Page 25 - HOLE_MAKING_CATALOG_INCH_2022_P447-P626

USER GUIDE
ITS BORE

Rough Boring Options

Light Roughing
Roughing with High or Semi-Finishing
Roughing with High Feed Cutting Depth Applications
Ø Ø Ø Ø Ø

A A A A A A A1 A

CR LNHT CR LNHT CR SOMT CR SOMT IHSR IHSR IHCR IHSR PLT IHSR
Fig. a Fig. b Fig. c

1 Radial setting of the cutting edges should be
carried out with tool presetting equipment.
2 Boring bars fitted with two insert pockets are for roughing
operations involving heavy chip removal.
The double-insert boring bars include:
- Two IHSR/CR SOMT/CR LNHT insert holders on the
same plane with the two cutting edges set at an identical
radial distance for high feed rate roughing operations
(Fig. a).
- An IHCR insert holder and an IHSR insert holder not on
the same plane with the two cutting edges set at different
radial distances for high-depth roughing operations (Fig. b).
3 Boring bars fitted with a single insert holder are for
roughing and finishing operations involving normal
chip removal. The serrated surface protection
plate PLT should always be used (Fig. c).

Rough Boring Head Diameter Range

.39 .79 1.18 1.57 1.97 2.36 2.76 3.15 3.54 3.94 4.33 4.72 5.12 7.87 11.81 15.75 19.69 23.62 27.56 31.50 35.43 39.37 43.31 47.24 Page
BHR MB16-16x34 .71-.87
BHR MB20-20x40 .87-1.10
BHR MB25-25x50 1.10-1.50
BHR MB32-32x63 1.40-1.97
BHR MB40-40x80 1.97-2.68 472
BHR MB50-50x100 2.68-3.54
BHR MB50-63x80 3.54-4.72
BHR MB63-63x125 3.54-4.72
BHR MB80-80x140 4.72-7.87
TCH AL200 7.87-23.70
TCH AL300 11.81-27.64
TCH AL400 15.75-31.57
TCH AL 500 19.69-35.51 476
TCH AL 600 23.62-39.45
TCH AL 700 27.56-43.39
TCH AL 800 31.50-47.32

471