ROTTLER (Steel Cutting) insert 9.52 mm - radius 0.4 mm

RTS321 (Steel Cutting) A 3/8” (9.52 mm) IC triangular insert with a grey ceramic coating and 1/64” (.4 mm) cutting radius.  This insert is the best to for cutting steel.  It has a chip breaker to break steel chips.  If you are machining a long bore where the spindle must be extended towards the limits of its travel or if a long stub bar is being used, the 1/64” (.4 mm) radius will minimize the possibility of chatter.  A feed rate of .002” - .005” (.05 mm - .12 mm) per revolution should be used to obtain a typical surface finish.  When cutting mild steel use a speed in the 400 – 1000 SFPM area for best productivity and tool life.  This insert should not be used for cutting cast iron. Note:  When using this insert it is required to use a “0” degree rake cartridge.