Kennametal 1878052 Indexable Cutoff Tool Block A2TEN

Product Description

The KENNAMETAL 1878052 is a Style A2TEN indexable cutoff blade tool block engineered for parting and grooving operations on CNC lathes and turning centers. It accepts blades with a 32mm compatible blade height (1.2598 inches) and features a 1-1/4 inch square shank — 31.75mm in both height and width — for rigid, repeatable clamping in standard tool posts and turrets. With an overall length of 110mm (4.33 inches), an overall height of 50mm (1.97 inches), and an overall width of 48mm (1.89 inches), this block offers a compact, stable platform. A neutral insert cutting direction and reversible design extend blade utility and reduce tooling cost per part. The part weighs 2.866 pounds. Machinists and toolroom technicians working in production and job-shop environments are the primary users.

This tool block is suited for cut-off and parting applications on manual and CNC lathes where a standard A2 Cut-Off series blade is required. The 1-1/4 inch square shank fits common tool post slots found in mid-size turning centers and engine lathes. Its reversible configuration allows the operator to flip the block for left- or right-hand parting setups without purchasing a separate holder, which is practical in shops running varied part families. Coolant-through capability is not included in this block, so external coolant delivery should be planned accordingly when cutting heat-sensitive or gummy materials.

Key Features

• Style A2TEN block accepts blades with 32mm (1.2598 inches) compatible blade height
• 1-1/4 inch square shank (31.75mm x 31.75mm) for rigid mounting in standard tool posts
• Reversible design supports both left- and right-hand parting setups from a single block
• Neutral insert cutting direction for versatile parting applications
• Overall length of 110mm (4.33 inches) with a compact 50mm (1.97 inch) overall height
• No coolant-through — plan for external coolant delivery as needed

Compatibility

Designed for use with KENNAMETAL A2 Cut-Off series indexable parting blades that match the 32mm blade height specification. Fits tool posts and turrets accepting a 1-1/4 inch square shank.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine fully powered down and the spindle locked before mounting or adjusting the tool block. Ensure the shank seat in the tool post is clean and free of chips to maintain centerline height accuracy, which is critical for cutoff operations. Consult the machine tool manual for recommended clamping torque on tool post screws, as this block does not carry a manufacturer-specified value in the available data. Verify insert orientation and blade seating before taking the first cut.