EXTRA PRECISION ONE–STEP CORE PINS –SHAFT DIAMETER (D) SELECTION TYPE–
Extra precision
E When exceeds the working limit of tip (ℓ) dimension,(Refer to the Step drawing lower right) c "Details of the tip (ℓ) short type" D posted on Web only
0.005mm increments 0.1mm increments
0.01mm increments
Part Number
M Material H Hardness
Part Number
High Speed Steel SKH51
H
L
F
ℓ max.
Type
Step
Shape
A Vmin.
C
R
Type Step Shape D min.
max.
min.
max.
1
Die Steel SKD61
1A
3
(Not processed)
Designation is unnecessary when tip processing is not required
1.5
1A
0.500
Only Step 1E is designated
2
4 5 6
C G T R B
Only Step 1D is designated
1B
2.5
NAK80
3
0.700
1B
D ＞ A ≧ V
L– ℓ min.
SKH51 58–60HRC
3.5
1C
CPM–
A × 6
7
C G T R B
D–A 2
DH2F
4
C ＜
D–A 2
1.000
R ≦
( Step D × 6 for 1A ) and ℓ ≦ 50
4.5 5 5.5
E ℓmin. Refer to the Step drawing
Step 1A D ＞ V
1D
CPM–
1C
14.00
100.00 12.00
8
and ※ 0.1 ≦ C ≦ 4.0 ※ When CVC code is used 0.10 ≦ CVC ≦ 1.00
and R ≧ 0.2
1.500
No designation necessary for A
Pre-hardened Steel
9
1E
6
1D
PROVA400 Pre-hardened Steel
6.5 7
10
2.000
Shape (Tip shape: V is a dimension before tip processing.)
8
11 15 18
Step type selected from 1A–1E below
Stainless Steel SUS440C
1E
10 13
R ≦ 0.3
No need to designate Shape if no tip processing is required
(Not processed)
1A
Shape Select a tip shape from the drawings on the right
MAS1C
Part Number – L – F – A – V – C/R – Tip size (K/S/G/Q) CPM–1A 5 – 58.00 – F40.00 – V4.500 CPM–1CC6.5 – 54.50 – F48.35 – A5.500 – V5.300 – G0.5 CPM–1ET 4 – 42.00 – F35.00 – A3.200 – V3.100 – R0.4 – K35 – S1.0
Order
α＝ 0
4mm
JIS (6/8mm)
＋ 0.01 0
T ＝ 4
0 － 0.02
L
ℓ
＋ 0.02 0
Quotation
F
Delivery
10mm
L
ℓ≧ 0 . 5 ＋α
C
(C chamfered)
0 . 1 ≦ G ＜ V / 2 Designation 0.05mm unit α＝ G θ＜ 45 °
Free Designation
Part Number – L – F (FC) – A – V (VC) – C (CVC)/R – Tip size (K/S/G/Q) – (KC/WKC … etc.) CPM–1DC6 – 50.00 – F40.00 – A5.000 – V3.100 – CVC0.10 – G1.0 – HC8.0 CPM–1A 5 – 58.00 – F50.00 – V4.000 – NHC–23
G
± 0.02
Alterations
1B
R ≦ 0.2 （θ≦ 5 ° R ≦ 0.1 ）
45 ° ± 30 ´
R ≦ 0.3
Shape
θ
Alteration details D P.365
D (P) –0.01 –0.02 D (P) 0
Alterations Code
Spec.
Alterations Code
Spec.
