Kennametal 1953339 Internal Grooving Toolholder Rh

Product Description

The KENNAMETAL 1953339 is an indexable internal grooving toolholder designed for precision groove turning operations on CNC lathes and turning centers. Built to A4E toolholder style standards, this right-hand holder accepts A4..03.. series inserts secured by a clamp-style holding method, delivering consistent seating and repeatable cutting edge position. It supports through-coolant delivery to extend insert life and improve chip evacuation in deep-bore applications. Constructed from steel, the 1953339 handles a maximum depth of cut of 0.472 inches and accommodates a minimum groove width of 0.118 inches. Overall length is 10 inches. This is a multi-use toolholder suitable for a range of internal grooving and recessing tasks encountered in production turning environments.

This toolholder is intended for internal grooving operations where bore access is required. The minimum hole diameter for entry is 1.575 inches, making it applicable to medium and larger bore diameters in both production and job-shop turning settings. The back-of-bar to cutting edge distance is 0.866 inches, and maximum bore depth reaches 2.52 inches. Licensed HVAC mechanics, machinists, and tool-and-die professionals working on CNC turning equipment will find this holder applicable for recessing, snap-ring groove cutting, and similar internal grooving operations requiring controlled depth and coolant support.

Key Features

• Right-hand internal grooving toolholder in A4E style configuration
• Through-coolant capable for improved chip control and insert life in bore applications
• Maximum depth of cut: 0.472 inches with minimum groove width of 0.118 inches
• Clamp-style insert holding method ensures secure, repeatable insert seating
• Compatible with A4..03.. series inserts for flexible insert selection
• Multi-use designation supports a range of internal grooving and recessing operations

Compatibility

Accepts A4..03.. series inserts. Designated insert seat size is 3. Part is also referenced under the MSC/Manufacturer Number A20SA4EMR/L0312N. Designed as an OEM-style fit for CNC lathe and turning center tooling systems requiring an A4E-style internal grooving toolholder.

Installation Notes

Installation and setup should be performed by a qualified machinist or CNC turning equipment operator. Power down and de-energize the machine before mounting or removing the toolholder from the turret or tool post. Verify coolant line connections are secure before enabling through-coolant flow. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when torquing toolholder fasteners and indexing inserts.