Quill Shoulder Punches - RW Coating

Quill shoulder punches with RW coating are used in precision punching stations where repeatability and stable positioning directly affect part edge quality. The single-stepped quill shoulder geometry helps keep the punch face aligned during successive strikes, supporting consistent shearing and reliable ejection in production tooling.

• Automotive connector and terminal stamping: The RW-coated working surface helps maintain durability under repeated punching loads, while the available tool steel options (including M2-equivalent) support longer service intervals.
• Appliance and housing sheet-metal forming: Use the shank and shoulder design to improve alignment in multi-hit operations, reducing variation from strike to strike.
• Small electronic bracket punching: Select compact shank diameters (D = 1.6, 2.0, 2.5 mm) and the required tip geometry (round, rectangle, oblong, double flatted round, radius rectangle) to match the cavity/core feature profile.

This punch series is offered in two tool steel options suited to different wear/toughness needs. SKH40 equivalent is provided as powdered high-speed steel, which is typically selected for its good wear resistance and stable performance in high-cycle punching. SKH51 equivalent (M2) is also available for applications that benefit from M2-type high-speed steel characteristics.

• Wear resistance vs. toughness trade-off: M2-grade options are commonly chosen for higher wear performance, while powdered HSS variants can offer good wear stability with effective performance across repeated strikes.
• Manufacturing/finish: The working end is finished with RW coating to further improve surface durability under typical stamping/punching loads.
• Heat treatment state: Tool steels are supplied in the usable cutting-tool condition for repeated punching; final hardness is determined by the selected steel and supplier heat-treatment practice.

Select the punch dimensions by matching the shank diameter, tip geometry, and working length to the die/punch assembly and the required cavity/core profile.

• Shank fit: Choose D = 1.6, 2.0, or 2.5 mm. The D tolerance is +0.005/0, m5, which should be coordinated with the guide/strip hole or bushing clearance to ensure smooth guidance without excessive play.
• Tip geometry: Pick the tip shape (Round, Rectangle, Oblong, Double Flatted Round, Radius Rectangle) and then select the tip dimensions within the available ranges for P and W (e.g., P ranges from 1 ～ 1.59 up to 1 ～ 2.49, and W ranges from 1 ～ 1.97 up to 1 ～ 2.47 depending on the variant).
• Length/stack compatibility: Select L = 30 ～ 60 (or 20 ～ 60 for the alternate L range), and LC/LCT/LMT alteration values of 20 ~ 40.1 mm to align the head thickness and total length requirements (T options: 3 or 5 mm).