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The Cimco 201200 step drill bit is a single-piece cutting tool designed for drilling with right-hand rotation. It features a stepped diameter profile that allows progressively larger holes to be made with a single tool, reducing tool changes and setup time. The bit is intended for use in common drilling operations where gradual hole enlargement, clean edge formation, and controlled chip evacuation are required.

Advantages

The stepped geometry enables multiple hole sizes from one tool, saving time and simplifying operations. Being a single-piece construction provides rigidity and consistent concentricity during drilling. Right-hand rotation design matches standard drill press and handheld drill configurations. The tool is suitable for producing smooth hole edges and helps reduce burr formation compared with repeated reaming or multiple twist drills.

Suitable for

Key specifications

How to use

Secure the workpiece firmly and mark the drilling position. Use appropriate clamping and, if necessary, a center punch to prevent walking. Select a suitable drilling speed based on material hardness and machine capability. Align the step drill bit with the marked point and apply steady feed pressure while maintaining tool alignment. Progress through the stepped diameters until the required hole size is achieved. Retract the bit periodically to clear chips and avoid overheating; use cutting fluid where recommended for the material.

Recommendations

Use correct drilling speeds and adequate clamping; for thin or soft materials run at higher speeds with light feed, and for harder materials reduce speed and apply cutting fluid to prolong tool life and improve hole quality.