High Speed Steel SKH51 D 0 –0.005
ONE–STEP CENTER PINS –SHAFT DIAMETER (D) SELECTION TIP (A/V) TOLERANCE : ± 0.005 / ± 0.01 TYPE–
Precision
Standard
E To specify the shaft diameter, refer to the shaft diameter specification type on D P.293 .
Type
Flange thickness 4 mm
Flange thickness JIS
Flange thickness (T)
T Tolerance D
Designation 0.01 mm unit
0.1 mm unit
Applicable ejector sleeve hole diameter tolerance + 0.005 0 E Note that for sleeves with V dimen- sion tolerance of 0 –0.005 , combina- tion with center pins that have shaft diameter tolerance + 0.01 0 is not recommended. The reason for this in the fitting sections of H7 ejector sleeve are longer. Details D P.219
4 mm JIS (6/8 mm) Nitriding Die Steel SKD61 High Speed Steel SKH51 Die Steel SKD61 +
Type
Type
ℓ max.
Step Shape D
H T H T
L
F
A Vmin.
C/R
Flange thickness 4 mm
Flange thickness JIS
CPH –5
1 70.00 – 200.00
15 20 25 30 35 40 45
4 mm (T4)
0.50
3
3
No need to designate if no tip processing is required
1.5
CPV –5
70.00 – 250.00
2
4 5 6
4 5 6 7
0 –0.005
0.70
4
Step D only 0.1 ≦ C ≦ 1.5 and C ＜ D–A 2 Step E only R ≧ 0.3 and R ≦ D–A 2
2.5
CPHJ–5
3
4/6/8 mm (JIS)
Range of guaranteed shaft diameter precision (Details D P.221 ) Range of guaranteed base material hardness (details D P.223 )
M material SKH51 H hardness 58 – 60 HRC
3.5
1.00
CPVJ–5
A B C D E
C G T R B
70.00 – 300.00
7
4
D ＞ A ≧ V Step A If selected, no need to designate A
8
4.5
CPH–5 CPV–5
CPHJ–5 CPVJ–5
1.50
8
Shape (Tip shape: V is a dimension prior to tip machining.)
F ≧ 50.00
5
4
Step (step shape) Select from A – E in the figure below
9
5.5
6
9
6
10
No need to designate Shape if no tip processing is required
R ≦ 0.5 （ D ≦ 2
R ≦ 0.3 ）
Step A
(Not processed)
Select from the figure on the right
Shape
D (P) –0.01 –0.02
6.5 7
50
10
11
70.00 – 350.00
2.00
D (P) 0
8 9
11 14 15 17
13 14 15 17
α＝ 0
–0.005
8
10 12
Total Length Designation Shaft Diameter(P) Total Length Designation
－ 0.02 0
T
L
＋ 0.05
ℓ
E Step E is D ≧ 1.5 E For ℓmin., refer to the standard diagram
ℓ ≧ 0 . 5 ＋α
F
0
（ L ＞ 200
）
＋ 0.02 L 0
＋ 0.05
Type – L – F – A – V – C (R) – Tip dimension (K/S/G/Q) CPH–5EC 6 – 350.00 – F330.00 – A5.00 – V4.50 – R0.5 – G2.0
L
0 . 5 ≦ G ＜ V / 2 Designation 0.1 mm unit α＝ G θ＜ 45 ° (Calculation of θ D P.1193 )
C
0
(C chamfered)
Order
Two– stepshape
± 0.05
G
45 ° ± 30 ´
B
R ≦ 0.2
R ≦ 0.5 （ D ≦ 2
R ≦ 0.3 ）
Shape
Step
θ
Steppedon –step
Quotation
Delivery
Stepped two–step
– Tip dimension (K/S/G/Q) – (KC/WKC … etc.)
