PRECISION TWO–STEP CORE PINS –SHAFT DIAMETER (P) 0.005mm DESIGNATION TYPE–
Precision
0.01mm increments
0.1mm increments
0.01mm increments 0.005mm increments
Part Number
Part Number
High Speed Steel SKH51
H
L
ℓmax.
M Material H Hardness
Material code
min. P max.
F Y A V
J Emin.
C R G Q
Step 2
Step 1
min. max.
Step1 Material Step2 No.
1.5
1.000– 1.495 1.500– 1.995 2.000– 2.495 2.500– 2.995 3.000– 3.495 3.500– 3.995 4.000– 4.495 4.500– 4.995 5.000– 5.495 5.500– 5.995 6.000– 6.495 6.500– 6.995 7.000– 7.995 8.000– 9.995 10.000–12.995 13.000–15.995
0.50
3 4 5 6
Die Steel SKD61
2
A × 6 ( P × 6 for
0.70
Step1 CA ) and 50.00
2.5
100.00
CA CB CC CD CE
A B C D E
SKD61 48 – 52HRC
ZB
3
NAK80
CA CB CC CD CE
A B C D E
3.5
1.00
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 D is designated 0.1 ≦ G ≦ 0.5 and G ≦ V–J 2
Only Step2 E is designated Q ≧ 0.2 and Q ≦ V–J 2
7
P ＞ A ≧ V Step1 When CA is selected, no designation is necessary for A
ZB
A ≧ V ＞ J
V ＞ J ≧ E
4
Refer to the work- ing limits shown in the standard drawing
120.00
DH2F
4.5
8
Step1 When CA is
5
1.50
F ≧ 12.00
14.00
5.5
selected, P ＞ V ＞ J
SKH51 58 – 60HRC
9
VB
6
Pre-hardened Steel
A × 6 + 5 ( P × 6 + 5 for Step1 CA ) and 50.00
120.00
6.5
10
VB
PROVA400 Pre-hardened Steel
2.00
7 8
Step2 Designation of V ＝ E pos- sible when A is selected.
C □ VB □ only 150.00
Step2 No need to designate J when A is selected
11 15 18 21 25
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
CA
R ≦ 0.3
A
(V ＝ E Designation Possible)
Step2 Select a step shape from the drawings on the right
16.000–19.995 F ≧ 28.00
20 30.00
5.00
MAS1C
Order PartNumber– L – P – F – Y – A – V – J – E –C/R–G/Q CBVBB6 – 62.10 – P5.555 – F42.00 – Y53.25 – A5.20 – V4.70 – J4.10 – E3.50 CDVBA8 – 70.00 – P7.255 – F43.50 – Y55.32 – A5.00 – V4.50 – E4.00 – C0.5 CEVBE6 – 55.75 – P5.980 – F43.50 – Y48.76 – A5.00 – V4.80 – J3.80 – E3.00 – R0.4 – Q0.4
4mm
JIS (6/8mm)
＋ 0.05
ℓ
F 0
0 ＋ 0.05
Y
Y
10mm
＋ 0.01
F ＋ 0 . 5 ≦ Y
L 0
Y ＋ 0 . 5 ≦ L
Delivery Quotation
Free Designation
B
0 － 0.02
T ＝ 4
CB
R ≦ 0.3
Step2
R ≦ 0.2
PartNumber – L – P – F(FC) – Y – A – V – J – E – C/R – G/Q – (KC/WKC … etc.) CEVBA5 – 56.50 – P4.800 – F48.00 – Y52.00 – A4.20 – V4.10 – E2.80 – R0.3 – RKC2.4
D (P) –0.01 –0.02 D (P) 0
R ≦ 0.2
Alterations
–0.005
Alteration details D P.365
Alterations Code
Spec.
Alterations Code
Spec.
