TWO–STEP CORE PINS –SHAFT DIAMETER (P) 0.01mm DESIGNATION / SHAFT DIAMETER TOLERANCE 0
Standard
–0.005 TYPE–
E Products and sizes mentioned in green letters will be discontinued after materials go out of stock.
0.01mm increments
0.1mm increments
Part Number
Part Number
High Speed Steel SKH51
H
L
ℓ max.
min. P max.
F Y A V
J Emin.
C R G Q
M Material H Hardness
Material code
Step 2
Step 1
min. max.
Step1 Material Step2 No.
1.5
1.00–1.49 1.50– 1.99 2.00– 2.49 2.50– 2.99 3.00– 3.49 3.50– 3.99 4.00– 4.49 4.50– 4.99 5.00– 5.49 5.50– 5.99 6.00– 6.49 6.50– 6.99 7.00– 7.99 8.00– 9.99 10.00–12.99 13.00–15.99
0.50
3 4 5 6
20.00 25.00 30.00 35.00 40.00 45.00
Die Steel SKD61
NAK80 37–43HRC DH2F 38–42HRC SKD61 48–52HRC SKH51 58–60HRC SUS440C 56–60HRC MAS1C 50–54HRC
KB
2
0.70
2.5
100.00
A B C D E
CA CB CC CD CE
KB GB PB HB WB YB (P ≦ 2.49)
CA CB CC CD CE
A B C D E
GB
3
NAK80
3.5
1.00
7
PB
Only Step1 CD is designated 0.1 ≦ C ≦ 1.0 and C ＜ P–A 2
Only Step1 CE is designated R ≧ 0.2 and R ≦ P–A 2
Only Step2 E is designated Q ≧ 0.2 and Q ≦ V–J 2
Only Step2 D is designated 0.1 ≦ G ≦ 0.5 and G ＜ V–J 2
A ≧ V ＞ J
P ＞ A ≧ V
V ＞ J ≧ E
Refer to the working limits shown in the standard drawing
4
120.00
DH2F
4.5
8
HB
5
1.50
Step1 When CA is
Step1 When CA is selected, no designation is necessary for A
F ≧ 10.00
12.00
5.5
9
selected, P ＞ V ＞ J
WB
6
Pre-hardened Steel
120.00
6.5
10
YB
PROVA400 Pre-hardened Steel
2.00
7 8
60.00
Step2 Designation of V ＝ E pos- sible when A is selected.
11 15 18 21
Step2 No need to designate J when A is selected
C □ HB □ only 150.00
10 13 16
Step1 (shape for first step) select from CA–CE below
Step2 (shape for second step)
Stainless Steel SUS440C
2.50
T ＝ 4
－ 0.02 0
A
(V ＝ E Designation Possible)
CA
R ≦ 0.3
PB HB
Step2 Select a step shape from the drawings on the right
≧ 28.00
20 30.00
16.00–19.99 F
5.00
25
MAS1C
4mm
Order PartNumber– L – P – F – Y – A – V – J – E –C/R–G/Q CBHBB 6 – 62.10 – P5.55 – F42.00 – Y53.25 – A5.20 – V4.70 – J4.10 – E3.50 CDWBA 8 – 70.00 – P7.25 – F43.50 – Y55.32 – A5.00 – V4.50 – E4.00 – C0.5 CEPBE 6 – 55.75 – P5.98 – F43.50 –Y48.76– A5.00 – V4.80 – J3.80 – E3.00 – R0.4 – Q0.4
JIS (6/8mm)
＋ 0.05
ℓ
F 0
0 ＋ 0.05
Y
10mm
Y
＋ 0.02
F ＋ 0.5 ≦ Y
Y ＋ 0 . 5 ≦ L
L 0
Free Designation
Delivery Quotation
0 － 0.02
B
T ＝ 4
CB
R ≦ 0.3
Step2
R ≦ 0.2
D (P) –0.01 –0.02 D (P) 0
R ≦ 0.2
PartNumber– L – P – F – Y – A – V – J – E – C/R – G/Q –(KC/WKC … etc.) CEGBA5 – 56.50 – P4.80 – F48.00 – Y52.00 – A4.20 – V4.10 – E2.80 – R0.3 – RKC2.4
Alterations
–0.005
Alteration details D P.365
D (P) 0
–0.003
Alterations Code
Spec.
Alterations Code
Spec.
