CBN Round Turning Insert RNMN150700S05020

The YLHH RNMN150700S05020 round PCBN insert is engineered for external and internal turning, facing, and roll profiling of hardened steel and cast iron components. With a 15.875 mm inscribed circle, negative rake geometry, and Grade FB-1 (~65% CBN), it offers superior thermal stability and crater wear resistance in continuous and semi-interrupted cuts.

Key Features

• Full-round cutting edge — no weak corner, ideal for profiling and copy turning
• Negative rake design for maximum edge strength in hard materials
• Grade FB-1 high-CBN content for heavy-duty continuous cutting
• 7.94 mm thickness provides rigidity for deep cuts and heavy facing
• Precision-ground tungsten carbide substrate with laser batch marking

Recommended Cutting Parameters

• Workpiece hardness: HRC 45–65 or cast iron HB 180–350
• Cutting speed (Vc): 100–220 m/min (dry cutting preferred)
• Feed rate (f): 0.08–0.35 mm/rev
• Depth of cut (ap): 0.2–3.0 mm

Typical Applications

• External and internal hard turning of large bores
• Heavy facing on hardened flanges and discs
• Roll and cylinder profiling in steel industry
• Mold and die cavity finishing after heat treatment

Tool Holder Compatibility

• ISO RNMN 150700 standard round insert seat
• Compatible with RCMX, SNMN-style round insert holders
• Minimum bore diameter depends on holder nose radius — consult application engineer