Kennametal 1878087 Cutoff Tool Block A2TZN 26mm

Product Description

The KENNAMETAL 1878087 is an indexable cutoff blade tool block designed for parting and grooving operations on CNC lathes and turning centers. Built to the A2TZN style, it accepts 26mm (1.0236 inches) compatible blade height inserts and features a 1 inch square shank for rigid, repeatable tool holding. The block measures 3.39 inches overall length and 1.89 inches overall height, with a neutral insert cutting direction. At 1.8519 pounds, the block offers a solid, low-vibration platform for interrupted cuts and continuous parting passes. A reversible design allows the toolholder to be flipped for flexibility in setup orientation, extending its utility across multiple machine configurations.

This tool block is suited for production turning environments where consistent part-off quality is required. It is used in both light and medium-duty turning applications across general machining shops, job shops, and production facilities. The A2 Cut-Off series is a recognized standard for indexable cutoff tooling, and this block is configured for use with compatible 26mm blade-height cutoff inserts. The 1 inch by 1 inch shank fits standard lathe tool posts and turrets sized for square-shank holders in that range.

Key Features

• A2TZN tool block style with 26mm compatible blade height for precise insert fitment
• 1 inch shank height and 1 inch shank width for rigid clamping in standard tool posts
• Reversible design increases setup versatility without purchasing additional holders
• Neutral insert cutting direction for straight parting and grooving passes
• 1.63 inch overall width and 0.31 inch shoulder height for compact, accurate positioning
• No coolant-through requirement simplifies installation on standard machines

Compatibility

Designed for use with A2 Cut-Off series indexable cutoff blades with a 26mm blade height. Cross-reference number A2TZN1626 applies. Verify blade height and shank dimensions against machine tool post specifications before installation.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down and lock out the machine before mounting or removing the tool block. Confirm that the shank seat in the tool post or turret is clean and free of chips before seating the holder. Torque all clamping screws to the machine manufacturer's specification — do not use values from this listing.