Seco 02569288 Ddjn Indexable Turning Toolholder Dnmg 432

Product Description

The SECO 02569288 is a right-hand DDJN-style indexable turning toolholder designed for metal-cutting lathe operations requiring a negative rake geometry. Built on a 1 inch by 1 inch steel shank with an overall length of 6 inches, it accepts DNMG 432 inserts secured by a dual-clamp holding method for rigid, repeatable insert positioning. The negative 6-degree rake angle reduces cutting forces on hard-to-machine alloys and promotes long insert edge life across a broad range of workpiece materials. Licensed machinists and CNC turning center operators are the primary installers and users of this toolholder.

This toolholder is suited for general turning applications on CNC lathes and manual engine lathes in both production and job-shop environments. Its 93-degree lead angle and right-hand cutting direction make it well matched for longitudinal turning and shoulder-approach passes. The universal primary workpiece material classification covers steel, stainless, cast iron, non-ferrous, and high-temperature alloys, making this holder a flexible fixture in multi-material shops. No coolant-through capability is present, so external coolant delivery should be planned accordingly.

Key Features

• DDJN style with dual-clamp insert holding for maximum rigidity under interrupted cuts
• Negative 6-degree rake angle suited to hard and abrasive workpiece materials
• Accepts DNMG 432 inserts with a 3/8 inch inscribed circle
• 93-degree lead angle with right-hand cutting direction
• 1 inch by 1 inch steel shank fits standard square-shank tool blocks and turrets
• Universal material compatibility covering material codes H, K, M, N, P, and S

Compatibility

Designed as an OEM-style indexable turning toolholder accepting DNMG 432 inserts with compatible insert size codes DN43 and DN44. Verify turret or tool-block bore size matches the 1 inch by 1 inch shank before ordering.

Installation Notes

Installation and tool-offset setup should be performed by a qualified machinist or CNC operator. Ensure the lathe spindle is fully stopped and control is in E-stop or lock-out condition before changing inserts or mounting the toolholder in the turret. Torque the clamp screw to the insert manufacturer specification printed on the insert packaging. Confirm tool height, overhang, and lead angle orientation before taking a first cut.