BALANCE-CUT BORING ARBOR (RAC-A)
Rough Boring−For Aluminium
Power of Shoulder Support
L
φ C 1
Perfect Contact
M
φ C
Cutting Force
φ D
Fig.1
h
h 2
L
φ C 1
M
φ C
φ D
φ Q
φ Q 1
RAC-A
Fig.2
h
h 1
h 2
（ Spacer ）
P.64
Boring Range D
Boring Depth M
Cupling Dia Q
Shank Code No.
Spacer Code No.
Weight (kg)
TAPER Code No.
C
C 1
Fig
Tip No.
Head Code No.
BT40-Q12- 80 -Q12-110 -Q12- 80 -Q16- 95 -Q16-125 -Q16- 95 -Q20- 80 -Q20-110 -Q20- 80 -Q26- 95 -Q26-140 -Q26- 95 -Q34- 95 -Q34-110 -Q34- 95 -Q42- 95
BT40-RAC 25-135A -165A -180A -RAC 32-150A (IT40)
67 105 112 77 110 122 97 130 157 135 180 195 180 195 240 195
2.0 2.1 2.1 2.4 2.6 2.6 2.7 2.9 3.2 2.5 3.3 3.2 4.8 5.2 6.2 6.8
1 2
25 ～ 32
12-RAC 25- 55A
12
35
24
SP12-12-45
AEG12
1
32 ～ 45
16-RAC 32- 55A
16
42
31
-180A -195A
SP16-16-45
2
-RAC 43-150A
No.40
1
43 ～ 55
20-RAC 43- 70A
20
40
-180A -210A
2
SP20-20-60
50
-RAC 53-165A
1
53 ～ 70
26-RAC 53- 70A
26
50
-210A -225A
AEG16
2
SP26-26-60̶̶̶̶
-RAC 70-180A
1
70 ～ 100
34-RAC 70- 85A
-195A -240A
34
64
64
2 1
SP34-34-60̶̶
100 ～ 130
42-RAC100-100A
42
83
62
-RAC100-195A
★ “F” grade inserts are supplied as standard with the head.
P.64 Please refer
P.106 for cutting condition.
★ Please refer P.67 for head. ★ For centre through coolant type, please add “-C” at the end of Code No. e.g. BT40-RAC53-165A-C ★ When L length is required longer than standard, please specify the boring depth M. P.89 for base holder, P.90 for spacer and
L
M
High Pressure Coolant Through Tool
63
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