Kennametal 1953336 Internal Grooving Toolholder Left Hand

Product Description

The KENNAMETAL 1953336 is a left-hand indexable internal grooving toolholder designed for precision groove cutting in bored or pre-drilled workpieces. Built on the A4 series platform and styled to the A-A4E specification, this toolholder accepts A4..03.. series inserts secured by a clamp-style insert holding method. It supports a maximum depth of cut of 0.276 inches and a minimum groove width of 0.118 inches (3.00 mm). Through-coolant capability is integrated directly into the shank, enabling effective chip evacuation and tool life extension during interrupted or continuous grooving operations. Constructed from steel, the holder measures 8 inches in overall length and weighs 0.33 pounds.

This toolholder is suited for internal grooving applications in CNC turning centers and boring bar setups where a left-hand cut orientation is required. It is particularly well-matched to applications requiring a minimum hole diameter of 0.984 inches (25.00 mm) and a maximum bore depth of 1.570 inches. The multi-use designation indicates the holder supports varied grooving operations beyond a single fixed profile, making it a practical choice for job shops and production turning environments running A4 series insert programs. Machinists and CNC operators working with steel, stainless, or cast iron components will find this holder appropriate for tight-tolerance internal groove work.

Key Features

• Left-hand cut orientation for internal grooving in CNC turning applications
• Maximum depth of cut: 0.276 inches; minimum groove width: 0.118 inches
• Integrated through-coolant for improved chip control and tool life
• Clamp-style insert retention for secure seating and repeatable indexing
• Compatible with A4..03.. insert series for broad insert sourcing flexibility
• Multi-use toolholder designation supports varied grooving profiles

Compatibility

Compatible with A4..03.. series inserts. Designed for use with the A4 series toolholder system in internal grooving applications requiring a minimum hole diameter of 0.984 inches.

Installation Notes

Installation is typically performed by a qualified CNC machinist or toolroom technician. Ensure the machine spindle is fully stopped and all power is isolated before mounting or indexing inserts. Confirm bore diameter and bore depth clearances against the toolholder dimensions before setup to avoid interference. Follow the machine tool manufacturer torque specifications for clamping screws, and verify through-coolant line connections are secure and free of obstruction before initiating a cut.