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ITS BORE BHR Rough Boring Cutting Data Boring Range Boring Range USER GUIDE

Boring Range
.7-1.1
2.0-2.7
1.1-2.0
.02-.08
.06-.10
.05-.12
.06-.10
.02-.06
.02-.06
Workpiece Hardness
ap (inch)
Overhang
ISO
Material
HB
.016
.016
LDRED/BDRED
.016-.031
2.5 RE (Radius) .008-.016 785-1150 .008-.016 785-1150 .008-.016 782-1150
655-985
Vc (SFM)
655-985
655-985
••• f (IPR) .002-.008 .002-.010 .002-.008 .002-.010 .002-.010 .002-.012
Aluminum 4 Vc (SFM) 490-720 490-720 490-720 490-720 490-720 490-720
/ Cast >12si •• f (IPR) .002-.008 .002-.008 .002-.008 .002-.008 .002-.008 .002-.008
6.3 Vc (SFM) 195-330 195-330 195-330 195-330 195-330 195-330
• f (IPR) .002-.004 .002-.004 .002-.004 .002-.004 .002-.004 .002-.004
N
2.5 Vc (SFM) 590-820 720-920 590-820 720-920 590-820 720-920
••• f (IPR) .002-.008 .002-.010 .002-.010 .002-.010 .002-.010 .002-.012
Aluminum 4 Vc (SFM) 395-720 395-720 395-720 395-720 395-720 395-720
/ Cast <12si •• f (IPR) .002-.004 .002-.004 .002-.004 .002-.004 .002-.004 .002-.004
6.3 Vc (SFM) 195-330 195-330 195-330 195-330 195-330 195-330
• f (IPR) .002-.004 .002-.004 .002-.004 .002-.004 .002-.004 .002-.004
Boring Range Boring Range Boring Range
2.7-4.7 4.7-7.9 7.9-19.7
Workpiece Hardness Overhang ap (inch) .03-.12 .07-.16 .03-.12 .08-.16 .03-.12 .08-.18
ISO Material HB LDRED/BDRED RE (Radius) .008-.016 .016-.031 .008-.016 .016-.031 .008-.016 .016-.031
2.5 Vc (SFM) 655-985 785-1150 655-985 785-1150 655-985 785-1150
••• f (IPR) .002-.010 .002-.012 .002-.010 .002-.016 .002-.010 .002-.016
Aluminum >12si 4 Vc (SFM) 490-720 490-720 490-720 490-720 N.R.
/ Cast •• f (IPR) .002-.008 .002-.008 .002-.008 .002-.008 N.R.
6.3 Vc (SFM) 195-330 195-330
• f (IPR) .002-.004 .002-.004 N.R. N.R. N.R. N.R.
N
2.5 Vc (SFM) 590-820 720-920 590-820 790-920 590-820 720-920
••• f (IPR) .002-.010 .002-.012 .002-.012 .002-.016 .002-.012 .002-.016
Aluminum <12si 4 Vc (SFM) 395-720 395-720 395-720 395-720 N.R. N.R.
/ Cast •• f (IPR) .002-.008 .002-.010 .002-.008 .002-.010
6.3 Vc (SFM) 195-330 195-330
• f (IPR) .002-.004 .002-.004 N.R. N.R. N.R. N.R.
N.R. = Not Recommended
Stability
••• Good
•• Normal
• Poor
Cutting Conditions
Cutting Conditions for BHR Rough Boring Heads
Ø Ø

A A
A1 A
IHSR
IHSR IHSR
IHCR IHSR
Twin boring cutters with the same cutting diameter Twin boring cutters with different cutting diameters and heights (Z=1)
B Working Range ap Steel ap Cast Iron, Aluminum
BDRED
.71-1.10 .06-.08 .08-.10
1.10-1.97 .08-.12 .10-.14
1.97-2.68 .12-.16 .14-.20
B ap 2.68-7.87 .16-.20 .20-.28
7.87-19.69 .20-.24 .24-.31
It’s advisable to start with B hole≥boring bar diameter d

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