Rittal AS 4055.740 stamping punch, round 6.6 mm, red

Rittal AS 4055.740 stamping punch is a compact, handheld tool with a round 6.6 mm head finished in red. It is designed to produce a defined circular imprint or hole for marking, stamping and punching operations on electrical panels, busbars and thin metal components. The tool pairs with matching dies to enable precise round punches and is intended for workshop and on-site use where a small, repeatable circular opening or mark is required.

Advantages

This stamping punch delivers a consistent 6.6 mm circular imprint with minimal setup. Its compact, lightweight design supports easy handling and reduces operator fatigue during repeated use. The colored finish improves visibility in tool kits and on crowded benches. When used with compatible dies, the tool enables reliable round hole formation in busbars and similar materials.

Suitable for

• Creating defined 6.6 mm round imprints on panels and labels
• Punching round holes in busbars when used with corresponding dies
• On-site marking and stamping tasks in electrical assembly and maintenance
• Workshop use for component identification and repeatable marking

When it may not be suitable

This stamping punch is intended for making 6.6 mm round imprints and, together with dies, punching holes in thin conductive strips such as busbars. It is not suitable for heavy-duty metal cutting, thick structural steel, or applications that require larger diameter holes beyond the punch/die system range. For precision machining or high-volume automated production, alternative equipment may be more appropriate.

Key specifications

• Head diameter: 6.6 mm (round)
• Finish: red
• Form factor: handheld stamping punch
• Application: marking, stamping, punching in thin metal and busbars (with dies)
• Compatibility: designed to work with matching dies for round punches

How to use

Position the punch perpendicular to the workpiece at the intended mark or hole location. If punching a hole in a busbar, install the corresponding die in the die holder and align the workpiece between punch and die. Apply steady force or use an appropriate press following the die manufacturer’s instructions to create the 6.6 mm round imprint or hole. After each use, clean the punch head and inspect for wear; store in a dry place to prevent corrosion and maintain reliable performance.

What to consider before purchase

• Ensure the 6.6 mm head size matches your marking or hole diameter requirements
• Confirm compatibility with available dies for punching holes in busbars or other materials
• Evaluate material thickness and hardness of the workpiece to ensure the punch/die system is appropriate
• Consider whether handheld stamping is suitable versus a press or automated solution for your volume

Usage recommendations

Use the Rittal AS 4055.740 stamping punch with the correct matching die and secure, flat support for the workpiece. For repeatability and tool longevity, avoid using the punch on materials beyond the recommended thickness or hardness and perform routine inspection and light maintenance to preserve the 6.6 mm imprint quality.