Seco 02565455 Lh Dcln Indexable Turning Toolholder

Product Description

The SECO 02565455 is a left-hand DCLN-style indexable turning toolholder designed for external turning operations on CNC lathes and manual turning centers. Built from steel with a 0.75 inch square shank and an overall length of 4.5 inches, it uses a clamp-lock insert holding method to secure negative-rake CN-style inserts at a rake angle of -6 degrees. A 95-degree lead angle positions the cutting edge for stable, chatter-resistant cuts. Licensed HVAC techs, plumbers, and machinists working in metalworking trades will recognize this as a workhorse toolholder suited for medium to heavy turning passes across a broad range of workpiece materials.

This toolholder is intended for turning applications on a wide range of workpiece materials, including steels, stainless steels, cast irons, non-ferrous metals, heat-resistant superalloys, and other universal material groups. The left-hand cutting direction makes it the correct choice for applications that require right-to-left tool travel. It accepts CN..43. family inserts, giving shops flexibility in insert grade and geometry selection for roughing, semi-finishing, and finishing passes.

Key Features

• Left-hand cutting direction with 95-degree lead angle for stable entry and exit
• Negative rake geometry at -6 degrees for increased insert edge strength on interrupted or heavy cuts
• Clamp-lock insert holding method for secure, repeatable insert seating
• 3/4 inch x 3/4 inch square steel shank fits standard lathe tool blocks and quick-change systems
• Compatible with CN..43.. insert family including CNGA, CNGP, CNMA, CNMG, CNMM, and CNMP geometries
• Universal primary workpiece material rating covering material groups H, K, M, N, P, and S

Compatibility

Accepts CN..43.. series inserts, including CNGA, CNGP, CNMA, CNMG, CNMM, and CNMP styles with a 1/2 inch inscribed circle. Compatible insert size code is CN43.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the machine spindle before seating or replacing inserts. Ensure the shank is fully clamped in the tool block or turret with sufficient overhang minimized to reduce vibration. Follow the machine tool manufacturer and insert manufacturer torque guidance for clamp screws when tightening the insert clamp.