EXTRA PRECISION TAPERLESS ONE–STEP CORE PINS(NO DRAFT ANGLE CORE PINS) –SHAFT DIAMETER (P) 0.001mm DESIGNATION TYPE–
Extra precision
0.1mm increments
0.01mm increments 0.001mm increments
0.01mm increments 0.001mm increments
Part Number
M Material H Hardness
High Speed Steel SKH51
Part Number
ℓ max.
L
F
A
H
min.P max.
C
R
Type
Step
Shape
Type
Step Shape No. min. max.
min.
max.
min. max.
Die Steel SKD61
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
3 4 5 6 7
S C G T R B
1.5
0.500
S
2
Only Step D is designated
Only Step E is designated
B C D E
2.5
NAK80
3
0.700
C
B C D E
SKH51 58–60HRC
3.5
L– ℓ min. E ℓ min. Refer to Step drawing
CPMBS–
4
DH2F
G
1.000
P–A 2
P–A 2
ℓ≦ 12 × A and ℓ≦ 35
C ＜
R ≦
4.5
P ＞ A
CPMBS–
12.00
14.00 100.00
8
5
T
5.5
1.500
and * 0.1 ≦ C ≦ 4.0 * When CVC code is used 0.10 ≦ CVC ≦ 1.00
and R ≧ 0.2
9
Pre-hardened Steel
6
R
6.5
PROVA400 Pre-hardened Steel
10 11 15 18
7 8
2.000
B
Shape (Tip shape)
Step (step type) Select from B–E in the drawing below
10 13
Stainless Steel SUS440C
B
S (Not processed)
Part Number – L – P – F – A – C/R – Tip size (K/S/G/Q) CPMBS–BS 4 – 45.55 – P3.980 – F40.00 – A3.500 CPMBS–CC 6 – 52.30 – P5.560 – F42.50 – A4.600 – G1.0 CPMBS–DG 5 – 48.62 – P4.770 – F37.55 – A4.000 – C0.2 – K30 CPMBS–ER 6.5 – 55.65 – P6.230 – F42.35 – A4.500 – R0.5 – Q0.5
MAS1C
R ≦ 0.3
Order
R ≦ 0.1 （ RC When RC code is used R ≦ 0.05 ）
Select a tip shape from the drawings on the right
Shape
＋ 0.01 0
4mm
L
α =
0
JIS (6/8mm)
Delivery Quotation
T ＝ 4
0
10mm
－ 0.02
＋ 0.01 0
⒧
C (C chamfering)
F
E ℓ ≧ 0.4 +α
Free Designation
Part Number – L – P – F (FC) – A (AAC) – C (CVC)/R – K/S/G/Q – (KC/WKC … etc.) CPMBS–DC6 – 65.00 – P5.750 – F55.00 – A3.500 – C0.5 – G0.5 –RC –KC3.0 CPMBS–DS5 – 50.00 – P4.895 – F38.00 – A2.000 – C0.3 – – TRN
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 （ RC 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
TRN Relief under the head
Single flat cutting P/2 ≦ KC ＜ H/2
L
KC
Ks ＝ 45 °
KC － 0.01 0
± 30 ′
(Makes plate chamfering unnecessary)
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 1.500 ≦ P ≦ 5.000 X Combination with FC not available E Available for Shape S/C/T/R Overall length tolerance alternation L + 0.01 0 L
WKC Two flats cutting P/2 ≦ WKC ＜ H/2
A15
Total Length Designation
G (Cone)
NHC
0 － 0.01
8
WKC
About designation unit for key flat cutting
Shaft Diameter / Total Length Designation Free Designation
± 30 ′ K °
T ＝ 4
－ 0.02 0
Varied dimension flat cutting P/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
KAC KBC
P–A 2 + 0.3 +α
20 ＜ K ≦ 60 1° increments α = A 2tanK
＋ 0.01 0
－ 0.01 KBC 0
－ 0.01 0
⒧
E ℓ ≧
KAC
F
(1)When specifying key flat cutting according to shaft diameter Unit of designation 0.0005mm increments possible
LKC
When AC code is used
－ 0.05 L 0
L
L
P–A 2tanAC° + 0.3 +α
TiCN Coating
ℓ ≧
Two flats (right angled) cutting P/2 ≦ RKC ＜ H/2
RKC
RKC － 0.01 0
No. A min. AAC min. 1–1.5 0.500 0.400 3.5–4 1.000 0.700 5.5 1.500 1.000 6–13 2.000 1.500 X In case of No. = 2–3/4.5/5, Amin. is the machining limit, and AAC cannot be used.
Two Step Shape
D
T (Tapered)
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
DKC Three flats cutting P/2 ≦ DKC ＜ H/2
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
AAC
R ≦ 0.3
± 0.02 S
C ± 0.05
Shape
0 － 0.01
DKC
DKC
± 30 ′ K °
Ks ＝ 45 °
± 30 ′
(2)When designating arbitrary key flat dimensions
C
Four flats cutting P/2 ≦ SKC ＜ H/2
SKC
－ 0.01 SKC 0
Changes R (normally ≦ 0.1) to R ≦ 0.05 Designation method RC E Step Available for B/C/D
＋ 0.01 0
RC
45 °
L
RC
AG °
Unit of designation 0.1mm
± 0.5
Two flats (angled) cutting P/2 ≦ KGC ＜ H/2 0 ＜ AG ＜ 360 AG = 1° increments
P–A 2 ⇨ Step C
0 °
0 T ＝ 4 － 0.02
KGC
E C =
C dimension can be designated at 0.01mm increments E 0.10 ≦ CVC ≦ 1.00 E CVC = 0.01mm increments E Step Available for D X C ombination with AC not available Standard Ks = 45° can be specified as an angle AC = 1°increments E Step Available for C/D E 30 ≦ AC ≦ 60 X C ombination with CVC/RC not available E When Step D: C ≦ 1.0, A + 2 (C × tanAC°) ＜ P
R (R chamfering)
CVC ± 0.02
KGC
＋ 0.01 0
45 °
E ℓ ≧ C + 0.3 +α When CVC code is used ℓ ≧ CVC + 0.3 +α
⒧
F
CVC
120 ° 120 °
Three flats cutting at 120° P/2 ≦ KTC ＜ H/2
Q
± 0.1
－ 0.01 120 ° 0
L
KTC
0.2 ≦ Q ＜ A/2 0.1mm increments α = Q
KTC
AC °
E
AC
Head diameter change HC = 0.1mm increments E P ≦ HC ＜ H E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
＋ 0.01 0
R ≦ 0.3
± 0.1 R
Shape
L
HC
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
FC
F FC
B (Spherical processed)
Head diameter change (precision) HCC = 0.1mm increments E P+0.5 ≦ HCC ＜ H−0.3
HCC
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
SR ＝ A/2
GVC
0
T ＝ 4
Head thickness change TC = 0.1mm increments E 1.5 ≦ TC ＜ 4 (Dimensions L and F remain unchanged) E 4–TC ≦ Lmax.–L
GS
－ 0.02
F GB
0
TC
＋ 0.01 0
TC
－ 0.02
ℓ
F
α = A/2
4
E P ≧ 0.900 E ℓ ≧ R + 0.3 +α
0 － 0.05 L
L
389
390
E Refer to Shape drawing for L tolerance
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