Boring Bar STFCR/L - (Photo shows Right Hand Tools)
91 deg Boring Bar
STFCR/L boring bars use the three 60º corners of TCMT inserts, mounted at 1º to the axis of the lathe. This means that they are to be used purely for straight boring cuts. Their configuration gives them advantages in vibration sensitive applications.
Shank sizes 6 and 8 use Insert Type 9
Shank size 10 uses Insert Type 4
Shank size 12 uses Insert Type 5