EXTRA PRECISION ONE–STEP CORE PINS –SHAFT DIAMETER (P) 0.001mm DESIGNATION 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
0.01mm increments 0.001mm increments 0.01mm increments 0.005mm increments 0.1mm increments
Part Number
M Material H Hardness
Part Number
High Speed Steel SKH51
H
L
F
ℓ max.
Type
Step
Shape
min. P max.
A Vmin.
C
R
Type Step Shape No. min.
max.
min.
max.
1
0.800– 0.999 1.000– 1.499 1.500– 1.999 2.000– 2.499 2.500– 2.999 3.000– 3.499 3.500– 3.999 4.000– 4.499 4.500– 4.999 5.000– 5.499 5.500– 5.999 6.000– 6.499 6.500– 6.999 7.000– 7.999 8.000– 9.999 10.000–12.999
Die Steel SKD61
1A
3
Not processed
Designation is unnecessary when tip processing is not required
1.5
1A
0.500
Only Step 1D is designated
Only Step 1E is designated
2
4 5 6
C G T R B
1B
2.5
NAK80
3
0.700
1B
P ＞ A ≧ V
L– ℓ min.
SKH51 58–60HRC
3.5
1C
CPMB–
P – A 2
A × 6 ( Step P × 6 for 1A ) and ℓ ≦ 50
7
C ＜
DH2F
C G T R B
4
P – A 2
1.000
R ≦
4.5
E ℓmin. Refer to Step drawing
Step 1A P ＞ V
1D
CPMB–
1C
14.00 100.00
12.00
8
and ※ 0.1 ≦ C ≦ 4.0 ※ When CVC code is used 0.10 ≦ CVC ≦ 1.00
5
and R ≧ 0.2
1.500
5.5
No designation necessary for A
Pre-hardened Steel
9
1E
6
1D
PROVA400 Pre-hardened Steel
6.5
10
7 8
2.000
Shape (Tip shape: V is a dimension before tip processing.)
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
E Step 1E No.1 is P ≧ 0.900
Select a tip shape from the drawings on the right
MAS1C
Part Number – L – P – F – A – V – C/R – Tip size (K/S/G/Q) CPMB–1A 5 – 42.00 – P4.650 – F36.50 – V3.800 CPMB–1BC6 – 48.55 – P5.865 – F40.00 – A5.000 – V4.500 – G0.8 CPMB–1DR5.5 – 52.60 – P5.480 – F41.10 – A4.900 – V4.600 – C0.2 – Q0.5
α＝ 0
Order
4mm
JIS (6/8mm)
＋ 0.01 0
T ＝ 4
0
－ 0.02
L
ℓ
＋ 0.02 0
F
10mm
L
Quotation
ℓ≧ 0 . 5 ＋α
Delivery
C
(C chamfered)
0 . 1 ≦ G ＜ V / 2 Designation 0.05mm unit α＝ G θ＜ 45 °
Free Designation
± 0.02
G
45 ° ± 30 ´
R ≦ 0.2 （θ≦ 5 ° R ≦ 0.1 ）
1B
R ≦ 0.3
Part Number – L – P – F (FC) – A – V (VC) – C (CVC)/R – Tip size (K/S/G/Q) – (KC/WKC … etc.) CPMB–1A 5 – 42.00 – P4.650 – F36.50 – V3.800 – KC2.4 CPMB–1DC6 – 51.00 – P5.755 – F40.05 – A3.200 – V3.050 – CVC0.25 – G0.6 – HC8
Shape
θ
Alterations
D (P) –0.01 –0.02 D (P) 0
Alteration details D P.365
Alterations Code
Spec.
Alterations Code
Spec.
