HSK BALANCE-CUT BORING ARBOR （ RAC-K ）
Balance cut boring bar executes boring in 2 cartridge inserts absorbing the vibration each other. The faster the feed rate, the better swarf ejection. This is Ideal for rough and medium boring.
Double Cutting Capability
P.256
Boring Range D
Boring Depth M
Spacer Code No.̶
Shank Code No.
Weight (kg)
TAPER
Code No.
C
C 1
Fig
Tip No.
Head Code No.
HSK100A-Q12- 95 -Q12-125 -Q12- 95 -Q16-125N -Q16-155 -Q16-125N
HSK100A-RAC 25-150K -180K -195K -RAC 32-180K
67 105 112 77 110 122 97 130 142 157 117 182 177 202 232 262 225 290 315
3.9 4.1 4.0 4.6 4.8 4.8 4.9 5.0 5.3 5.4 6.1 6.2 6.8 8.7 9.1
1
25 ～ 32
12-RAC 25- 55K
24
15
SP12-12-45̶
2
SC09
1
32 ～ 45
16-RAC 32- 55K
-210K -225K -RAC 43-180K -195K 225K -240K -RAC 53-210K -240K -270K -RAC 70-255K -285K -315K -RAC100-225K
50
31
SP16-16-45̶
2
-Q20-110 -Q20-125 -Q20-110 -Q20-110 -Q26-140 -Q26-170N -Q26-140 -Q34-170 -Q34-200 -Q34-170 -Q42-125 -Q42-190 -Q42-125
1
20-RAC 43- 70K
43 ～ 55
60
40
SP20-20-45 SP20-20-60̶
2
HSK100A
1
53 ～ 70
26-RAC 53- 70K
65
53
SC12
SP26-26-60̶
2
1
70 ～ 100
34-RAC 70- 85K
80
64
SP34-34-60̶
10.1 11.7 11.7 15.1
2
1
100 ～ 130
42-RAC100-100K
-290K -315K
83
83
SP42-42-90
2
★ “ C ” grade （ Coated ） inserts are supplied as standard with the head. P.67 for head. ★ For centre through coolant type, please add “ -C ” at the end of Code No. e.g. HSK100A-RAC53-210K-C ★ For HSK40A or 50A , modular connection system is applied. Please refer P.267 for Base Holder. ★ HSK100A-RAC100-375K, 425K and 475K are also available. ★ Lubrication Pipe is optional. Please refer P.298 P.256 Please refer ★ Please refer P.267 for base holder, P.90 for spacer and
P.106 for cutting condition.
Insert tip for RAC-K
● : best ● : good
● ● ●
Steel Stainless Steel Cast Iron Aluminium
Please add the grade indication into ○ , and add the insert tip material indication at the end off the Code No. e.g. SC12-C8 （ AC630M ）
Material
●
Coated Carbide M
Coated Carbide K
Code No. Nose R Material Grade
C
AC630M
AC410K
Dimension
Applicable Arbor
2.38
7 °
RAC25K, RAC32K
SC09- ○ 4 0.4
●
●
φ 3.4
7.94
SCMT070204N
4.76
7 °
SC12- ○ 8 0.8
●
●
RAC43K-RAC100K
φ 5.5
12.7
SCMT120408N
★ Minimum order quantity : 10pcs.
256
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