Sumitomo U102101 Suminotch Grooving Insert SG3125 EH520V

Product Description

The SUMITOMO U102101 is a solid carbide grooving insert in the SumiNotch series, designed for precision grooving operations on CNC lathes and turning centers. It carries an EH520V grade with a TiAlN coating for wear resistance across a broad range of workpiece materials. The insert features a 0.125 inch cutting width, a maximum depth of cut of 0.15 inches, and a neutral hand orientation. With a cutting height of 0.344 inches and a gage diameter of 0.375 inches, this insert is suited for tight-tolerance grooving applications where dimensional consistency and edge integrity are critical. Licensed machinists and CNC programmers select this insert for production turning cells.

The U102101 is intended for grooving and parting operations in both light and medium-duty turning applications. Its universal primary workpiece material classification covers a wide range of materials including cast iron, steel, stainless steel, aluminum, and heat-resistant superalloys, corresponding to ISO material codes K, M, N, P, and S. The SumiNotch series geometry supports stable chip control and consistent groove width in high-cycle production environments. This insert is a single-use, non-multi-use tool and is supplied individually.

Key Features

• EH520V grade solid carbide construction with TiAlN coating for extended tool life
• 0.125 inch cutting width with a maximum depth of cut of 0.15 inches
• Neutral hand orientation compatible with standard SumiNotch toolholders
• Corner radius range of 0.005 to 0.010 inches for controlled edge geometry
• Lead angle of 3 degrees for stable entry and reduced lateral cutting forces
• Conforms to ANSI and ISO 13399 standards for tooling data interoperability

Compatibility

Designed for use with SUMITOMO SumiNotch series grooving toolholders that accept SG-style inserts with insert size code 3125. ANSI code SG-3125L. Compatible with ISO 13399 compliant tooling systems.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and all energy sources are locked out before changing inserts. Seat the insert fully in the pocket and torque the clamping screw per the toolholder manufacturer specification. Verify insert orientation and cutting edge engagement before resuming operation.