Seco 00043259 Indexable Turning Toolholder 5/8 Inch

Product Description

The SECO 00043259 is a neutral-hand, neutral-rake indexable turning toolholder in the SSDC style, designed for screw-lock insert retention. It accepts SC..32.51 series inserts with a 3/8 inch inscribed circle and holds them with a single screw for repeatable edge positioning. The shank measures 5/8 inch wide by 5/8 inch tall, with an overall length of 4 inches. Built from steel, this toolholder is suited for production turning operations where consistent insert seating and rigid clamping are required. The neutral cutting direction makes it usable for both left-to-right and right-to-left pass directions depending on setup.

This toolholder is intended for external turning applications on CNC lathes and manual turning centers. The neutral rake geometry and universal primary workpiece material rating make it appropriate for use across a broad range of materials, including steel, stainless, cast iron, aluminum, nonferrous alloys, and superalloys as indicated by material codes H, K, M, N, P, and S. It fits standard toolpost and block-style holders that accept a 5/8 inch square shank. Machinists and CNC operators in job shops, production facilities, and maintenance machine shops are the typical end users.

Key Features

• SSDC-style screw-lock insert clamping for secure, repeatable insert positioning
• Neutral hand and neutral rake accommodate flexible cutting direction setups
• Accepts SC..32.51 inserts with 3/8 inch inscribed circle
• 5/8 inch square shank fits standard toolpost holders
• Steel construction provides rigidity under interrupted and continuous cuts
• Universal material compatibility rating covers steel, cast iron, aluminum, stainless, and superalloys

Compatibility

Designed to accept SC..32.51 series indexable inserts with a compatible insert size code of SC325 and a 3/8 inch inscribed circle. The manufacturer catalog number for this toolholder is SSDCN103. No coolant-through capability; standard external coolant delivery applies.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. The machine spindle must be stopped and the toolpost fully de-energized before inserting or indexing any insert. Ensure the insert pocket and seating surface are clean and free of chips before tightening the lock screw. Do not overtighten the screw-lock fastener beyond manufacturer specifications; refer to the SECO toolholder documentation for the correct torque procedure.