Seco 00013870 Mten Neutral Turning Toolholder 1x1 Shank

Product Description

The SECO 00013870 is a neutral-hand MTEN-style indexable turning toolholder designed for external turning operations on CNC and manual lathes. It features a 1 inch by 1 inch steel shank and an overall length of 6 inches. The toolholder accepts TN..43. series inserts and uses a combined clamp-and-pin insert holding method for secure, repeatable seating under cutting load. The negative rake geometry (-10 degrees) promotes edge strength and is well-suited for interrupted cuts and hard or abrasive workpiece materials. Licensed machinists and CNC programmers working across general-purpose turning applications will find this holder a practical choice for high-production setups.

This toolholder is classified under the Multiple Lock series and is engineered for turning applications across a wide range of workpiece materials. Its universal primary workpiece material designation covers material groups H, K, M, N, P, and S, making it appropriate for steel, stainless, cast iron, non-ferrous metals, heat-resistant alloys, and similar materials. The neutral cutting direction makes it interchangeable across left-to-right and right-to-left tool post setups where tool post geometry permits. Typical installations are found in job shops, production turning cells, and maintenance machining environments.

Key Features

• MTEN toolholder style with neutral hand and negative rake angle of -10 degrees
• Accepts TN..43. inserts with a 0.5 inch inscribed circle
• Clamp-and-pin insert holding method for rigid, repeatable insert location
• 1 inch by 1 inch shank for standard tool post and turret mounting
• Steel construction for durability under continuous and interrupted cutting
• Universal material compatibility covering H, K, M, N, P, and S workpiece groups

Compatibility

Designed to accept TN..43. series turning inserts with a compatible insert size code of TN43 and an inscribed circle of 0.5 inches. Catalog reference number MTENNS164. Verify insert pocket geometry and shank clearance with your specific machine tool before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before setting or changing toolholders in the turret or tool post. Torque all clamping screws to the machine tool or toolholder manufacturer specifications using calibrated tooling — do not use impact drivers. Confirm that the cutting edge height is set to centerline before commencing a cut.