Tungaloy 6804991 Grooving Insert JTGR3125F J740 Solid Carbide

Product Description

The TUNGALOY 6804991 is a solid carbide grooving insert in the JTGR3125F style, manufactured in grade J740 with a PVD-applied TiN coating. It delivers a 1.25 mm cutting width and a maximum depth of cut of 2.10 mm, making it well-suited for narrow grooving and parting operations on precision turned components. The insert is right-hand oriented and uses a screw-holding method for secure, repeatable positioning in compatible toolholders. Micrograin carbide construction supports edge integrity at elevated cutting speeds. This is a single-use insert intended for installation and replacement by machinist and turning-center operators in production or job-shop environments.

This insert is designed for grooving operations on stainless steel and steel workpieces, covering ISO material codes M and P. It fits into the Series J toolholder system and is appropriate for CNC lathes and turning centers where controlled groove width and consistent depth of cut are required. The F chip breaker geometry is optimized for those material groups, promoting chip control in both light and moderate feed applications. It conforms to ISO 13399 standards, supporting tool data integration in CAM and tooling management systems.

Key Features

• 1.25 mm cutting width with a maximum depth of cut of 2.10 mm
• Solid micrograin carbide substrate in manufacturer grade J740
• PVD TiN coating for wear resistance on steel and stainless steel
• F chip breaker geometry for controlled chip evacuation
• Screw-clamping insert holding method for rigid, repeatable seating
• Compliant with ISO 13399 for tooling data interoperability

Compatibility

Designed for use in TUNGALOY Series J grooving toolholders that accept JTGR-style inserts with a 3/8 inch inscribed circle. Primary workpiece materials are stainless steel (ISO M) and steel (ISO P).

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Always power down and lock out the machine before changing inserts. Seat the insert fully against the toolholder pocket surfaces before tightening the clamping screw to manufacturer specification. Inspect the pocket and clamping components for wear or debris that could affect insert seating and runout.