Precision
High Speed Steel SKH51
PRECISION RECTANGULAR EJECTOR PINS –FREE DESIGNATION TYPE–
P/W 0
With R
–0.005
Free designation
Part Number – L – P – W – R – N – (AKC/AWC … etc.) ERVFR 4 – 200.00 – P2.00 – W0.80 – R0.1 – N150 – AKC 0
High Speed Steel SKH51
Alterations
Alteration details D P.167
Dies Steel SKD61 + Nitrided
Alterations
Code
Spec.
Alterations
Code
Spec.
Head diameter change HC = 0.1mm increments E D + 1 ≦ HC < H
Key flat cutting (angled) AKC = 1° increments E 0 ≦ AKC < 360 E When combined with KSA/WSA, 90° increments only Two parallel flats cutting (angled) AWC = 1° increments E 0 ≦ AWC < 360 E When combined with KSA/WSA, 90° increments only Two right angled flats cutting (angled) ARC = 1° increments E 0 ≦ ARC < 360 E When combined with KSA/WSA, 90° increments only Three flats cutting (angled) ADC = 1° increments E 0 ≦ ADC < 360 E When combined with KSA/WSA, 90° increments only
0 °
0 °
HC
AKC
270 °
90 °
4mm
Head diameter change (precision) HCC = 0.1mm increments E D + 1 ≦ HCC < H–0.3 Head thickness change TC = 0.1mm increments E T/2 ≦ TC < T (Dimensions L and N remain unchanged) E T – TC ≦ Lmax. – L Dowel hole boring NC = 90° increments E Available when H ≧ 4 X Combination with other than NHC/NHN/TMC not available Range of designation/Designation method/ Details of standards: D P.167 Dowel hole + Spring pin driving NCW = 90° increments E Available when H ≧ 4 X Combination with other than NHC/NHN/TMC not available Range of designation/Designation method/ Details of standards: D P.167 Numbering on the head Range of designation/Designation method: D P.168 Automatic sequential numbering on the head Range of designation/Designation method: D P.168
180 °
HCC
JIS (6/8mm)
0 °
0 °
Part Number
T P/W Tolerance
Head Thickness
Top surface 2 places R 4 places R ERVWR ERVFR
AWC
270 °
90 °
P/W 0
–0.01
0 － 0.02 TC
4mm (T4)
TC
ERVJWR ERVWR
ERVJFR ERVFR
180 °
0 –0.005
P/W 0
ERVJWR ERVJFR
T
°
4/6/8mm (JIS)
0
0 °
–0.02
(Top surface 2 places R)
(R in 4 places)
20
ARC
270 °
90 °
P/W 0
（ D ≦ 2 R ≦ 0.3 ） R ≦ 0.5
0 °
–0.005
0 °
(R machining range)
180 °
Step R
± 0.01 R
± 0.01 R
4 － ± 0.01 R
NC
270 °
90 °
P/W 0
0 °
–0.003
0 °
180 °
ADC
270 °
90 °
Standard size
0 － 0.005 P ≧ W
－ 0.005 0
0 － 0.02
T － 0.05 0
（ L ＞ 300
）
180 °
P
P
T
Total Length Designation Free designation
＋ 5 0
0 °
0 °
2 2 W ＋ K P ＝ (Dimension before R-machining) M Material SKH51 H Hardness 58–60HRC Range of guaranteed retention diameter (D) precision/base material hardness/Step R (Details D P.165 )
0 － 5
（ L － N ）
0 °
N
Two flats cutting (angled) KGA = 1° increments E 0 < KGA < 360
＋ 0.02 0
＋ 0.05 0
NCW
KGA
（ L ＞ 200
）
90 °
270 °
90 °
270 °
L
L
180 °
180 °
E R ± 0.01 is the target value for machining. Adjustment with the mounting hole side is required.
90 °
N dimension short
Two flats cutting (angled) KGD = 1° increments E 0 < KGD < 360 E Pay attention to the standard position of 0°.
