Inch Ejector Punches with XNM Coating

In progressive and transfer press tooling, this type of inch ejector punch is used to drive parts out of die cavities while maintaining repeatable alignment through cycles. The variant with XNM coating is particularly suited for higher-wear environments where punch-to-die contact and sliding abrasion can degrade performance over time.

• Automotive and appliance press dies: Use ejector punches to stabilize ejection of stamped components. The coating helps reduce surface wear during long production runs where frequent cycling is expected.
• Consumer/industrial component housings: For housings or brackets requiring controlled part release, select the appropriate tip shape (H, J, K, L, N, O, R, V, X, Y, Z) to match die contact points and prevent gouging.
• Precision alignment in multi-station tooling: The inch shank diameter range supports consistent installation within standard punch tooling systems, helping maintain uniform ejection height across stations.

By matching tip geometry and length codes to the die design, engineers can balance ejection force paths with durability needs.

The provided specifications focus on inch-format geometry and XNM coating, but no steel grade, heat-treatment state, or base hardness (HRC) is explicitly listed. As a result, material property claims such as specific wear/toughness trade-offs, substrate hardness, or whether the punch is quenched & tempered, nitrided, or pre-hardened cannot be stated from the available data.

• XNM coating role: Designed to improve surface durability and wear resistance during punch-to-die rubbing and repeated press operations.
• Tip geometry impact: Selecting tip shapes (H, J, K, L, N, O, R, V, X, Y, Z) affects contact area and load distribution, which influences how quickly surfaces experience abrasion.

If you share the substrate material/heat treatment and target hardness, the page can be updated to include grade equivalency (e.g., SKD61/H13, SKH51/M2) and accurate HRC-based guidance.

Selection starts with matching the punch shank diameter to the guide and tooling bore system. For this series, the D (shank dia.) range is 18 ~ 125 in, so choose the diameter that fits your press die and retaining components with the required functional clearance.

• Tip shape: Pick from H, J, K, L, N, O, R, V, X, Y, Z to align the contact footprint with the part ejection interface and reduce localized stress.
• Length selection: Use the point length codes for Standard [S] B & L = 150 ~ 250 (coded inch). For Alternate [B], C, and D/E variants, lengths span up to 150~600, 175~625, 225~650, 250~700 depending on the code set.
• Critical dimensions: Match P (0.05 ~ 0.687 in) and W (0.062 ~ 0.312 in) to your die contact geometry; keep tolerances consistent with your assembly and ejection clearance.

When integrating across multiple stations, verify that the chosen length code achieves the required ejection stroke and that fits in the tooling system account for manufacturing tolerances.