＋ 0.02
ℓ
F 0
0 ＋ 0.02
Head diameter change HC = 0.1mm increments E P ≦ HC ＜ H
Y
Y
Total Length Designation
Single flat cutting P/2 ≦ KC ＜ H/2
KC
＋ 0.02
F ＋ 0 . 7 ≦ Y
L 0
KC － 0.01 0
Y ＋ 0 . 7 ≦ L
HC
Shaft Diameter / Total Length Designation Free Designation
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
About designation unit for key flat cutting
0
T ＝ 4
C
CC
R ≦ 0.3
－ 0.02
Step2
Z ＝ 45 °
± 30 ´
Two flats cutting P/2 ≦ WKC ＜ H/2
WKC
R ≦ 0.2
Ks ＝ 45 ° ± 30 ´
0 － 0.01
WKC
Head diameter change (precision) HCC = 0.1mm increments E P + 0.5 ≦ HCC ＜ H−0.3
HCC
TiCN Coating
Varied dimension flat cutting P/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
KAC KBC
－ 0.01 KBC 0
－ 0.01 0
KAC
Head thickness change TC = 0.1mm increments E 1.5 ≦ TC ＜ 4 (Dimensions L, Y, F remain unchanged) E 4–TC ≦ Lmax.–L Relief under the head (Makes plate chamfering unnecessary)
Two Step Shape
P － A
(1)When specifying the key flat cutting according to shaft diameter Unit of designation 0.005mm increments possible
F ＋
＋ 0 . 5 ≦ Y
0 ＋ 0.02
＋ 0.02
R ≦ 0.2
ℓ
F 0
TC
0
2
Y
TC
－ 0.02
Two flats (right angled) cutting P/2 ≦ RKC ＜ H/2
Y
When AC alteration is used
4
2tanAGC V － J ＋ 0 . 5 ≦ L When AGC alteration is used Y ＋
RKC
RKC － 0.01 0
P － A
2 V － J Y ＋ ＋ 0 . 5 ≦ L
＋ 0.02
L 0
F ＋
＋ 0 . 5 ≦ Y
2tanAC
TRN
Details of part ①
0 － 0.02
Details of part ③
T ＝ 4
R ≦ 0.3
Three flats cutting P/2 ≦ DKC ＜ H/2
CD
D
Step2
DKC
C ± 0.05
①
C
0 － 0.01
G ± 0.05
Numbering at the back part of the head Range of designation and Designation method: D P.365 E Available when H ≧ 2 X Combination with SKC not available Standard Ks = 45° can be specified as an angle AC = 1° increments E Available for Step1 CC/CD E 30 ≦ AC ≦ 60 E Step1 When CD: A + 2 (C × tanAC) ＜ P
DKC
DKC
Ks ＝ 45 ° ± 30 ´
R ≦ 0.2
Z ＝ 45 °
A15
± 30 ´
NHC
8
Four flats cutting P/2 ≦ SKC ＜ H/2
SKC
－ 0.01 SKC 0
R ≦ 0.2
R ≦ 0.2
AC °
P － A 2
(2)When designating arbitrary key flat dimensions Unit of designation 0.1mm
C ＜
AG °
± 0.5
Two flats (angled) cutting P/2 ≦ KGC ＜ H/2 0 ＜ AG ＜ 360 AG = 1° increments
＋ 0.02
ℓ
AC
F 0
C ≦ 1 . 0 F ＋ C ＋ 0 . 5 ≦Y 2 P ー A C ＝
0 °
KGC
③
CC Step1
0 ＋ 0.02
Y
Y
KGC
Y ＋ G ＋ 0 . 5 ≦ L
＋ 0.02
AGC °
Standard Z = 45° can be specified as an angle AGC = 1° increments E 30 ≦ AGC ≦ 60 E Step2 When D: J + 2 (G × tanAGC) ＜ V
L 0
120 ° 120 °
E Step2 Available for C/D
Three flats cutting at 120° P/2 ≦ KTC ＜ H/2
AGC
－ 0.01 120 ° 0
Details of part ②
Details of part ④
T ＝ 4
0
KTC
R ≦ 0.3
CE
－ 0.02
E
②
Step2
KTC
R ± 0.1
Gas vent machining GS/GB = 1mm increments E Available when P ≧ 2.00 E 2 ≦ GS ≦ 10 GS + 2 ≦ GB ≦ 30 Fmin. ≦ F−GB Range of designation and Designation method: D P.366
Q ± 0.1
GVC
GS
F GB
Q
＋ 0.02
ℓ
F 0
0 ＋ 0.02
P － A 2
④
Y
0 . 2 ≦ R ≦
Y
＋ 0.02
Y ＋ Q ＋ 0 . 5 ≦ L
L 0
F ＋ R ＋ 0 . 5 ≦ Y
E Refer to the Step2 drawing for Y tolerance
405
406
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