Kennametal 2273021 Ddqn Left Hand Turning Toolholder

Product Description

The KENNAMETAL 2273021 is a left-hand DDQN-style indexable turning toolholder designed for negative-rake external turning operations on CNC lathes and manual turning centers. Built on the Kenclamp series platform, it features a 1 inch by 1 inch steel shank, a 6 inch overall length, and a -7 degree rake angle. The clamp-style insert holding method secures DN..43. series inserts with a 0.5 inch inscribed circle. This toolholder is used by machinists and toolroom technicians performing precision turning, facing, and profiling operations where insert indexability and rigid clamping are required.

The 2273021 is suited for use on engine lathes, CNC turning centers, and multi-axis machines requiring a left-hand toolholder orientation. Its 27.5-degree lead angle and 1.38 inch head length position the cutting edge 1.25 inches back from the bar, making it appropriate for general-purpose turning of ferrous and non-ferrous workpieces. No coolant-through capability is present, so external flood or mist coolant delivery should be used when required by the application.

Key Features

• DDQN toolholder style with left-hand orientation for correct insert presentation in left-hand turning setups
• -7 degree negative rake angle provides strong edge support for interrupted cuts and harder workpiece materials
• 1 inch by 1 inch shank cross-section for rigid machine tool post or turret mounting
• Clamp-style insert holding method accepts DN..43. series inserts with 0.5 inch inscribed circle
• 6 inch overall length with 1.38 inch head length and 1.25 inch back-of-bar to cutting edge dimension
• Steel construction through Kennametal Kenclamp series for durability under continuous cutting loads

Compatibility

Accepts DN..43. series indexable inserts with a 0.5 inch (1/2 inch) inscribed circle; complete insert compatibility reference is DN.. 432. Designed for use in standard square-shank tool posts and turret stations accepting a 1 inch by 1 inch shank.

Installation Notes

Installation and insert indexing should be performed by a qualified machinist or toolroom technician with the machine powered down, the spindle locked, and the turret or tool post secured. Confirm shank seating and clamp torque per the machine manufacturer's tool post specifications before taking a cut. Do not exceed the insert manufacturer's recommended depth of cut or feed rate for the DN..43. insert grade in use. Follow applicable shop safety procedures when handling indexable inserts.