–0.005
G
＋ 0.01 0
Single flat cutting P/2 ≤ KC < H/2
TRN Relief under the head
L
KC
D (P) 0
KC － 0.01 0
–0.003
(No need for plate chamfering)
T ＝ 4 － 0.02 0
ℓ
＋ 0.01 0
G
(Cone)
F
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 For 1D, C ≦ 1.0, A + 2(C × tanAC) ＜ P C dimension can be designated at 0.01mm increments E 0.10 ≦ CVC ≦ 1.00 E Available for Step 1D E CVC ＜ (P−A)/2 X Combination with AC not available
Total Length Designation
Two flats cutting P/2 ≤ WKC < H/2
A15
About Designation Unit for Key Flat Cutting
NHC
WKC
L
ℓ≧ 0 . 7 ＋α
± 30 ´ K °
0 － 0.01
8
θ
WKC
Shaft Diameter / Total Length Designation Free Designation
Designation 1° unit 20 ＜ K ≦ 60 α＝ 2tanK V
R ≦ 0.2 （θ≦ 5 ° R ≦ 0.1 ）
R ≦ 0.3
Varied width parallel flats cutting P/2 ≤ KAC < H/2 KBC = 0.1mm increments only KAC < KBC < H/2
1C
Shape
AC °
KAC KBC
Ks ＝ 45 °± 30 ′
AC
－ 0.01 KBC 0
－ 0.01 0
θ＜ K
KAC
0
L － 0.05
TiCN Coating
(1) To align the key flat with the shaft diameter Unit of designation 0.0005mm increments possible
CVC ± 0.02
45 °
Two flats (right angled) cutting P/2 ≤ RKC < H/2
CVC
RKC
RKC － 0.01 0
Two Step Shape
T (Tapered)
P ー A ℓ≧
T ＝ 4 － 0.02 0
＋ 0 . 5 ＋α
0 . 1 ≦ S ＜
S ± 0.02
V 2tanK
2
ℓ
θ
＋ 0.01 0
No.
Vmin.
VCmin.
F
± 30 ´ K °
DKC Three flats cutting P/2 ≦ DKC ＜ H/2
When AC alteration is used
1–1.5 3.5–4
0.500 0.400 1.000 0.700 1.500 1.000 2.000 1.500
Designation 1° unit 10 ≦ K ≦ 45 α＝ S θ＜ K Designation 0.05mm unit
Vmin. is enlarged VC = 0.005mm increments E ℓ ≦ A×5, ℓ ≦ 50 (P × 5 for Step 1A) E P ＞ A ≧ VC
2tanAC P ー A ℓ≧ ＋
L
0 － 0.01
0 . 5 ＋α
DKC
DKC
5.5
VC
6–10
X R egarding No. = 2–3, 4.5, 5 and 13, Vmin. is the machining limit and VC cannot be used
R ≦ 0.3
1D
C ± 0.05
Four flats cutting P/2 ≤ SKC < H/2
Shape
SKC
－ 0.01 SKC 0
Ks ＝ 45 ° ± 30 ′
＋ 0.01 0
(2) To designate
L
C
R ≦ 0.2
arbitrary key flat dimensions Unit of designation 0.1mm
R ≦ 0.2 （θ≦ 5 ° R ≦ 0.1 ）
AG °
F dimension becomes shorter than Fmin. Make L dimension shorter than Lmin. too. FC ≧ 5mm E It can be designated up to Lmin. = 6.5mm
± 0.5
Two flats (angled) cutting P/2 ≦ KGC ＜ H/2 0 ＜ AG ＜ 360 AG = 1° increments
R (R chamfered)
0 °
FC
KGC
Designation 0.1mm unit 0 . 2 ≦ Q ＜ V / 2 α＝ Q
FC F
KGC
Q ± 0.1
T ＝ 4 － 0.02 0
⇨ L
Full length tolerance alteration L + 0.01 0 + 0.005 0 (L designation in 0.005mm increments possible) E Available when 1.500 ≦ P ≦ 5.000 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 P ≧ 2.00 E 2 ≦ GS ≦ 10 GS + 2 ≦ GB ≦ 30 Fmin. ≦ F−GB Range of designation and Designation method: D P.366
120 ° 120 °
＋ 0.01 0
ℓ
ℓ≧ C ＋ 0 . 5 ＋α
F
Three flats cutting at 120° P/2 ≦ KTC ＜ H/2
－ 0.01 120 ° 0
LKC
KTC
Q
2 P ー A
L
1C Step
L
C ＝
KTC
＋ 0.01 0
L
R
± 0.1
R ≦ 0.3
Head diameter change HC = 0.1mm increments E P ≦ HC ＜ H
1E
Shape
GVC
HC
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
B
(Spherical processed)
GS
F GB
SR
Head diameter change (precision) HCC = 0.1mm increments E P + 0.5 ≦ HCC ＜ H–0.3
α＝ V / 2
HCC
T ＝ 4 － 0.02 0
＋ 0.01 0
ℓ
F
0
Head thickness change TC = 0.1mm increments E 1.5 ≦ TC ＜ 4 (Dimensions L and F remain unchanged) E 4–TC ≦ Lmax.–L
ℓ≧ R ＋ 0 . 5 ＋α P ≧ 0 . 900
－ 0.05 L
L
TC
0
TC
－ 0.02
4
(Calculation of tip gradient θ D P.1193 )
E Refer to the Shape drawing for L tolerance
387
388
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