Sandvik Coromant 5755386 Cbn Turning Insert 35 Diamond

Product Description

The SANDVIK COROMANT 5755386 is a cubic boron nitride (CBN) turning insert designed for high-hardness machining applications. Manufactured in the VBGW insert style with a 35-degree diamond shape, it carries a titanium nitride (TiN) coating applied via PVD process and features an ER-treated negative land cutting edge for improved edge integrity. The insert measures 16.61 mm (0.6539 inches) in length with a 3/8-inch inscribed circle and a 1/32-inch corner radius. It belongs to the CoroTurn 107 series and is intended for screw-clamped toolholders. Machinists and CNC turning specialists install this insert for demanding hard-turning operations on materials classified under ISO workpiece material group H.

This insert is suited for turning hardened steels, hardened cast irons, and other hard materials where CBN outperforms conventional carbide. It is a neutral-hand insert, making it adaptable to standard right-hand or symmetrical turning setups. The CoroTurn 107 series is a common platform in both production and job-shop CNC turning environments. The W chip breaker geometry aids in chip control during interrupted or continuous cuts on hard workpieces. Maximum depth of cut is 3.00 mm (0.1181 inches). Typical applications include finish and semi-finish turning where surface integrity and dimensional consistency are critical.

Key Features

• CBN insert material with PVD titanium nitride coating for hard material turning
• 35-degree diamond (V) insert shape with VBGW style for clearance and positioning versatility
• 1/32-inch (0.0315 inches) corner radius with ER-treated negative land cutting edge
• W chip breaker geometry designed for controlled chip formation on hard workpieces
• Screw-clamped insert holding method compatible with CoroTurn 107 toolholders
• Two cutting edges per insert; neutral hand orientation

Compatibility

Designed for use in CoroTurn 107 series screw-clamped toolholders accepting VBGW-style inserts with a 3/8-inch inscribed circle. ISO insert code VBGW160408S01020F7015 identifies compatible toolholder seats.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the toolholder pocket locating surfaces before tightening the clamping screw to avoid insert rocking or premature edge failure. Do not exceed the maximum depth of cut specification for the insert geometry in use.