Seco 02569289 Lh Ddjn Turning Toolholder Dnmg 432

Product Description

The SECO 02569289 is a left-hand DDJN-style indexable turning toolholder with a negative rake angle of -6 degrees. It is built for external turning operations on CNC lathes and manual turning centers. The toolholder accepts DNMG 432 inserts and uses a dual-clamp insert-holding method for secure, repeatable insert positioning. The 1-inch by 1-inch square shank seats firmly in standard toolpost and turret blocks. With a 93-degree lead angle and an overall length of 6 inches, this holder suits a wide range of turning profiles where left-hand cutting direction is required. Installation is performed by qualified machinists or CNC setup technicians.

This toolholder is suited for turning applications across a broad range of workpiece materials, including steel, stainless, cast iron, non-ferrous metals, high-temperature alloys, and other materials corresponding to ISO material codes H, K, M, N, P, and S. It is designed for production and job-shop environments where consistent insert indexing and rigid clamping are priorities. The 1.65-inch head length and 1.25-inch back-of-bar to cutting-edge dimension suit standard turning setups requiring moderate reach and positive clearance geometry.

Key Features

• Left-hand cutting direction with a -6 degree negative rake angle for controlled chip formation
• Dual-clamp insert-holding method provides rigid, repeatable seating of DNMG 432 inserts
• 1-inch by 1-inch square shank fits standard lathe toolpost and turret block slots
• 93-degree lead angle suits shoulder-turning and profiling passes
• Universal material compatibility covers ISO codes H, K, M, N, P, and S
• Steel toolholder body provides durability under interrupted cuts and heavy feeds

Compatibility

Accepts DNMG 432 inserts with a 3/8-inch inscribed circle. Compatible insert size codes are DN43 and DN44. Coolant-through is not supported on this holder.

Installation Notes

This toolholder is installed and indexed by machinists or CNC lathe setup technicians. Power down and lock out the machine spindle before changing inserts or mounting the holder in the turret. Ensure the shank seating surfaces and turret pocket are clean and free of chips before tightening. Follow the machine tool manufacturer torque guidance for turret clamping screws; do not use clamping force beyond the holder manufacturer recommendations.