EXTRA PRECISION TAPERLESS ONE–STEP CORE PINS (NO DRAFT ANGLE CORE PINS) –SHAFT DIAMETER (D) SELECTION TYPE–
Extra precision
0.001mm increments
0.1mm increments
0.01mm increments
Part Number
M Material H Hardness
High Speed Steel SKH51
Part Number
H
L
F
A
ℓ max.
C
R
Type
Step
Shape
Type
Step Shape D min.
max.
min.
max.
min.
max.
1
Die Steel SKD61
3 4 5 6 7
1.5
S C G T R B
0.500
S
2
Only Step E is designated
Only Step D is designated
B C D E
2.5
NAK80
3
0.700
C
B C D E
L – ℓ min.
3.5
SKH51 58–60HRC
CPMS–
4
ℓ ≦ 12 × A and ℓ ≦ 35
DH2F
G
1.000
D−A 2
D−A 2
4.5 5 5.5 6.5 7 6
E ℓmin. Refer to Step drawing
R ≦
C ＜
D ＞ A
CPMS –
14.00 100.00 12.00
8
T
1.500
and R ≧ 0.2
and ※ 0.1 ≦ C ≦ 4.0 ※ When CVC code is used 0.10 ≦ CVC ≦ 1.00
9
Pre-hardened Steel
R
10 11 15 18
PROVA400 Pre-hardened Steel
2.000
8
B
10 13
Shape (Tip shape)
Select step (step type) from B–E figures shown below
Stainless Steel SUS440C
B
S (Not processed)
Part Number – L – F – A – C/R – Tip size (K/S/G/Q) CPMS–BS 4 – 45.55 – F40.00 – A3.500 CPMS–CC 6 – 52.30 – F42.50 – A4.600 – G1.0
R ≦ 0.3
R ≦ 0.1 （ When RC code is used R ≦ 0.05 ）
MAS1C
Order
Shape Select a tip shape from the drawings on the right
CPMS–DG 5 – 48.62 – F37.55 – A4.000 – C0.2 – K30 CPMS–ER 6.5 – 55.65 – F42.35 – A4.500 – R0.5 – Q0.5
＋ 0.01 0
4mm
L
α=
0
JIS (6/8mm)
Quotation
Delivery
T ＝ 4
0
－ 0.02
10mm
＋ 0.01 0
ℓ
C (C chamfering)
F
Part Number – L – F (FC) – A (AAC) – C (CVC/R – K/S/G/Q – (KC/WKC … etc.) CPMS–DC6 – 65.00 – F55.00 – A3.505 – C0.5 – G0.5 – RC –KC3.0 CPMS–DS5 – 50.00 – F38.00 – A2.000 – C0.3 – – TRN
Free Designation
E ℓ ≧ 0.4 +α
L
Alterations
± 0.02 G
When RC code is used ℓ ≧ 0.35 +α
45 ° ±
0.1 ≦ G ＜ A/2 0.05mm increments α= G
30 ′
Alteration details D P.365
D (P) –0.01 –0.02 D (P) 0
Alterations Code
Spec.
Alterations Code
Spec.
R ≦ 0.1 （ When RC code is used R ≦ 0.05 ） （ When AC code is used R ≦ 0.2 ）
C
R ≦ 0.3
Shape
–0.005
＋ 0.01 0
Single flat cutting D/2 ≦ KC ＜ H/2
TRN Relief under the head
L
Ks ＝ 45 °
KC
± 30 ′
KC － 0.01 0
(No need for plate chamfering)
D (P) 0
–0.003
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 + 0.005 0 (L designation in 0.005mm increments possible) E Available when 1.5 ≦ D ≦ 5 X Combination with FC not available E Available for Shape S/C/T/R Full length tolerance alternation L + 0.01 0 L
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
Total Length Designation
G (Cone)
A15
NHC
0 － 0.01
WKC
8
Shaft Diameter / Total Length Designation Free Designation
About Designation Unit for Key Flat Cutting
± 30 ′ K °
T ＝ 4
－ 0.02 0
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC < KBC < H/2
D−A 2
KAC KBC
＋ 0.01 0
20 ＜ K ≦ 60 1° increments α= A 2tanK
E ℓ ≧
+ 0.3 +α
ℓ
－ 0.01 KBC 0
－ 0.01 0
F
KAC
LKC
(1) To align the key flat with the shaft diameter
When AC code is used
L
－ 0.05 L 0
L
D−A 2tanAC° ＋ 0.3 ＋α
TiCN Coating
ℓ ≧
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
RKC － 0.01 0
Unit of designation 0.05mm increments possible
D
A min. 0.500 1.000 1.500
AAC min.
Two Step Shape
D
T (Tapered)
1–1.5 3.5–4
0.400 0.700 1.000
Extends the working limit of A min. E AAC = 0.001mm increments E ℓ ≦ 10 × AAC
0.1 ≦ S ＜ A 2tanK 0.05mm increments 0 ＜ K ≦ 45 1° increments α= S
R ≦ 0.1 R ≦ 0.1 When AC code is used R ≦ 0.2 When RC code is used R ≦ 0.05 When AC code is used R ≦ 0.2
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
R ≦ 0.3
5.5
AAC
± 0.02 S
C ± 0.05
Shape
6–13 1.500 X In case of No. = 2–3, 4.5 and 5, Amin. is the machining limit, and AAC cannot be used. 2.000
K °
0 － 0.01
± 30 ′
Ks ＝ 45 ° ± 30 ′
DKC
DKC
(2) To designate arbitrary key flat dimensions
C
Four flats cutting D/2 ≦ SKC ＜ H/2
SKC
Changes R (normally ≦ 0.1) to R ≦ 0.05 Designation method RC E Available for Step B/C/D
＋ 0.01 0
－ 0.01 SKC 0
RC
45 °
Unit of designation 0.1mm
L
RC
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 0 ＜ AG ＜ 360 AG = 1° increments
0 T ＝ 4 － 0.02
D−A 2 ⇨ Step C
E C =
0 °
KGC
R (R chamfering) Q
C dimension can be designated at 0.01mm increments E 0.10 ≦ CVC ≦ 1.00 E CVC = 0.01 mm increments E Available for Step D X Combination with AC not available Standard Ks = 45° can be specified as an angle AC = 1°increments E Available for Step C/D E 30 ≦ AC ≦ 60 X Combination with CVC/RC not available E When Step D, C ≦ 1.0, A + 2 (C × tanAC°) ＜ D
＋ 0.01 0
CVC ± 0.02
E ℓ ≧ C + 0.3 +α
ℓ
45 °
KGC
F
CVC
± 0.1
When CVC code is used ℓ ≧ CVC ＋ 0.3 ＋α
120 ° 120 °
L
0.2 ≦ Q ＜ A/2 0.1mm increments α= Q
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.01 120 ° 0
KTC
E
KTC
AC °
R ≦ 0.3
AC
＋ 0.01 0
± 0.1 R
Shape
L
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.
HC
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
B (Spherical processed)
FC
F FC
SR ＝ A/2
Head diameter change (precision) HCC = 0.1mm increments E D + 0.5 ≦ HCC ＜ H–0.3
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
HCC
T ＝ 4 － 0.02 0
GVC
＋ 0.01 0
GS
ℓ
F
F GB
α= A/2
Head thickness change TC = 0.1mm increments E 1.5 ≦ TC ＜ 4 (Dimensions L and F remain unchanged) E 4–TC ≦ Lmax.–L
0 － 0.05 L
L
0
TC
TC
－ 0.02
E ℓ ≧ R + 0.3 +α
4
377
378
E Refer to Shape drawing for L tolerance
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