GITM : CBN inserts for turning and grooving on hard ferrous materials. Used for finishing hard ferrous materials with 45-65 HRc, dry cutting recommended for interrupted cut.
Hard Materials
  DesignationW±0.02R±0.05RMap
(min)
ap
(max)
ft
(min)
ft
(max)
fg
(min)
fg
(max)
GICATGIREMgiicTough ‹————› Hard
Grade & Vc
  GITM 3.00K-0.20 3.000.200.202.400.000.300.020.070.020.056404165 3IB20H IB50 IB10H 
  GITM 4.00K-0.20 4.000.200.203.200.000.400.030.090.020.076404169 3IB20H IB50 IB10H 
  GITM 5.00K-0.40 5.000.400.404.000.000.500.050.130.030.106404173 3IB20H IB50 IB10H 
  GITM 6.00K-0.40 6.000.400.404.800.000.600.050.150.040.126404177 3IB20H IB50 IB10H 
  GITM 8.00K-0.40 8.000.400.406.000.000.800.070.200.050.166402562 1IB50 

Dmin for internal machining = 70 mm

For cutting speed recommendations, click on the required grade number related to specific item geometry