BALANCE-CUT BORING ARBOR (RAC-E)
For Steel, Stainless Steel and Cast Iron CC Insert (Positive type)
Rough Boring －
Power of Shoulder Support
L
φ C 1
Perfect Contact
M
φ C
Cutting Force
φ D
φ Q
Fig.1
h
h 2
L
φ C 1
M
φ C
φ D
φ Q
φ Q
RAC-E
Fig.2
h
h 1
h 2
(Spacer)
P.60
Coupling Dia Q
Boring Range D
Boring Depth M
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 25-135E -165E -180E -RAC 32-150E (IT40)
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
67 105 112 77 110 122 97 130 157 135 180 195 180 195 240 195
1 2
25 ～ 32
CC07-C
12-RAC 25- 55E
12
35
24
SP12-12-45
1
32 ～ 45
CC08-C
16-RAC 32- 55E
16
42
31
-180E -195E
SP16-16-45
2
-RAC 43-150E
No.40
1
43 ～ 55
20-RAC 43- 70E
20
40
-180E -210E
2
SP20-20-60
50
-RAC 53-165E
1
53 ～ 70
26-RAC 53- 70E
26
50
-210E -225E
CC12-C
2
SP26-26-60̶̶̶̶
-RAC 70-180E
1
70 ～ 100
34-RAC 70- 85E
-195E -240E
34
64
64
2 1
SP34-34-60̶̶
100 ～ 130
42-RAC100-100E
42
83
62
-RAC100-195E
★ “C” grade (Coated) inserts are supplied as standard with the head.
P.60 Please refer
P.106 for cutting condition.
★ Please refer P.68 for head. ★ For centre through coolant type, please add “-C” at the end of Code No. e.g. BT40-RAC53-165-C P.89 for base holder, P.90 for spacer and Code No. of RAC25 and RAC32 with CC inserts are changed to RAC25E and RAC32E. ★ When L length is required longer than standard, please specify the boring depth M.
L
M
★ Code No. of RAC25 and RAC32 are changed to RAC25E and RAC32E. e.g. BT40-RAC25-135 → BT40-RAC25-135E 12-RAC25- 55 → 12-RAC25- 55E
High Pressure Coolant Through Tool
59
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