PRECISION TWO–STEP CORE PINS –SHAFT DIAMETER (D) SELECTION TYPE–
Precision
0.01mm increments
0.1mm increments
Part Number
Part Number
High Speed Steel SKH51
H
L
ℓmax.
M Material H Hardness
Material code
F
Y A V
J Emin.
C R G Q
Step 1
Step 2
min.
max.
Step1 Material Step2 D
1
Die Steel SKD61
A × 6
0.50
3
1.5
( Step1 D × 6
for CA )
2
4 5 6
CA CB CC CD CE
A B C D E
SKD61 48–52HRC
0.70
100.00
Z
2.5
NAK80
CA CB CC CD CE
A B C D E
and ℓ ≦ 50
D ＞ A ≧ V
A ≧ V ＞ J
V ＞ J ≧ E
3
3.5 4 4.5
1.00
Refer to the working limits shown in the standard drawing
Only Step1 CD is designated 0.1 ≦ C ≦ 1.0 and C ＜ D–A 2
Only Step1 CE is designated R ≧ 0.2 and R ≦ D–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
Step1 When CA is selected, no designation is necessary for A
Step1 When CA is
DH2F
Z
120.00
selected, D ＞ V ＞ J
8
F ≧ 12.00
5
1.50
14.00
SKH51 58–60HRC
V
5.5 6 6.5 7
Pre-hardened Steel
A × 6 + 5 ( Step1 D × 6 + 5 for CA ) and ℓ ≦ 50
9
V
Step2 Designation of V ＝ E pos- sible when A is selected.
120.00 C □ V □ only 150.00
PROVA400 Pre-hardened Steel
Step2 No need to designate J when A is selected
10
2.00
8
11 15 18 21 25
Step1 (shape for first step) select from CA–CE below
Step2 (shape for second step)
Stainless Steel SUS440C
10 13 16
T ＝ 4 － 0.02 0
(V ＝ E Designation Possible)
A
CA
R ≦ 0.3
2.50
Step2 Select a step shape from the drawings on the right
MAS1C
F ≧ 28.00
5.00
20 30.00
4mm
Order PartNumber– L – F – Y – A – V – J – E –C/R–G/Q CAZA 5 – 56.50 – F48.00 – Y52.00 – V4.20 – E2.80 CCZD 5.5 – 49.95 – F35.00 – Y40.00 – A4.50 – V4.30 – J3.50 – E3.20 – G0.3 CEVE 6 – 55.75 – F43.50 – Y48.76 – A5.00 – V4.80 – J3.80 – E3.00 – R0.4 – Q0.4
JIS (6/8mm)
0 ＋ 0.05
ℓ
F
0 ＋ 0.05
Y
Y
10mm
0 ＋ 0.01
Y ＋ 0 . 5 ≦ L
F ＋ 0 . 5 ≦ Y
L
Free Designation
Delivery Quotation
B
T ＝ 4 － 0.02 0
CB
R ≦ 0.3
Step2
R ≦ 0.2
D (P) –0.01 –0.02 D (P) 0
R ≦ 0.2
Part Number – L – F (FC) – Y – A – V – J – E – C/R – G/Q – (KC/WKC … etc.) CEZA5 – 56.50 – F48.00 – Y52.00 – A4.20 – V4.10 – E2.80 – R0.3 – RKC2.5
Alterations
–0.005
Alteration details D P.365
D (P) 0
–0.003
0 ＋ 0.01
ℓ
F
Alterations Code
Spec.
Alterations Code
Spec.
0 ＋ 0.01
Y
Y
Head diameter change HC = 0.1mm increments E D ≦ HC ＜ H
Total Length Designation
Single flat cutting D/2 ≦ KC ＜ H/2
0 ＋ 0.01
F ＋ 0 . 7 ≦ Y
KC
L
Y ＋ 0 . 7 ≦ L
KC － 0.01 0
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.
T ＝ 4 － 0.02 0
R ≦ 0.3
C
CC
Step2
Z ＝ 45 ° ± 30 ´
About designation unit for key flat cutting
Two flats cutting D/2 ≦ WKC ＜ H/2
R ≦ 0.2
WKC
Ks ＝ 45 °
0 － 0.01
± 30 ´
WKC
Head diameter change (precision) HCC = 0.1mm increments E D + 0.5 ≦ HCC ＜ H–0.3
HCC
TiCN Coating
Varied dimension flat cutting D/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)
D － A
Two Step Shape
R ≦ 0.2
0 ＋ 0.01
0 ＋ 0.01
F ＋
＋ 0 . 5 ≦ Y 2
ℓ
(1)When specifying
F
Y
TC
0
TC
－ 0.02
the key flat cutting according to shaft diameter
Y
2tanAGC V−J Y ＋ ＋ 0 . 5 ≦ L When AGC alteration is used
When AC alteration is used
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
4
RKC
＋ 0.01
D － A
2 V － J Y ＋ ＋ 0 . 5 ≦ L
L 0
RKC － 0.01 0
F ＋
＋0.5≦ Y
2tanAC
Unit of designation 0.05mm increments possible
TRN
T ＝ 4 － 0.02 0
Details of part ①
R ≦ 0.3
D
CD
Step2
Details of part ③
C ± 0.05
Three flats cutting D/2 ≦ DKC ＜ H/2
①
DKC
C
G ± 0.05
0 － 0.01
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) ＜ D 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 D ≧ 2 E 2 ≦ GS ≦ 10 GS + 2 ≦ GB ≦ 30 Fmin. ≦ F−GB Range of designation and Designation method: D P.366
Ks ＝ 45 °
Z ＝ 45 ° ± 30 ´
DKC
DKC
R ≦ 0.2
± 30 ´
A15
NHC
8
Four flats cutting D/2 ≦ SKC ＜ H/2
SKC
－ 0.01 SKC 0
R ≦ 0.2
－ A 2
AC °
R ≦ 0.2
C ＜ D
(2)When designating arbitrary key flat dimensions Unit of designation 0.1mm
0 ＋ 0.01
ℓ
F
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 0 ＜ AG ＜ 360 AG = 1° increments
AC
C ≦ 1 . 0 F ＋ C ＋ 0.5 ≦ Y 2 D ー A C ＝
③
CC Step1
0 °
0 ＋ 0.01
Y
KGC
Y
0 ＋ 0.01
L
KGC
AGC °
Y ＋ G ＋ 0 . 5 ≦ L Details of part ④
120 ° 120 °
AGC
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.01 120 ° 0
T ＝ 4 － 0.02 0
Details of part ②
R ≦ 0.3
E
CE
KTC
Step2
②
R ± 0.1
KTC
Q ± 0.1
FC
FC
F
Q
0 ＋ 0.01
ℓ
GVC
F
GS
D － A 2
④
0 ＋ 0.01 Y
F GB
0 . 2 ≦ R ≦
Y
＋ 0.01
F ＋ R ＋ 0 . 5 ≦ Y
L 0
Y ＋ Q ＋ 0 . 5 ≦ L
E Refer to the Step2 drawing for Y tolerance
401
402
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