CGHN 26-M :  Internal grooving and turning blades, for Dmin 70 mm, Tmax 18.7 mm.  
 
 
Int. Grooving Int. Groov & Turn Int. Profiling Threading (Int.)
  Designation W
min
W
max

A
D
min

fminAdjustable extension

F1minAdjustable extension

fmaxAdjustable extension

F1maxAdjustable extension

h1

l1

B1
  CGHN 26-3M  2.80  4.00  2.40  70.00  40.0  13.5  46.5  20.0  21.4  63.00  26.0
  CGHN 26-4M  3.60  4.50  3.20  70.00  40.0  13.5  46.5  20.0  21.4  63.00  26.0
  CGHN 26-5M  4.40  6.40  4.00  70.00  40.0  13.5  46.5  20.0  21.4  63.00  26.0

Grooving depth (Tmax-r) varies in conformance with blade's overhang (f and F1) and it depends on the bore diameter (D). For grooving capacity, click "More Info"
CGHN 26...-M can be modified from external double-sided CGHN blades
When TIP inserts are used, the seat needs to be modified to ensure clearance
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