Type
–L–F–A–V–C(R)
G
0 T － 0.02
L
Alterations
–
KC3.0
CPH–5EC 6 – 350.00 – F330.00 – A5.00 – V4.50 – R0.5 –
G2.0
Alteration details D P.287
＋ 0.05
F ＋ 0.02 0
ℓ
（ F ＞ 200
）
F
G
(Cone)
ℓ ≧ 0 . 7 ＋α
0
Details
Alteration Code
Details
Alteration Code
（ L ＞ 200 ＋ 0.02 L 0
＋ 0.05
）
L
0
± 30 ´ K °
θ
Changes the flange diameter HC = Designation 0.1 mm unit E D ≦ HC ＜ H, D ≧ 1.5 E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
Designation 0.1 mm unit 20 ＜ K ≦ 60 α＝ 2tanK V θ＜ K (Calculation of θ D P.1193 )
R ≦ 0.2
R ≦ 0.5 （ D ≦ 2
R ≦ 0.3 ）
Shape
C
Precision single flat cutting D/2 ≦ VKC ＜ H/2
Step
VKC
HC
Ks ＝ 45 °
VKC － 0.02 0
± 0.05
L
Changes the flange diameter (precision) HCC = Designation 0.1 mm unit E D+0.5 ≦ HCC ＜ H−0.3 Changes the flange thickness TC = Designation 0.1 mm unit E T/2 ≦ TC ＜ T, D ≧ 1.5 (Dimensions L, F remains unchanged) E T−TC ≦ Lmax.−L Dowel hole boring E Available when H ≧ 4 X C ombination except for NHC/NHN/AC/RR not available Dowel hole boring + Spring pin driving E Available when H ≧ 4 X Combination except for NHC/NHN/AC/RR not available
VWC Precision two flats cutting D/2 ≦ VWC ＜ H/2
HCC
When AC alteration is used D － A ＋ ℓ ≧
0
T
0 － 0.02
(Tapered)
0 . 5 ＋α
0 . 1 ≦ S ＜
T － 0.02
V 2tanK
VWC
2 D － A ＋ 2tanAC
S ± 0.05
ℓ
＋ 0.05
（ F ＞ 200
＋ 0.02
）
θ
F
F
Designation 0.1 mm unit
0
0
± 30 ´ K °
（ L ＞ 200
＋ 0.02 L 0
＋ 0.05
ℓ ≧
0 . 5 ＋α
）
L
0
Single flat cutting D/2 ≦ KC ＜ H/2
Designation 1° unit 20 ＜ K ≦ 45 α＝ S θ＜ K
KC
TC
0
－ 0.02 TC
KC － 0.1 0
About designation unit for key flat cutting
T
R ≦ 0.5 （ D ≦ 2
R ≦ 0.3 ）
Shape
D
± 0.05 C
R ≦ 0.2 R ≦ 0.2
Step
C
Ks ＝ 45 °
(Calculation of θ D P.1193 )
＋ 0.1
L
T d ℓ 4 2 3 6 3 5 8
d 0
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
NC
Designation 0.1 mm unit 0 . 2 ≦ Q ＜ V / 2 α＝ Q
0 － 0.1
R
(R chamfered)
WKC
T
(1) To align the key flat with the shaft diameter Designation unit 0.05 mm unit is allowed
0
Q ± 0.1
T － 0.02
Varied dimensions parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = Designation 0.1 mm unit only KAC ＜ KBC ＜ H/2
T d ℓ 1 4 2 5 6 3 8
d
KAC KBC
＋ 0.05
F ＋ 0.02 0
ℓ
NCW
（ F ＞ 200
）
F
－ 0.1 0
－ 0.1 0
ℓ ≧ C ＋ 0 . 5 ＋α
0
KAC
KBC
T
（ L ＞ 200 ＋ 0.02 L 0
＋ 0.05
）
L
Q
0
Numbering on the head Designation range and method: D P.288 E Available when H ≧ 2 Automatic sequential numbering on the head Designation range and method: D P.288 E Available when H ≧ 2 Standard Ks = 45° can be specified as an angle AC ＝ designation 1° unit E 30 ≦ AC ≦ 60 E Step Applicable to C/D X Combination with RR not available E Step For D, C ≦ 1.0, A + 2 (C × tanAC°) ＜ D
L
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
217
E
RKC
NHC
R ≦ 0.5 （ D ≦ 2
R ≦ 0.3 ）
Shape
Step
(2) To designate arbitrary key flat dimensions Designation unit 0.1 mm
± 0.1 R
RKC － 0.1 0
B
(Spherical processed)
SR
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
1
2
3
NHN
0 － 0.1
DKC
DKC
α＝ V / 2
0
T － 0.02
＋ 0.05
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = Designation 1° unit 0 ＜ AG ＜ 360
F ＋ 0.02 0
ℓ
（ F ＞ 200
± 0.5 AG °
）
F
ℓ ≧ R ＋ 0 . 5 ＋α
AC °
0
0 °
KGC
AC
L ± 0.05
（ L ＞ 200 ＋ 0.02 L 0
＋ 0.05
）
L
0
KGC
Step (Step shape A/V/Ks) T tolerance
Changes R (normally 0.2 or less) to R0.3–0.5 (for Strength improvement) Designation method RR E Step Applicable to B/C/D E D−A ≧ 1.0 Step For D, C ≧ 0.5
120 ° 120 °
RR
Three flats cutting 120° distribution D/2 ≦ KTC ＜ H/2
Type
－ 0.1 120 ° 0
KTC
RR
Step A Step B
Step C
Step D
Step E
Group
KTC
Flange thickness 4 mm
Flange thickness JIS
V
A/V
A/V
Ks
A/V
Ks
A
V
Standard CPH–5 □ Precision CPV–5 □
CPHJ–5 □ CPVJ–5 □
± 0.01 ± 0.005
± 0.01 ± 0.005
± 0.01 ± 0.005
± 1° ± 30´
± 0.01 ± 0.005
± 1° ± 30´
± 0.01 ± 0.005
± 0.02
289
290
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