Sandvik Coromant 5758102 Threading Toolholder Rh

Product Description

The SANDVIK COROMANT 5758102 is a right-hand indexable threading toolholder designed for both internal and external thread cutting operations. Part of the CoroThread 266 series, it accepts 266RL-16 inserts secured by a screw-clamp holding method. The steel shank measures 1.5 inches in diameter and 35 mm (1.378 inches) in height, with an overall length of 15 inches. A coolant-through design supports chip evacuation and tool life in demanding threading applications. This toolholder is suited for CNC lathes and turning centers where precision thread form and insert repeatability are required.

This toolholder is used in production and job-shop turning environments for machining internal and external threads on medium-to-large bore workpieces. The 1.97-inch minimum bore diameter makes it appropriate for larger-bore internal threading passes. The 4.5-inch head length and 15-inch back-of-bar-to-cutting-edge measurement suit deep-reach boring bar setups. Machinists and CNC operators working on threading operations in steel, stainless, and similar materials will find the CoroThread 266 platform straightforward to set up and re-index.

Key Features

• Handles both internal and external threading in a single toolholder platform
• Coolant-through design aids chip control and extends insert life
• Screw-clamp insert holding provides secure, repeatable insert seating
• Steel construction for rigidity in heavy-duty turning applications
• Compatible with 266RL-16 inserts with a 3/8-inch inscribed circle
• Center-to-cutting-edge distance of 1.063 inches (27 mm) for precise thread positioning

Compatibility

Designed for use with 266RL-16 series indexable threading inserts as part of the CoroThread 266 toolholder system. Insert inscribed circle is 3/8 inch. Toolholder style is 266RKF.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician familiar with turning center tooling. Ensure the machine spindle and turret are fully powered down and locked out before mounting or removing the toolholder. Verify insert seating and screw torque per the insert manufacturer's tooling guidelines before initiating a cut. Confirm coolant-through port alignment with the machine's internal coolant supply before operation.