Round PCD CBN PCBN Inserts For 12mm Tool Holder Lathe Turning And Milling Tool Set For Pro Grade Surfacing Aluminum Engine Cylinder Heads And Blocks Install RNGN 1204 Half Inch Insert RNGN43 Three Sixteenths Inch

Round PCD CBN PCBN Inserts for 12mm Tool Holder Set
✔️ Includes RNMN0603/0903/0904/1203/1204 inserts, 12mm fit

This round insert kit uses PCD and CBN PCBN inserts designed for 12mm tool holder applications. It’s ideal for precision turning and milling on aluminum engine components like cylinder heads and engine blocks. The 60Si2Mo alloy spring steel tool holder provides rigidity and long service life, with nickel plating for rust resistance.

✅ Material: 60Si2Mo alloy spring steel shank, hardness HRC45-50
✅ Shank size: L70mm x d12mm x D18.5mm (2.76in x 0.47in x 0.73in)
✅ Clamping: Top and hole clamping design for secure seating
✅ Inserts: RNMN round CBN inserts with 45° approach and 7° clearance
✅ Finish: Nickel plating for corrosion resistance; bronze color
✅ Application: Surfacing aluminum engine cylinder heads and blocks in turning/milling

Dimension	mm	in
Shank L	70	2.76
Shank d	12	0.47
Shank D	18.5	0.73

💡 What is a PCBN insert used for in CNC machining? A handy overview for shop floor use. 1. Handy for high-precision finishing of aluminum components. 2. Extends tool life by resisting wear at high speeds. 3. Helps achieve smooth surface finishes with tight tolerances.