High Speed Steel SKH51
P/W 0
RECTANGULAR EJECTOR PINS –FREE DESIGNATION TYPE–
With R
–0.01
Free designation
Part Number – L – P – W – R – N – (AKC/AWC … etc.) ERFR 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)
Part Number
0 °
T P/W Tolerance
0 °
Head Thickness
Top surface 2 places R 4 places R ERWR ERFR
AWC
270 °
90 °
P/W 0
–0.01
4mm (T4)
0 － 0.02 TC
TC
ERJWR ERWR
ERJFR ERFR
0 –0.01
180 °
P/W 0
ERJWR ERJFR
4/6/8mm (JIS)
T
0 °
–0.02
0 °
(Top surface 2 places R)
(R in 4 places)
20
ARC
P/W 0
270 °
90 °
R ≦ 0.5
–0.005
0 °
(R machining range)
0 °
（ D ≦ 2 R ≦ 0.3 ）
4 － ± 0.01 R
Step R
180 °
R ± 0.01
R ± 0.01
NC
P/W 0
270 °
90 °
–0.003
0 °
0 °
180 °
ADC
Standard size
270 °
90 °
0 － 0.01
－ 0.01 0
0 ）
0 －
（ L ＞ 300 T
－ 0.05
P
P
180 °
T
0.02
Total Length Designation Free designation
＋ 5 0
0 °
0 °
（ L － N ）
0 °
0 － 5
P ≧ W
2 2 W ＋ K P ＝ (Dimension before R-machining)
N
Two flats cutting (angled) KGA = 1° increments E 0 < KGA < 360
＋ 0.02
（ L ＞ 200 L 0 ） ＋ 0.05
NCW
KGA
270 °
90 °
L
90°
0
M Material SKH51 H Hardness 58–60HRC Range of guaranteed retention diameter (D) precision/base material hardness/Step R (Details D P.165 )
270 °
180 °
180 °
N dimension short
90 °
E R ± 0.01 is the target value for machining. Adjustment with the mounting hole side is required.
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
Head thickness 4mm
Head thickness JIS
Angular pin
D/2
5
Part Number
0.01mm increments
270 °
N 1mm increments
Rectangular R dimension
R Kmax.
Nmin.
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
1
2
3
Head thickness 4mm
Head thickness JIS
NHN
KSA
Tip process
H T H T
D
L
P
W
1.5 50.00–250.00 0.60– 1.30
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 8.4 9.9
3 4 5 6 7
3 4 5 6 7 8
Caulking type
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
TMC
23 26 27
0.80– 1.80 0.80– 2.30 0.80– 2.80 1.00– 3.30 1.00– 3.80 1.20– 4.30 1.80– 5.30 2.00– 5.80 2.00– 6.30 2.30– 6.80 2.30– 7.80 2.30– 8.30 3.00– 9.80 3.00–10.30
2
L
WSA
50.00–300.00
2.5
4
Rectangular shank
3
0.30–
LKC
3.5
0.1 0.15
L
50.00–350.00
D shaped
4
29
ERWR (Top surface 2 places R)
ERJWR (Top surface 2 places R)
Tapping D8/8.5 c M4 D10/10.5 c M5 D12/15 c M6 X Combination with other than CSW/CSF/TMC not available X Not available for ERWR/ERFR E Available when D ≧ 8
4.5
Blade edge shape
8
MC
1.50– 4.80 0.40–
5
0.2 0.3
31 33
9
20 ≦ (L – N) (L – N) ≦ 250
5.5
MC
4
6
9
6
10 11 13 14 15 17
ERFR (4 places R)
ERJFR (4 places R)
M × 1
6.5
10 11 14 15 17
7 8
R ≦ W –
0.50–
2 –0.05
(C recess processing at 2 points on top)
50.00–350.00
CSW, CSF: Range of designation W CSW, CSF 1.0 ≦ W < 1.5 0.3
C chamfering processing at 2 points on top (except tip) for relief is performed. Designation method CSW1 – E25
8.5 10
2 － CSW R
40
8
CSW
10.5
10.4 11.9
0.5 1 1.5
12 15
3.50–11.80 0.80– 3.50–14.80 1.50–
W ≧ 1.5
– – 20 14.9 E Designate P/W dimensions within the Kmax. K = P 2 + W 2 (K is dimension before R–chamfering) E P ≧ W E Select the R dimension within the range of R ≦ W – 2 –0.05. –
＋ 5 0
P
(C processing range)
E
N
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.
(C recess at 4 points)
Precision Standard
PartNumber– L – P – W – R – N ERFR 4 –200.00–P2.00 – W0.80– R0.1 – N150
C chamfering processing at 4 points (except tip) for
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.) ≦ 0.02
Quotation
Delivery
＋ 5 0
P
(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
① In case of divisions
Select the R size according to the corner R of the wire cut caused by cavity core processing, etc.
② In case of wire through hole Cavity core
Example
Cavity core
R-chamfered E pin
R-chamfered E pin
Cavity core
185
186
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