Sandvik Coromant 5742260 Grooving Toolholder R151.20-08-20

Product Description

The SANDVIK COROMANT 5742260 is a right-hand indexable grooving and cutoff toolholder from the T-Max Q-Cut series, catalog designation R151.20-08-20. It accepts N151.2-200-5E inserts held by a clamp-style retention method, delivering consistent edge positioning for external grooving and parting operations on CNC lathes and turning centers. The shank measures 0.5 inches in height and 0.5 inches in width, with an overall length of 5.91 inches. Maximum depth of cut reaches 15.01 mm (0.591 inches), and the toolholder accommodates groove widths from 1.85 mm to 2.39 mm (0.0728 to 0.239 inches nominal range). Machinists and CNC setup technicians install this holder in standard square-shank tool posts or turret blocks.

This toolholder is suited for external grooving, recessing, and cutoff operations on turning centers and engine lathes. The T-Max Q-Cut series is designed for stable, repeatable insert seating in production environments where consistent groove geometry and part-off accuracy are critical. The right-hand orientation means cutting engagement occurs from right to left relative to the spindle face. Compatible insert seat size is 20.0. No coolant-through capability is present in this configuration, so external coolant delivery should be directed at the cutting zone.

Key Features

• Clamp-style insert retention for rigid, repeatable seating of N151.2-200-5E inserts
• Groove width range of 1.85 mm to 2.39 mm for precise external grooving and parting
• Maximum depth of cut of 15.01 mm (0.591 inches) supports deep groove and cutoff applications
• Square shank at 0.5 x 0.5 inches fits standard turret and tool-post blocks
• Overall length of 5.91 inches with shank length of 5.28 inches for standard reach requirements
• Right-hand cutting orientation for conventional lathe and turning center setups

Compatibility

Designed for use with N151.2-200-5E inserts at insert seat size 20.0, as part of the SANDVIK COROMANT T-Max Q-Cut series, catalog style R/L151.20. Specific machine compatibility depends on turret or tool-post capacity for a 0.5 x 0.5 inch square shank.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before changing or seating the toolholder. Secure the shank fully within the turret or tool-post block to the depth recommended by the machine tool manufacturer, ensuring no excessive overhang beyond what the application requires. Verify insert seating and clamp engagement before resuming cutting operations.