D (P) 0
–0.003
＋ 0.01
ℓ
F 0
Head diameter change HC = 0.1mm increments E P ≦ HC ＜ H
0 ＋ 0.01 Y
Single flat cutting P/2 ≦ KC ＜ H/2
Y
KC
Total Length Designation
KC － 0.01 0
＋ 0.01
HC
F ＋ 0 . 7 ≦ Y
L 0
Y ＋ 0 . 7 ≦ L
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
Shaft Diameter / Total Length Designation Free Designation
0
T ＝ 4
C
CC
Two flats cutting P/2 ≦ WKC ＜ H/2
R ≦ 0.3
－ 0.02
Step2
WKC
Z ＝ 45 °
± 30 ´
0 － 0.01
WKC
R ≦ 0.2
Head diameter change (precision) HCC = 0.1mm increments E P + 0.5 ≦ HCC ＜ H−0.3
Ks ＝ 45 ° ± 30 ´
HCC
Varied dimension flat cutting P/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
KAC KBC
TiCN Coating
－ 0.01 KBC 0
－ 0.01 0
KAC
Head thickness change TC = 0.1mm increments
(1)When specifying
E 1.5 ≦ TC ＜ 4
P － A
Two Step Shape
TC
0
the key flat cutting according to shaft diameter Unit of designation 0.0025mm increments possible
F ＋
＋ 0 . 5 ≦ Y 2
TC
－ 0.02
＋ 0.01
(Dimensions L, Y, F remain unchanged) E 4–TC ≦ Lmax.–L Relief under the head (Makes plate chamfering unnecessary)
ℓ
0 ＋ 0.01
R ≦ 0 . 2
F 0
Y
Two flats (right angled) cutting P/2 ≦ RKC ＜ H/2
4
RKC
RKC － 0.01 0
When AC alteration is used
Y
2tanAGC ° V － J Y ＋ ＋ 0 . 5 ≦L When AGC alteration is used
P － A
2 V － J Y ＋ ＋ 0 . 5 ≦ L
＋ 0.01
F ＋
＋ 0 . 5 ≦ Y
L 0
TRN
2tanAC °
Three flats cutting P/2 ≦ DKC ＜ H/2
Details of part ③
Details of part ①
DKC
0 － 0.02
T ＝ 4
D
R ≦ 0.3
CD
Step2
0 － 0.01
C ± 0.05
①
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 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 F dimension becomes shorter than Fmin. and L dimension becomes shorter than L min. too. FC ≧ 5mm E It can be designated up to Lmin. = 6.5mm E Step2 Available for C/D 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
DKC
DKC
C
G ± 0.05
Ks ＝ 45 ° ± 30 ´
A15
R ≦ 0.2
NHC
Z ＝ 45 °
± 30 ´
8
Four flats cutting P/2 ≦ SKC ＜ H/2
SKC
－ 0.01 SKC 0
R ≦ 0.2
AC°
R ≦ 0.2
(2)When designating arbitrary key flat dimensions Unit of designation 0.1mm
AG °
± 0.5
Two flats (angled) cutting P/2 ≦ KGC ＜ H/2 0 ＜ AG ＜ 360 AG = 1° increments
AC
ー A 2
C ＜ P
＋ 0.01
ℓ
0 °
F 0
KGC
C ≦ 1 . 0 F ＋ C ＋ 0 . 5 ≦ Y 2 P ー A C ＝
③
CC Step1
KGC
0 ＋ 0.01
AGC °
Y
Y
120 ° 120 °
＋ 0.01
Y ＋ G ＋ 0 . 5 ≦ L
L 0
AGC
Three flats cutting at 120° P/2 ≦ KTC ＜ H/2
－ 0.01 120 ° 0
KTC
Details of part ④
Details of part ②
T ＝ 4
0
R ≦ 0.3
CE
－ 0.02
E
KTC
Step2
②
R ± 0.1
FC
FC
Q ± 0.1
F
Q
GVC
GS
＋ 0.01
ℓ
F 0
F GB
P － A 2
F ＋ R ＋ 0 . 5 ≦ Y 0 . 2 ≦ R ≦
④
0 ＋ 0.01
Y
Y
＋ 0.01
L 0
Y ＋ Q ＋ 0.5 ≦ L
E Refer to the Step2 drawing for Y tolerance
409
410
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