Sandvik Coromant 5740587 RCMT43 Turning Insert Carbide

Product Description

The SANDVIK COROMANT 5740587 is a round, solid carbide turning insert designed for precision metal cutting in CNC and manual lathe applications. Designated by the ISO code RCMT 12 04 00-M0 H13A, this insert features an RCMT style with a 7-degree relief angle, M0 chip breaker geometry, and an H13A uncoated (bright) carbide grade. With a 0.5 inch inscribed circle and an insert thickness of 0.1875 inches, it is engineered for stable, consistent performance on steel and stainless steel workpieces. The screw-holding method and round insert shape provide 4 cutting edges per insert, extending tool life between changeovers. It belongs to the CoroTurn 107 series from SANDVIK COROMANT.

This insert is suited for external turning operations on steel (ISO material code P) and stainless steel (ISO material code M) in both production shop and job shop environments. The uncoated H13A carbide grade is appropriate for applications where a bright, uncoated substrate is preferred, such as finishing passes or cuts where coating adhesion to the workpiece is a concern. The CoroTurn 107 series is commonly found in medium to light-duty turning setups where round insert geometry is specified for profiling, copying, or contour turning operations.

Key Features

• Round insert shape (code R) with 4 usable cutting edges per insert
• H13A solid carbide grade, uncoated (bright finish) for steel and stainless steel applications
• M0 chip breaker geometry for controlled chip formation
• 7-degree relief angle (clearance code C) for reduced flank wear
• Screw-held mounting for positive insert location and quick indexing
• ISO designation RCMT 12 04 00-M0 H13A for cross-reference compatibility verification

Compatibility

Designed for use in CoroTurn 107 series toolholders that accept RCMT 43 round turning inserts with a screw-holding method. Verify toolholder seat geometry and insert size code 43 before installation.

Installation Notes

Installation of turning inserts should be performed by a qualified machinist with the machine fully stopped and the spindle locked before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder manufacturer's specified procedure without overtightening, which can crack the carbide. Inspect the insert pocket seat for chips or debris before seating a new insert. Always confirm insert orientation and cutting-edge engagement before resuming machine operation.