardness variation.

• Coated performance focus: emphasis is on stable punching and reduced wear across runs.
• Heat treatment unknown: no grade, HRC, or tempering/nitriding parameters are provided in the supplied specs.

Use the provided inch-based dimensions to match the punch to your core/cavity ejector path and to maintain proper clearance in close-space regions. First select the tip shape (H, J, K, L, N, O, R, V, X, Y, Z) based on the knockout geometry and required contact profile during ejection.

Next match the shank diameter D (in) within 18 ~ 250. Then verify the ejector point length and overall effective length using the coded ranges: standard S point length B & L is 150 ~ 250, while alternate options include 150 ~ 400, 150 ~ 600, 175 ~ 625, 200 ~ 625, 225 ~ 625, 225 ~ 650, and up to 250 ~ 700 depending on the alternate group (B/C/D/E).

• Dimension-to-tool mapping: ensure the chosen coded point length aligns with die recess depth so the punch tip engages without bottoming.
• Fit considerations: confirm your tool-side bore/holder supports the selected D and maintains close-space clearance to prevent binding under press deflection.