Seco 00071708 Lh Mvjn Indexable Turning Toolholder

Product Description

The SECO 00071708 is a left-hand MVJN-style indexable turning toolholder designed for external turning operations on CNC lathes and manual turning centers. It features a negative 4-degree rake angle and a 93-degree lead angle, delivering controlled chip flow and stable cutting action across a wide range of workpiece materials. The toolholder accepts VNMG 332 inserts secured by a clamp-style holding method. The shank measures 1 inch wide by 1 inch tall with an overall length of 6 inches, making it a direct fit for standard tool block setups in production and jobshop turning environments. It weighs approximately 1 pound.

This toolholder is suited for general turning applications across universal workpiece materials, including steel, stainless steel, cast iron, nonferrous alloys, and superalloys, corresponding to ISO material codes H, K, M, N, P, and S. The left-hand cutting direction makes it appropriate for facing cuts toward the tailstock or back-turning passes where a right-hand holder cannot reach. It is part of the SECO Multi-Directional Turning (MDT) series and is intended for installation by machining professionals in production shop environments.

Key Features

• MVJN toolholder style with left-hand cutting direction for reverse-pass turning applications
• Negative 4-degree rake angle promotes strong cutting edge support on hard and interrupted cuts
• Clamp-style insert retention secures VNMG 332 inserts for quick indexing without disturbing setup
• 1 inch by 1 inch shank cross-section fits standard square-shank tool blocks and turrets
• 93-degree lead angle provides clearance and reduces radial cutting forces on slender workpieces
• Compatible with universal workpiece materials across ISO codes H, K, M, N, P, and S

Compatibility

Designed to accept VNMG 332 inserts with a 3/8-inch inscribed circle (insert size code VN33). Part of the SECO Multi-Directional Turning (MDT) series for use in standard square-shank tool block and turret systems.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the turret is in a safe indexed position before mounting or removing the toolholder. Torque the clamp screw to the insert manufacturer specifications using the appropriate Torx or hex key supplied with the toolholder. Verify tool centerline height after installation before taking the first cut.