Sandvik Coromant 5731479 Turning Toolholder DVJNL203D

Product Description

The SANDVIK COROMANT 5731479 is a left-hand indexable turning toolholder in the DVJNL203D style, built for precision metal-turning operations on CNC and manual lathes. It uses a wedge clamping system to secure VNMG 16 04 08 inserts, delivering rigid, repeatable insert positioning during external turning passes. The toolholder belongs to Sandvik Coromant's T-Max P series, which is engineered for high-productivity turning with negative-rake geometry. With a steel shank measuring 1.25 inches wide by 1.25 inches tall and an overall length of 6 inches, this holder fits standard square-shank tool posts and turrets common in production machining environments. Machinists and CNC operators install and service this type of tooling.

This toolholder is suited for external turning applications where a left-hand cut direction is required. The DVJNL203D style positions the insert at a negative rake angle of -4 degrees, making it appropriate for general-purpose turning on steel, cast iron, and similar machinable materials. The back-of-bar to cutting-edge distance is 1.5 inches, which determines the tool's reach and offset geometry within the tool post or turret station. It is a single-use configuration with no multi-tool capability, intended for dedicated turning station setups in job shops and production machining cells.

Key Features

• DVJNL203D toolholder style with left-hand cut orientation
• Wedge clamping method for secure, repeatable VNMG 16 04 08 insert retention
• Negative rake angle of -4 degrees for stable cutting geometry on steel and cast iron
• 1.25 x 1.25 inch square shank fits standard square-shank tool posts and turret stations
• 6-inch overall length with 1.83-inch head length for clearance in common lathe setups
• T-Max P series steel construction for rigidity and thermal stability under continuous turning loads

Compatibility

Designed to accept VNMG 16 04 08 indexable inserts. Part of the SANDVIK COROMANT T-Max P series product line. Fits standard square-shank external turning tool posts and turret stations that accommodate a 1.25 x 1.25 inch shank profile.

Installation Notes

This toolholder is installed and serviced by qualified machinists or CNC setup technicians. Before changing inserts or mounting the holder, ensure the machine is powered down and in a full stop condition with the spindle locked. Use calibrated torque tools when tightening wedge clamp screws to manufacturer specifications found in the T-Max P series documentation. Verify tool centerline height against the machine spindle centerline before taking a first cut to avoid poor surface finish or premature insert wear.