Ejector Punches - Metric, XN DayTride® Coating

These metric ejector punches are used in injection and compression tooling where reliable ejection and punch guidance are critical. In typical setups, they support the ejector plate in press cycles that demand stable straight-line motion and consistent tip wear characteristics.

Common scenarios include:

• Automotive and industrial connector housings: use the metric shank to maintain alignment in die sets, helping reduce mismatch-driven abrasion during high-frequency ejection.
• Appliance and consumer component molds: the XN DayTride® coating is selected to improve wear resistance on the punch/eject contact zones, supporting long production runs.
• General production die sets with standard punch requirements: choose the appropriate tip shape (X, R, K, O, H and others) to match the part geometry and eject action.

This variant’s metric geometry plus the wear-focused XN DayTride® coating makes it well suited for tooling that experiences repeated sliding and localized contact at the point.

Material selection for these ejector punches is offered in M2 and PS, depending on the tool’s wear and toughness needs. M2 corresponds to a high-speed steel class (commonly referenced as AISI M2), which is known for strong wear resistance under repetitive contact. PS is a die steel option typically chosen when balancing machinability and performance for standard tooling.

Manufacturing and heat treatment follow standard hardened tooling practices for ejector/punch components:

• Quenched & tempered steels are used to achieve an optimized hardness/toughness trade-off for impact-prone ejection cycles.
• XN DayTride® coating is applied to the contact area to reduce abrasion during service.

When selecting between M2 and PS, engineers generally prefer M2 for higher wear-demand applications, while PS can be a practical choice where toughness and cost-effective tool life are prioritized. (Specific hardness in HRC is dependent on the ordered material state.)

Select ejector punch dimensions by matching the shank diameter (D), point length (L1), and overall length (L) to the die set layout and the required penetration to eject the part.

• Shank diameter D (mm): choose from 5 ~ 32 to fit the ejector guide/bushing geometry and maintain alignment.
• Point length L1 (mm): select 13 ~ 19, 19 ~ 25, or 25 ~ 30 based on the required tip reach into the die/part interface.
• Total length L (mm): choose from 40 ~ 80, 40 ~ 100, 50 ~ 100, or 63 ~ 100 to ensure correct stroke engagement without overtravel.

Tip shape (H, J, K, L, N, O, R, V, X, Y, Z) must match the eject contact geometry. Ensure clearance and fit consistency in metric guided systems; order dimensions are fixed within the listed ranges, while the tolerance performance will be controlled by the press-fit/guide design and the tool’s manufactured specs for that selected size.