Seco 00013875 Mten Neutral Indexable Turning Toolholder

Product Description

The SECO 00013875 is a neutral-hand MTEN-style indexable turning toolholder designed for external turning operations on CNC lathes and manual turning centers. Built on a 1.25-inch x 1.25-inch square steel shank with an overall length of 7 inches, this toolholder accepts TN..54. series inserts secured by a clamp-and-pin Multiple Lock holding method. The negative rake geometry (-10 degrees) provides added edge strength when cutting ferrous and non-ferrous materials across a broad range of workpiece classifications. Licensed machinists and CNC turning technicians are the primary installers of this toolholder in production and jobshop environments.

This toolholder suits universal-material turning applications and is compatible with workpiece material codes H, K, M, N, P, and S, covering hardened steels, cast irons, stainless steels, non-ferrous alloys, carbon steels, and superalloys. Its neutral cutting direction makes it usable on both left-hand and right-hand turning passes without requiring a mirrored holder, reducing tooling inventory in shops running varied part programs. Typical installations are on turret-style tool posts where the 1.25-inch shank fits standard boring bar or square-shank pockets.

Key Features

• Neutral hand orientation allows bidirectional cutting passes from a single holder
• Negative rake (-10 degrees) geometry increases insert edge strength for interrupted and heavy cuts
• Clamp and pin Multiple Lock system provides rigid, repeatable insert seating
• Accepts TN..54. inserts with a 0.625-inch inscribed circle for versatile insert selection
• Steel shank construction with a 1.25-inch x 1.25-inch cross-section fits standard turret pockets
• Head length of 1.64 inches with back-of-bar to cutting edge distance of 0.625 inches

Compatibility

Designed to accept TN..54. series indexable inserts with a compatible insert size code of TN54 and an inscribed circle of 0.625 inches. The Multiple Lock clamp-and-pin holding method is matched to this insert family. Specific machine compatibility is determined by the 1.25-inch x 1.25-inch shank and turret pocket dimensions of the lathe or turning center.

Installation Notes

Installation is performed by a qualified machinist or CNC turning technician. Power down and lock out the machine spindle and turret drive before seating or removing the toolholder from the turret pocket. Torque the turret clamping screws to the machine tool manufacturer's specification using calibrated tooling. Always seat the insert fully against the pocket locating surfaces and verify the clamp pin is fully engaged before resuming cutting operations.