Metric Ejector Punches XNT DayTiN® Coating

Metric ejector punches with the XNT DayTiN® coating are used in stamping and progressive die sets where parts must separate cleanly from the tooling after each forming cycle. Their straight-line, controlled punch geometry supports predictable ejection and reduces the risk of sticking or drag marks on the part surface.

In automotive connector and terminal stamping, repeated cycling and abrasive debris demand high wear resistance. The DayTiN® coating improves surface durability at the punch working end, helping maintain stable ejection force and alignment over long production runs.

For small-batch electronics housings and brackets, these metric punches fit common die standards and provide a consistent tip profile selection (H, J, K, L, N, O, R, V, X, Y, Z). Choosing appropriate shank diameters and point lengths helps ensure the punch reaches the correct ejection depth without excessive protrusion.

• Progressive dies: stable ejection under repeated cycles
• High-wear stamping zones: improved tool life via DayTiN®
• Metric die tooling: selectable tip shapes for controlled separation

This series is offered in M2 or PS steel options, with the XNT DayTiN® coating applied for wear reduction at the contact zone. M2 (a high-speed steel) is selected when toughness and wear resistance are both critical in punch service, particularly where abrasive scale or debris accelerates wear.

PS is typically chosen for applications emphasizing cost-effective tool life while still benefiting from the hard coating at the working surfaces. Both material choices rely on the coating system to improve surface durability, but they can differ in balance between wear resistance and toughness under cyclic loading.

• Coating state: XNT DayTiN® finished punches (surface-enhanced for the punch tip and shank working areas)
• Hardness: not specified in the provided data—selection is typically based on the steel/coating combination and required ejection duty
• Wear vs. toughness: M2 generally provides higher wear capability; PS may be preferable where toughness demand is moderate

Select the metric ejector punch dimensions by matching the required ejection depth, contact geometry, and clearance within the die set. Start with the shank diameter D from 5 ~ 32 mm to ensure proper alignment in the guide/bushing and to maintain stable straight-line ejection.

Next, choose the tip point length L1 from 13 ～ 19, 19 ～ 25, or 25 ～ 30 mm based on how far the punch must extend into the part separation zone. Then select overall punch length L from the available ranges (40 ～ 80, 40 ～ 100, 50 ～ 100, or 63 ～ 100 mm) so the punch fully engages during actuation while allowing correct return stroke.

• Pick tip shape (H/J/K/L/N/O/R/V/X/Y/Z) for the desired contact footprint
• Verify pocket/clearance using P (1.3 ~ 16 mm) and W (1.6 ~ 10 mm)
• Confirm corner radius R = 0.2 mm for consistent contact behavior

Tolerance/fit: match D to your die guide/bushing bore with the intended running clearance; this data sheet provides dimension ranges but does not specify tolerances—use your die standard for final fit.