PRECISION TAPERLESS TWO–STEP CORE PINS(NO DRAFT ANGLE CORE PINS) –SHAFT DIAMETER (D) SELECTION TYPE–
Precision
0.01mm increments
0.1mm increments
Part Number
Part Number
High Speed Steel SKH51
L
A
H
ℓ max.
Material code
M Material H Hardness
F
Y V
X
W C R
Step2 Shape
Step1
min.
max.
min.
max.
Step1 Material Step2 Shape D
1
Die Steel SKD61
0.50
3
1.5
S C G T R B
2
100.00
4 5 6
S
SKD61 48–52HRC
0.70
SZ
2.5
NAK80
CB CC CD CE
B C D E
Refer to the work- ing limits shown in the stan- dard draw- ing
3
C
B
CB
Only Step2 D is designated
Only Step1 CE is designated
Only Step1 CD is designated 0.1 ≦ X ≦ 1.0 and X ＜ D–V 2
Only Step2 E is designated
3.5
1.00
7
DH2F
4
120.00
ℓ ≦ 10 × A and ℓ ≦ 35
4.5
G
C
SZ
CC
8
F ≧ 12.00
5
1.50
14.00
SKH51 58–60HRC
D ＞ V
V ＞ A
SV
5.5 6 6.5 7
V–A 2
V–A 2
Pre-hardened Steel
R ≦
9
C ＜
T
D
SV
CD
W ≧ 0.2 and
120.00
and 0.1 ≦ C ≦ 1.0
and R ≧ 0.2
PROVA400 Pre-hardened Steel
10
D–V 2
Only for material SV 150.00
W ≦
R
E
CE
Step1 (shape for first step)
Shape (Tip shape)
Step2 (shape for second step) B
2.00
8
11 15 18 21 25
Stainless Steel SUS440C
10 13 16
B
Step2
Shape
CB
S (Not processed)
Select a step shape from the Step 2 drawings on the right
Select a tip shape from the Shape drawings on the right
R ≦ 0.3
R ≦ 0.1
MAS1C
F ≧ 28.00
5.00
20 30.00
R ≦ 0.1
Order Part Number – L – F – Y – V – A – X/W – C/R – Tip size (K/S/G/Q) – G0.5 CDSZDG 6 –58.42 –F42.00–Y49.00–V4.30 –A2.00 –X0.5 –C0.5 –K30 CESVET 5.5–60.50–F40.10–Y51.00–V4.60–A3.30–W0.2 –R0.3 –K30 – S1.0 CBSZBS 3.5–40.00 –F20.50–Y31.00–V2.80 –A2.50 CCSVCC 5 –52.05 –F35.68–Y44.00–V3.85 –A3.35
α = 0
0 ＋ 0.01
4mm
L
JIS (6/8mm)
T ＝ 4
－ 0.02 0
ℓ
F Y L
＋ 0.01 0
⒧
10mm
F
C (C chamfering)
0 ＋ 0.01
Delivery Quotation
Y
Free Designation
± 0.02 G
45 ° ± 30 ′
L
(Y–F) ≧ 0.4
(L–Y) ≧ 0.4 +α
Part Number – L – F (FC) – Y – V – A – X/W – C/R – Tip size (K/S/G/Q) – (KC/WKC … etc.) CBSVDS6 – 88.50 – F65.00 – Y80.00 – V4.50 – A3.50 – C0.3 – WKC3.0
D (P) –0.01 –0.02 D (P) 0
0.1 ≦ G ＜ A/2 0.05mm increments α = G
Alterations
CC
C
R ≦ 0.3
Step2 Shape
Alteration details D P.365
＋ 0.01 0
Ks ＝ 45 °
± 30 ′
L
–0.005
R ≦ 0.1
Alterations Code
Spec.
Alterations Code
Spec.
