Rittal AS 4055.746 stamping punch, round 14.0 mm, red

Rittal AS 4055.746 is a round stamping punch with a 14.0 mm diameter, finished in red and designed for creating consistent circular impressions in suitable thin metal parts such as busbars and enclosure panels. The tool is part of a stamping system that, together with appropriate dies, enables punching round holes from 6.6 mm to 21.5 mm in busbars, allowing clean, repeatable marks or openings during fabrication and assembly tasks.

Advantages

The stamping punch provides a precise 14.0 mm circular impression that helps ensure uniform marking and hole preparation across multiple workpieces. Its red finish improves visibility in workshop environments and the tool is compatible with a family of dies that cover a range of diameters for flexible use. The solid construction and tooling fit make it suitable for repetitive operations with consistent results.

Suitable for

• Punching round marks or starter holes in busbars and thin sheet metal
• Marking positions for drilling or assembly in electrical enclosures
• Workshop use for consistent identification and layout tasks

When it may not be suitable

This stamping punch is intended for use with compatible dies and in materials and thicknesses suitable for stamping; it is not designed for use on very thick or hardened steel where stamping would be ineffective or damage the tool. It is also not a finishing drill—further machining may be required to obtain fully finished holes or larger-diameter openings beyond the supported die range.

Key specifications

• Stamp shape: round
• Nominal diameter of impression: 14.0 mm
• Finish: red
• Suitable punched hole diameter range when used with dies: 6.6 mm to 21.5 mm (system range)
• Typical applications: busbars, thin sheet metal, enclosure panels

How to use

Install the punch together with the correct matching die according to the stamping system instructions, ensuring both components are clean and correctly aligned. Position the workpiece (for example a busbar or panel) between punch and die, clamp securely, and apply force using the appropriate press or hand tool recommended for the system. After stamping, inspect the impression or pierced hole and, if required, deburr or machine to final dimensions. Follow the manufacturer’s guidance for die selection and equipment settings.

What to consider before purchase

• Confirm compatibility with the die set and stamping equipment you plan to use
• Verify the material type and thickness of your workpieces are suitable for stamping
• Consider whether the 14.0 mm impression meets your marking or hole-size requirements
• Assess whether additional finishing (deburring or drilling) will be needed after stamping

Usage recommendations

Use the Rittal stamping punch with the correct die size for the intended hole diameter, secure the workpiece to prevent movement during stamping, and perform a test stamp on scrap material to confirm alignment and force settings before processing production parts.