Seco CEL1212M10D External Turning Toolholder

Seco Tools is a world-leading precision cutting tools manufacturer supplying indexable turning inserts, milling inserts, turning toolholders, milling cutters, and solid carbide drills for CNC turning, milling, boring, and drilling operations in steel, stainless steel, cast iron, aluminium, titanium, and high-temperature alloys in engineering workshops and manufacturing environments across Australia.

Seco turning toolholders — in internal and external configurations, screw lock and multiple lock clamping systems, and a range of shank sizes and insert shapes — provide the rigid mounting interface between the CNC lathe turret and the indexable turning insert for precise, repeatable machining operations.

Where this product is used

Seco tool holder products are used in CNC and manual machining operations in engineering workshops, tool rooms, and production manufacturing environments where Seco precision cutting tools are specified for metalcutting operations.

• Internal turning toolholders in steel and solid carbide shank materials for boring and internal machining operations on CNC lathes with driven or static turrets.
• External turning toolholders in screw lock and multiple lock clamping systems for external turning, facing, and profiling with C, D, R, S, T, V, W, and other ISO insert shapes.
• Toolholders in metric shank sizes for direct fitting to CNC lathe turrets — confirm the shank size, insert shape, and orientation (Right/Left/Neutral) match the machine tool and insert specification.

Key specifications

Refer to the product designation code and title for full specification details including insert style, grade, tolerance, and dimensions.

Selecting the right option

Select toolholders by shank size and style (internal or external), clamping system (screw lock or multiple lock), insert shape, and cutting direction (Right or Left). Confirm the overall length and reach suit the lathe turret and component being machined. Internal toolholders are specified by minimum bore diameter — ensure the holder fits inside the bore. Contact AIMS for Seco toolholder selection assistance or for sizes and configurations not listed.