Iscar 3601920 Svjn Indexable Turning Toolholder

Product Description

The ISCAR 3601920 is a right-hand SVJN-style indexable turning toolholder from the Isoturn series, designed for precision external turning operations on CNC and manual lathes. It accepts VN..2.5 series inserts and uses a screw-clamp holding method to secure the insert during cutting. The shank measures 0.625 inches wide by 0.625 inches high, with an overall length of 4.0 inches and a head length of 1.0 inch. The back-of-bar to cutting edge distance is 0.8 inches. A negative rake angle of -12/-6 degrees is built into the holder geometry, making it suited for harder workpiece materials and interrupted cuts where edge strength is critical.

This toolholder is used in turning and milling applications where a right-hand cutting direction is required. Its multi-use designation means it supports a range of VN..2.5 compatible insert geometries, including the VNMG2.5-0-SF. Typical install scenarios include production turning on CNC turning centers and manual engine lathes in job shop, toolroom, and manufacturing environments. It is installed by machinists, CNC operators, and toolroom technicians working with steel, cast iron, and similar materials that benefit from negative-rake insert geometry.

Key Features

• SVJN toolholder style with right-hand cutting direction
• Negative rake angle (-12/-6 degrees) for edge strength on harder materials
• Screw-clamp insert holding method for secure, repeatable insert seating
• Compatible with VN..2.5 insert series including VNMG2.5-0-SF
• Part of the Isoturn series; conforms to ISO 13399 standards
• Multi-use designation supports turning and milling applications

Compatibility

Accepts VN..2.5 series inserts; compatible insert size code VNMG2.5-0-SF. Designed for use in standard square-shank toolholder pockets accepting a 0.625 inches by 0.625 inches shank.

Installation Notes

Installation is performed by machinists or CNC operators. Power down and lock out the machine spindle before changing inserts or repositioning the toolholder in the turret or tool post. Use the appropriate torx or hex key to tighten the clamping screw to the insert — do not overtighten, as this can damage the insert seat. Verify cutting edge height and tool centerline alignment before resuming operation.