Punches with Key Grooves - RW Coating

This punch variant is used in injection mold tooling and progressive/transfer die sets where the punch must maintain consistent position through repeated cycles. The single-stepped shank with key groove mounting provides positive shank alignment, reducing rotation and helping deliver repeatable stroke and cutting performance.

• Automotive connector and terminal molds: Suitable for fine-forming and trim operations where tight punch-to-die alignment is required. The key groove alignment improves repeatability, while the RW coating supports longer wear life under abrasive contacts.
• Appliance and housings progressive dies: Common for multi-station forming where the punch head sees repeated impact and sliding against die steel. The controlled shank mounting geometry helps maintain location accuracy during high-volume runs.
• Medical device component forming: Where dimensional stability and predictable tool wear matter for consistent part geometry. The RW coating helps maintain cutting edges longer, supporting stable forming results.

Choose this shank geometry when you need reliable, non-rotational mounting performance in dies and tooling.

The listed materials are powdered high-speed steel and SKH51. SKH51 corresponds to an AISI M2-class high-speed steel, offering a balance of high red-hardness and wear resistance for cutting/forming punches.

In service, high-speed steels trade toughness for wear performance: higher hardness improves edge retention, but can reduce impact toughness compared with more ductile tool steels. With proper heat treatment (commonly quench and temper for HSS punches; exact process depends on the supplied grade/condition), the punch targets a stable hardness level typically in the ~HRC range used for HSS punches, maximizing tool life under abrasion and sliding contact.

• Powdered HSS: Refined microstructure supports improved wear uniformity.
• SKH51: Strong general-purpose HSS option for demanding punch applications.

The RW coating further enhances surface wear resistance, helping maintain dimensional stability over repeated cycles.

Select the punch size by matching the shank diameter (D), tip geometry, and length to your die cavity/core requirements. The shank diameter range is D = 3 ~ 16 mm with a tolerance of +0.005 / 0, m5, so verify compatibility with your guide/bushing ID and mounting pocket.

• Choose tip shape: Options are A, D, E, G, R. Confirm that your die cutting/formed feature matches the tip profile.
• Set tip dimensions: P = 1 ~ 10 mm, W = 1 ~ 5 mm, and apply allowance for PC (tip dimension alteration) = 0.5 ~ 5 mm where applicable to the ordered variant.
• Match length: Head/tip length parameter B is available as L, S, X. Overall L is offered in multiple ranges (e.g., 50–80, 50–100, 60–100, 40–80, 40–100, 60–80), with corresponding LC options (e.g., 27–79.9 up to 99.9).

For repeatable positioning in dies, ensure the key groove position (T) matches the die’s mounting geometry (available ranges such as 5.1–80 and 5.1–100). Use the supplied tolerances to maintain proper fit and prevent punch rotation.