PRECISION TAPERLESS ONE–STEP CORE PINS (NO DRAFT ANGLE CORE PINS) –SHAFT DIAMETER (D) SELECTION TYPE–
Precision
0.01mm increments
0.1mm increments
Part Number
M Material H Hardness
Part Number
High Speed Steel SKH51
L
F
A
H
ℓ max.
Type
Step
Shape
C
R
max.
min.
max.
min.
max.
Type Step Shape D min.
1
Die Steel SKD61
3
S C G T R B
1.5
0.50
SKD61 48–52HRC
CPZS–
2
100.00
4 5 6
B C D E
2.5
NAK80
Only Step D is designated
Only Step E is designated
3
0.70
S C G T R B
3.5
CPZS–
7
DH2F
B C D E
4
120.00
L– ℓ min.
1.00
ℓ ≦ 12 × A and ℓ ≦ 35
4.5 5 5.5
8
SKH51 58–60HRC
D−A 2
CPVS–
D−A 2
12.00
14.00
E ℓ min. Refer to Step drawing
R ≦
C ＜
D ＞ A
1.50
Pre-hardened Steel
9
6
120.00
and R ≧ 0.2
and ※ 0.1 ≦ C ≦ 4.0 ※ When CVC code is used 0.10 ≦ CVC ≦ 1.00
PROVA400 Pre-hardened Steel
6.5 7
10
CPVS–
CPVS only 150.00
Select Step (step type) from B–E figures shown below
Shape (Tip shape)
2.00
8
11 15 18 21 25
Stainless Steel SUS440C
10 13 16
S (Not processed)
B
R ≦ 0.3
R ≦ 0.1 （ When RC code is used R ≦ 0.05 ）
Shape
MAS1C
Select a tip shape from the drawings on the right
28.00
5.00
20 30.00
Part Number – L – F – A – C/R – Tip size (K/S/G/Q) CPZS– BS4 – 45.55 – F40.00 – A3.50 CPVS– CC6 – 52.30 – F42.50 – A4.60 – G1.0
4mm
Order
＋ 0.01 0
α= 0
JIS (6/8mm)
L
CPZS– DG5 – 48.62 – F37.55 – A4.00 – C0.2 – K30 CPVS– ER6.5 – 55.65 – F42.35 – A4.50 – R0.5 – Q0.5
T ＝ 4
0
－ 0.02
10mm
＋ 0.01 0
C (C chamfering)
F
ℓ
E ℓ ≧ 0.4 +α
Free Designation
Quotation
Delivery
L
± 0.02 G
When RC code is used ℓ ≧ 0.35 +α
45 ° ±
30 ′
D (P) –0.01 –0.02 D (P) 0
0.1 ≦ G ＜ A/2 0.05mm increments α= G
Part Number – L – F (FC) – A (AAC) – C (CVC)/R – K/S/G/Q – (KC/WKC … etc.) CPVS–DC6 – 65.00 – F55.00 – A3.50 – C0.5 – G0.5 – RC – KC3.0 CPVS–DS5 – 50.00 – F38.00 – A2.00 – C0.3 – TRN
Alterations
C
R ≦ 0.1 （ When RC code is used R ≦ 0.05 ） （ When AC code is used R ≦ 0.2 ）
Alteration details D P.365
–0.005
＋ 0.01 0
R ≦ 0.3
Shape
L
Alterations Code
Spec.
Alterations Code
Spec.
Ks ＝ 45 °
D (P) 0
± 30 ′
–0.003
TRN Relief under the head
Single flat cutting D/2 ≦ KC ＜ H/2
KC
G (Cone)
KC － 0.01 0
(No need for plate chamfering)
Total Length Designation
± 30 ′ K °
Shaft Diameter / Total Length Designation Free Designation
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
20 ＜ K ≦ 60 1° increments α= A 2tanK
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
A15
T ＝ 4
－ 0.02 0
D−A 2
NHC
E ℓ ≧
+ 0.3 +α
About Designation Unit for Key Flat Cutting
0 － 0.01
8
WKC
＋ 0.01 0
F
ℓ
When AC code is used
－ 0.05 L 0
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC < KBC < H/2
KAC KBC
D
A min.
AAC min.
D−A 2tanAC°
(1) To align the key flat with the shaft diameter
Extends the working limit of A min. E AAC = 0.01mm increments E ℓ ≦ 10 × AAC
L
－ 0.01 KBC 0
－ 0.01 0
ℓ ≧
+ 0.3 +α
TiCN Coating
1–1.5 3.5–4
0.50 1.00 1.50 2.00
0.40 0.70 1.00 1.50
KAC
5.5
AAC
6–16
Two Step Shape
T (Tapered)
Unit of designation 0.05mm increments possible
D
20 4.00 X In case of D = 2–3, 4.5 and 5, Amin. is the machining limit and AAC cannot be used 5.00
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
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
R ≦ 0.3
RKC － 0.01 0
C ± 0.05
Shape
± 0.02 S
Ks ＝ 45 °
0.1 ≦ S ＜ A 2tanK 0.05mm increments 0 ＜ K ≦ 45 1° increments α= S
± 30 ′
Changes R (normally ≦ 0.1) to R ≦ 0.05 Designation method RC E Available for Step B/C/D
RC
45 °
K °
± 30 ′
RC
C
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
0 － 0.01
DKC
DKC
C dimension can be designated at 0.01mm increments E 0.10 ≦ CVC ≦ 1.00 E CVC = 0.01mm 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 Step When D, C ≦ 1.0 ， A + 2 (C × tanAC°) ＜ D
＋ 0.01 0
L
CVC ± 0.02
45 °
Four flats cutting D/2 ≦ SKC ＜ H/2
(2) To designate arbitrary key flat dimensions
SKC
0 T ＝ 4 － 0.02
CVC
D−A 2
－ 0.01 SKC 0
⇨ Step C
E C =
＋ 0.01 0
R (R chamfering)
E ℓ ≧ C + 0.3 +α When CVC code is used
F
ℓ
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 0 < AG < 360 AG = 1° increments
Unit of designation 0.1mm
Q
L
± 0.1
0 °
KGC
AC °
ℓ ≧ CVC ＋ 0.3 ＋α
AC
KGC
120 ° 120 °
E
0.2 ≦ Q ＜ A/2 0.1mm increments α= Q
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
R ≦ 0.3
－ 0.01 120 ° 0
± 0.1 R
Shape
KTC
＋ 0.01 0
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
L
KTC
FC
F FC
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.
B (Spherical processed)
HC
G as 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
GVC
SR ＝ A/2
GS
T ＝ 4 － 0.02 0
F GB
Head diameter change (precision) HCC = 0.1mm increments E D + 0.5 ≦ HCC ＜ H–0.3
＋ 0.01 0
HCC
E For details of "Steps–Type Round Core Pins (Gas Release)," which is a product similar to alteration GVC, D refer to Misumi–VONA
F
ℓ
L
0 － 0.05 L
Head thickness change TC = 0.1mm increments E 1.5 ≦ TC ＜ 4 (Dimensions L and F remain unchanged) E 4−TC ≦ Lmax.−L
α= A/2
E ℓ ≧ R + 0.3 +α
0
TC
TC
－ 0.02
373
374
4
E Refer to the Shape drawing for L tolerance
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