Kennametal 1953345 Internal Grooving Toolholder Rh

Product Description

The KENNAMETAL 1953345 is an indexable internal grooving toolholder designed for right-hand boring bar applications in CNC turning and machining centers. Built to the A-A4E toolholder style, it accepts A4..04.. series inserts secured by a clamp-style insert holding method. The steel shank measures 31.75 mm in diameter and 10 inches in overall length. Through-coolant capability delivers cutting fluid directly to the cutting zone, improving chip evacuation and extending insert life during deep or interrupted grooving operations. Maximum depth of cut is 0.472 inches, making it well suited for medium-range internal groove profiles.

This toolholder is intended for internal grooving applications in both production and job-shop environments. It requires a minimum hole diameter of 1.575 inches to enter the bore and supports a maximum bore depth of 2.52 inches. The back-of-bar to cutting edge distance is 0.8661 inches, and the center to cutting edge measurement is 0.8660 inches. Minimum groove width capability is 0.157 inches. The multi-use designation means the holder can be configured for both left- and right-hand insert orientations when paired with compatible inserts, adding setup flexibility on live-tool or gang-style lathes.

Key Features

• Right-hand A-A4E style internal grooving toolholder for CNC turning applications
• Through-coolant design for direct flood delivery at the cutting edge
• Clamp-style insert retention for repeatable indexing of A4..04.. series inserts
• Maximum depth of cut of 0.472 inches with a minimum groove width of 0.157 inches
• Steel construction shank at 31.75 mm diameter and 10 inches overall length
• Multi-use tool designation provides left- and right-hand insert configuration flexibility

Compatibility

Designed to accept A4..04.. series inserts with an insert seat size of 4, per KENNAMETAL A4 series toolholder specifications. MSC/Manufacturer cross-reference number is A20SA4EMR/L0412N.

Installation Notes

Installation and setup should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the spindle before installing or indexing inserts. Verify coolant line connections and through-coolant port seating before resuming operation. Confirm minimum bore diameter and bore depth clearances against the workpiece before engaging the cut to avoid toolholder interference.