–0.005
TRN Relief under the head
Single flat cutting D/2 ≦ KC ＜ H/2
G
KC
KC － 0.01 0
＋ 0.01 0
(No need for plate chamfering)
L
D (P) 0
–0.003
T ＝ 4 0
－ 0.02
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° increment E Available for Step 1C/1D E 30 ≦ AC ≦ 60 X Combination with CVC not available E Step When 1D, C ≦ 1.0, A + 2 (C × tanAC) ＜ D C dimension can be designated at 0.01mm increments E 0.10 ≦ CVC ≦ 1.00 E Available for Step 1D E CVC ＜ (D–A)/2 X Combination with AC not available
＋ 0.01 0
ℓ
G
(Cone)
F
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
A15
Total Length Designation
About Designation Unit for Key Flat Cutting
NHC
0 － 0.01
8
L
ℓ≧ 0 . 7 ＋α
WKC
± 30 ´ K °
θ
Shaft Diameter / Total Length Designation Free Designation
Designation 0.1mm unit 20 ＜ K ≦ 60 α＝ 2tanK V
R ≦ 0.2 （θ≦ 5 ° R ≦ 0.1 ） Ks ＝ 45 ° ± 30 ´
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC < KBC < H/2
R ≦ 0.3
1C
AC °
KAC KBC
Shape
AC
－ 0.01 KBC 0
－ 0.01 0
KAC
θ＜ K
(1)To align the key flat with the shaft diameter Unit of designation 0.05mm increments possible
0 － 0.05
L
TiCN Coating
CVC ± 0.02
45 °
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
CVC
RKC － 0.01 0
Two Step Shape
T
(Tapered)
T ＝ 4 － 0.02 0
D ー A ℓ≧
＋ 0 . 5 ＋α
V 2tanK
S ± 0.02
0 . 1 ≦ S ＜
2
ℓ
＋ 0.01 0
θ
D
Vmin.
VCmin.
F
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
± 30 ´ K °
When AC code is used
1–1.5 3.5–4
0.500 0.400 1.000 0.700 1.500 1.000 2.000 1.500
Vmin. is enlarged VC = 0.005mm increments E ℓ ≦ A × 5, ℓ ≦ 50 (D × 5 for Step 1A) E D ＞ A ≧ VC
Designation 1° unit 10 ≦ K ≦ 45 α＝ S θ＜ K Designation 0.05mm unit
2tanAC D ー A ℓ ≧ ＋
0 － 0.01
L
0 . 5 ＋α
DKC
DKC
5.5
VC
6–10
X Regarding D = 2–3, 4.5, 5 and 13, Vmin. is the machining limit and VC cannot be used
R ≦ 0.3
1D
Four flats cutting D/2 ≦ SKC ＜ H/2
C ± 0.05
Shape
SKC
－ 0.01 SKC 0
(2) To designate
Ks ＝ 45 ° ± 30 ´
＋ 0.01 0
L
arbitrary key flat dimensions Unit of designation 0.1mm
C
R ≦ 0.2 R ≦ 0.2 （θ ≦ 5 ° R ≦ 0.1 ）
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 0 < AG < 360 AG = 1° increments
F dimension becomes shorter than Fmin. Make L dimension shorter than Lmin. too. FC ≧ 5 mm E It can be designated up to Lmin. = 6.5mm
R
(R chamfered)
0 °
KGC
FC
Designation 0.1mm unit 0 . 2 ≦ Q ＜ V / 2 α＝ Q
FC F
KGC
Q ± 0.1
T ＝ 4
0
－ 0.02
120 ° 120 °
⇨ L
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
Full length tolerance alteration L + 0.01 0 + 0.005 0 (L designation in 0.005 mm increments possible) E Available when 1.5 ≦ D ≦ 5 X Combination with FC not available E No Shape machining Available for C/T/R 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≧ C ＋ 0 . 5 ＋α
－ 0.01 120 ° 0
ℓ
F
KTC
Q
2 D ー A
LKC
L
1C Step
C ＝
KTC
L
＋ 0.01 0
Head diameter change HC = 0.1mm increments E D ≦ HC ＜ H
L
R
± 0.1
R ≦ 0.3
1E
Shape
HC
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
SR B (Spherical processed)
GVC
GS
F GB
Head diameter change (precision) HCC = 0.1mm increments E D + 0.5 ≦ HCC ＜ H–0.3
HCC
α＝ V / 2
T ＝ 4 0
－ 0.02
Head thickness change TC = 0.1mm increments
＋ 0.01 0
ℓ
F
0 － 0.05 L
E 1.5 ≦ TC ＜ 4
TC
0
TC
－ 0.02
(Dimensions L and F remain unchanged) E 4−TC ≦ Lmax.−L
L
ℓ≧ R ＋ 0 . 5 ＋α
4
(Calculation of tip gradient θ D P.1193 )
E Refer to the Shape drawing for L tolerance
375
376
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