ZMAC ADVANCED BORING SYSTEM CUTTING DATA
Selection of Insert Tip for each material.
Material
100 ～ 400m/min. (Dry or Wet cutting)
Steel
Coated T A ℓ N
80 ～ 150m/min. (Wet cutting)
Stainless Steel
150 ～ 250m/min. (Dry or Wet cutting)
Cast Iron
100 ～ 150m/min. (Dry or Wet cutting)
Hardened Steel
CBN
High Speed finish for Cast Iron
400 ～ 1000m/min. (Dry or Wet cutting)
Wet Cutting
K grade Carbide Diamond Please use ZMAC -V head for Diamond. P.76
Wet cutting
Aluminium, Non-ferrous metal
K grade carbide Please use RAC Head for Aluminium. Please refer P.68
Recommended Cutting Speed ◎… Best ○… Good －… Unsuitable
Hardened Steel SCM SKD SUJ
Insert
Inter- rupted Cutting
SS41
S55C
SCM SKD SC FC,FCD SUS AL,ALC
Code No.
Grade
○ 150 ～ 250
-
-
-
-
C
Coated
100 ～ 400 150 ～ 400 150 ～ 400 80 ～ 150
◎ 60 ～ 100 80 ～ 150
○ 40 ～ 80 80 ～ 150
○ 60 ～ 100 - - - 200 ～ 400 100 ～ 400 ○ 100 ～ 400
○ 60 ～ 100
○ 80 ～ 120
○ 40 ～ 100
◎
-
-
-
-
-
P10
E
○ 400 ～ 1000
-
-
-
-
-
- -
- -
- -
K10
◎ ○
F
60 ～ 130
-
- -
Diamond Coated Carbide M Coated Carbide K Cermet CBN
T B
80 ～ 150 -
120 ～ 180
200 ～ 400
200 ～ 400
80 ～ 150
-
-
-
- -
100 ～ 150
70 ～ 100
120 ～ 150
300 ～ 800
-
-
-
-
-
-
- -
- -
- -
D
400 ～ 2000 -
○ 80 ～ 150
○ 150 ～ 250
150 ～ 400 ○ 150 ～ 400
80 ～ 150 ○ 80 ～ 150
○ 150 ～ 400 150 ～ 400
80 ～ 150 ○ 80 ～ 150
C
-
-
-
-
80 ～ 150
150 ～ 250
★ Existing Inserts (Cermet,P grade Carbide & K grade Carbide) are available. ★ The cutting speed is recommended to be reduced to 50% for the interrupted cutting. ★ When L/D is longer, the insert tip with small Nose R is recommended. ★ When L/D is longer, the feed rate at the entrance is recommended to be reduced to 60 to 70%. Recommended Cutting Condition (removal,feed)
In case of CBN insert, reduce L/D as small as possible : MAX. 3 times.
Stock removal on diameter. D < 32mm : less than 0.25mm D > 32mm : less than 0.3mm Feed per rev. depends on NoseR and accuracy required.
Boring Range Type
MAX. Condition
Removal mm/ φ Feed mm/rev. Feed mm/rev. Removal mm/ φ Best Condition MAX. Condition
Best Condition
Removal mm/ φ 0.2 ～ 0.4 0.2 ～ 0.4 0.2 ～ 0.4 0.2 ～ 0.4 0.2 ～ 0.5 0.2 ～ 0.5 0.2 ～ 0.8 0.2 ～ 0.8
Feed mm/rev. Removal mm/ φ Feed mm/rev.
φ 16 ～ 20 φ 20 ～ 25 φ 25 ～ 32 φ 32 ～ 42 φ 42 ～ 55 φ 55 ～ 70 φ 70 ～ 85 φ 85 ～
0.05 ～ 0.07 0.05 ～ 0.07 0.05 ～ 0.07 0.05 ～ 0.08 0.05 ～ 0.08 0.05 ～ 0.08 0.05 ～ 0.1 0.05 ～ 0.1
ZMAC16-V ZMAC20-V ZMAC25-V ZMAC32-V ZMAC42-V ZMAC55-V ZMAC70-V ZMAC85-V~
0.1 0.1 0.1 0.2 0.2 0.2
1.0 1.5 2.0 2.0 4.0 4.0 4.0 4.0
(Feed per rev.) 2 8 × NoseR
Logical Surface Finish :
1.0 ～ 3.0 1.0 ～ 3.0 1.0 ～ 3.0 1.0 ～ 4.0 1.0 ～ 4.0
0.1 ～ 0.15 0.1 ～ 0.15 0.1 ～ 0.15 0.1 ～ 0.2 0.1 ～ 0.2
5.0 5.0 5.0 8.0 8.0
0.2 0.2 0.2
0.25 0.25
0.25 0.25
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