0 °
KGD
180 °
5 2 3
NHC
D/2
Head thickness 4mm
Head thickness JIS
Angular pin
5
270 °
Part Number
0.01mm increments
N 1mm increments
Rectangular R dimension
Shoulder cutting (1 plate) KSA = 0.1mm increments E W/2 + 0.1 ≦ KSA ≦ D/2–0.1 Shoulder cutting (2 parallel plates) WSA = 0.1mm increments E W/2 + 0.1 ≦ WSA ≦ D/2–0.1
R Kmax.
Nmin.
1
2
3
NHN
Head thickness 4mm
Head thickness JIS
KSA
H T H T
D
L
P
W
Tip process
Lapping on the tip face X Not available for L–N ≦ 31 Total length tolerance alteration L + 0.02 0 c + 0.01 0 E Available when L ≦ 200
1.5 50.00–250.00 0.60– 1.30
TMC
3 4 5 6
3 4 5 6 7
1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 5.9 6.4 6.9 7.9 9.9
Caulking type
23
L
WSA
0.80– 1.80 0.80– 2.30 0.80– 2.80 1.00– 3.30 1.00– 3.80 1.20– 4.30
2
2.5
4
26
Rectangular shank
50.00–300.00
3
0.30–
LKC
27
L
0.05 0.1 0.15 0.2
3.5
D shaped
7
ERVJWR (Top surface 2 places R)
ERVWR (Top surface 2 places R)
4 50.00–300.00 (50.00–350.00) 4.5
Tapping D8 c M4 D10 c M5 D12/15 c M6 E Only available combination is with CSW/CSF/ TMC X Not available for ERVWR/ERVFR E Available when D ≧ 8
29
8
MC
Blade edge shape
8
4
1.50– 4.80 0.40–
5
MC
20 ≦ (L – N) ≦ 250
ERVJFR (4 places R)
31
9
ERVFR (4 places R)
5.5
1.80– 5.30 2.00– 5.80 2.00– 6.30 2.30– 6.80 2.30– 7.80 3.00– 9.80
6
M × 1
9
6
10
33
0.3 R ≦ W –
6.5
2 –0.05
0.50–
50.00–300.00 (50.00–350.00)
10
11
R 2 － CSW (C recess processing at 2 points on top)
CSW, CSF: Range of designation W CSW, CSF 1.0 ≦ W < 1.5 0.3
7 8
C chamfering processing at 2 points on top (except tip) for relief is performed. Designation method CSW1 – E25
11 15
13 15 17 20
40
10 12 15
CSW
8
3.50–11.80 0.80– 3.50–14.80 1.50–
11.9 14.9
0.5 1 1.5
–
– –
W ≧ 1.5
＋ 5 0
P
(C processing range)
E
N
E Designate P/W dimensions within the Kmax. K = P 2 + W 2 (K is dimension before R–chamfering)
E P ≧ W
E P ≧ 1.5 E CSW, CSF<W/2 E = 1mm increments E 5 ≦ E ≦ (L–N)–20 E R process range D P.168 E RC processing is prioritized when combining with RC.
E Select the R dimension within the range of R ≦ W –
2 –0.05.
E L dimension in ( ) is only for ERVJWR/ERVJFR.
(C recess at 4 points)
Precision Standard
C chamfering processing at 4 points (except tip) for
PartNumber– L – P – W – R – N ERVFR 4 –200.00–P2.00 – W0.80– R0.1 – N150
4 － CSF
R
Order
Pmin. Pmax.
relief is performed. Designation method CSF0.5 – E30
CSF
Squareness of the tip corner
W plane as the base (Pmax. – Pmin.) ≦ 0.01
Quotation
＋ 5 0
P
Delivery
(C processing range)
E
N
Rmax. ≦ 0.03 (deburring R) E Corner R value outside R processing range The tip corners have been slightly trimmed to measure the P/W dimensions. (Details D P.166 )
Rmax.
Corner R value of the tip corner
Designate the length of R processed part 5 ≦ RC ≦ (L–N)–30 and RC ≦ 40 RC = 1mm increments Designation method RC25 E Adds RC recess processing at all places R processed.
RC
P
N
RC
② In case of wire through hole Cavity core
① In case of divisions
Select the R size according to the corner R of the wire cut caused by cavity core processing, etc.
Example
Cavity core
R-chamfered E pin
R-chamfered E pin
Cavity core
187
188
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