Z ＝ 45 ° ± 30 ′
D (P) 0
–0.003
TRN Relief under the head
Single flat cutting D/2 ≦ KC ＜ H/2
G (Cone)
KC
KC － 0.01 0
(Makes plate chamfering unnecessary)
Total Length Designation
T ＝ 4 － 0.02 0
ℓ R ≦ 0.1
K ° ± 30 ′
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 30 ≦ AC ≦ 60 E Step1 Available for CC/CD E Step1 When CC: Y−F ≧ (D−V)/2 tan AC° + 0.3 E Step1 When CD: V + 2 (X × tanAC°) ＜ D
＋ 0.01 0
ℓ
Shaft Diameter / Total Length Designation Free Designation
F
F Y L
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
A15
NHC
0 － 0.01
0 ＋ 0.01
About designation unit for key flat cutting
WKC
8
20 ＜ K ≦ 60 1° increments α = A 2tanK
Y
－ 0.05 0
L
Varied dimension flat cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
D–V 2
(Y–F) ≧
+ 0.3
L
KAC KBC
AC °
－ 0.01 KBC 0
－ 0.01 0
(L–Y) ≧ V–A 2
KAC
+ 0.3 +α
(1)When specifying the key flat cutting according to shaft diameter Unit of designation 0.05mm increments possible
TiCN Coating
AC
CD
D
T (Tapered)
Two Step Shape
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
X ± 0.05
R ≦ 0.3
Shape
RKC
Step2
QC
RKC － 0.01 0
Changes R (normally ≦ 0.1) to R ≦ 0.05 E Step1 Available for CB Changes R (normally ≦ 0.1) to R ≦ 0.05 E Step2 Available for B
Ks ＝ 45 °
QC
S
± 30 ′
± 0.02
Designation method QC
A 2tanK
K ° ± 30 ′
± 0.05 C
0.1 ≦ S ＜
Z ＝ 45 °
R ≦ 0.1
± 30 ′
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
0.05mm incre- ments 0 ＜ K ≦ 45 1° increments α = S
RC
0 － 0.01
DKC
DKC
RC
0 ＋ 0.01
Designation method RC
R ≦ 0.1
L
－ 0.02 0
T ＝ 4
Four flats cutting D/2 ≦ SKC ＜ H/2
(2)When designating arbitrary Key flat dimensions Unit of designation 0.1mm
SKC
Standard Z = 45° can be specified as an angle 30 ≦ AGC ≦ 60 E Step2 Available for C/D E Step2 When C: L−Y ≧ (V−A)/2 tan AGC° + 0.3 +α E Step2 When D: A + 2 (C × 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 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
＋ 0.01 0
ℓ
F Y L
－ 0.01 SKC 0
ℓ
AGC °
F
R (R chamfering)
AGC
0 ＋ 0.01
Y
AG ° ± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 0 ＜ AG ＜ 360 AG = 1° increments
± 0.1 Q
0 °
KGC
(Y–F) ≧ X + 0.3
L
(L–Y) ≧ C + 0.3 +α
KGC
FC
120 ° 120 °
CE
E
F FC
0.2 ≦ Q ＜ A/2 0.1mm increments α = Q
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.01 120 ° 0
R ≦ 0.3
KTC
Shape
Step2
W ± 0.1
＋ 0.01 0
L
KTC
± 0.1 R
GVC
Head diameter change HC = 0.1mm increments E D ≦ HC ＜ H E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
GS
F GB
B (Spherical processed)
HC
SR ＝ A/2
－ 0.02 0
T ＝ 4
ℓ
F Y L
＋ 0.01
Head diameter change (precision) HCC = 0.1mm increments E D + 0.5 ≦ HCC ＜ H–0.3
ℓ
F
0
HCC
＋ 0.01
Y
0
0 － 0.05 L
α = A/2
Head thickness change TC = 0.1mm increments E 1.5 ≦ TC ＜ 4 (Dimensions L, Y, F remain unchanged) E 4–TC ≦ Lmax.–L
(Y–F) ≧ W + 0.3
L
(L–Y) ≧ R + 0.3 +α
0
TC
TC
－ 0.02
E Refer to the Shape drawing for L tolerance
4
403
404
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