Seco 00012698 Mdjn Indexable Turning Toolholder Rh

Product Description

The SECO 00012698 is a right-hand MDJN-style indexable turning toolholder designed for external turning operations on CNC and manual lathes. Built on a 1-inch by 1-inch square shank and measuring 6 inches in overall length, this toolholder accepts DN..43. series inserts and uses a Multiple Lock clamping system that combines a top clamp and locating pin for rigid, repeatable insert seating. The negative rake geometry and -6-degree rake angle are suited to interrupted cuts and harder workpiece materials where edge stability is a priority. Steel construction throughout provides durability in production turning environments. Installation is performed by qualified machinists or toolroom technicians.

This toolholder is appropriate for external turning on a broad range of workpiece materials including steels, cast irons, stainless alloys, non-ferrous metals, superalloys, and aluminum. The universal material compatibility rating covers ISO material groups H, K, M, N, P, and S, making it a versatile holder for shops running mixed-material production. The -3-degree lead angle positions the insert for moderate depth-of-cut applications and general turning passes. Compatible insert size codes are DN43 and DN44, with an inscribed circle of 0.5 inches.

Key Features

• MDJN toolholder style with right-hand cutting direction for standard external turning
• Multiple Lock system combining top clamp and locating pin for secure insert retention
• Negative rake (-6 degrees) geometry for edge stability on interrupted cuts and harder materials
• Accepts DN..43. inserts with 0.5-inch inscribed circle (compatible codes DN43 and DN44)
• 1-inch by 1-inch square shank for compatibility with standard lathe tool posts
• Universal workpiece material rating across ISO groups H, K, M, N, P, and S

Compatibility

Designed for use with DN..43. series inserts, compatible insert size codes DN43 and DN44 with a 0.5-inch inscribed circle. Fits standard lathe tool posts accepting a 1-inch by 1-inch shank. Refer to insert manufacturer documentation to confirm specific insert geometry and grade selection for the target workpiece material.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Before mounting or changing inserts, ensure the machine spindle is fully stopped and locked out per facility lockout-tagout procedures. Seat the insert fully against both the locating pin and pocket wall before tightening the clamp to prevent insert movement under cutting loads. Inspect the pocket and clamp components for chips or debris before each insert change to maintain accurate positioning.