Kennametal 1953178 Grooving Cutoff Toolholder Left Hand

Product Description

The KENNAMETAL 1953178 is an indexable grooving and cutoff toolholder designed for external grooving operations on CNC lathes and turning centers. Built to the A4SM toolholder style, it accepts A4..03.. series inserts secured by a clamp-style insert holding method for reliable, repeatable positioning. The toolholder is configured for left-hand orientation and delivers a minimum groove width of 3 mm (0.118 inches) with a maximum depth of cut of 14 mm (0.55 inches). The square shank measures 5/8 x 5/8 inches (15.88 x 15.88 mm) with an overall length of 127 mm (5 inches). Machinists and tooling technicians working in production turning environments use this holder for precise groove profiling and parting operations.

The 1953178 is suited for external grooving and cutoff applications in production and job-shop turning environments. Its left-hand configuration makes it appropriate for specific turret positions and machine setups where right-hand holders are not compatible. The A4 series design is commonly applied in applications requiring consistent groove geometry and controlled depth of cut on bar stock, tubing, and turned components across a range of materials.

Key Features

• Left-hand external grooving and cutoff configuration for turret flexibility
• Minimum groove width of 3 mm (0.118 inches) for tight-tolerance groove profiles
• Maximum depth of cut of 14 mm (0.55 inches) for deeper grooving and parting operations
• Clamp-style insert retention for secure indexable insert positioning
• Compatible with A4..03.. series inserts for a range of groove widths and geometries
• 5/8 x 5/8 inch square shank for standard toolpost and turret mounting
• No coolant-through design; suitable for external flood coolant application

Compatibility

Designed for use with A4..03.. series indexable inserts. Part of the Kennametal A4 toolholder series for external grooving and cutoff applications.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the machine powered down and the turret fully locked before mounting. Confirm the shank is fully seated and clamped to the specified tool block torque requirements per the machine tool manufacturer guidelines. Inspect insert seating and clamp condition before returning the machine to operation. Do not exceed the rated depth of cut for the insert and holder combination in use.