STEPPED EJECTOR PINS
Stepped Ejector Pins Shape
Stepped Ejector Pins with Tip Process
Stepped Ejector Pins with Engraving Shape
P/L/N dimension designation type
L dimension designation type
P/L/N dimension designation type
P/N dimension designation, L dimension selection type
Standard type
P/L/N dimension designation type
M
T
T
T
T
T
T
Category
N
N
N
N
N
N
L
L
L
L
L
L
Category
Tip Diameter (P) Tolerance
Tip Diameter (P) Tolerance
Head Thickness (T)
Head Thickness (T)
Material
Part Number Page
Material
Part Number
Page
Tip Diameter (P) Tolerance
Head Thickness (T)
Material
Part Number Page Part Number Page Part Number Page Part Number Page
0 –0.005
0 –0.005
EHSF □ M/EHSF □ MR (Sequential No.) P.139 EHSFE □ M/EHSFE □ MR (Sequential No.) P.139 EHSJF □ M/EHSJF □ MR (Sequential No.) P.139 EHSJFE □ M/EHSJFE □ MR (Sequential No.) P.139 EJSF □ M/EJSF □ MR (Sequential No.) P.141
EHSF □ A EHSFE □ A EHSJF □ A EHSJFE □ A
P.137
0 –0.002 0 –0.005
4mm (T4)
EVSL EHSL
EVSG EHSG
EVSF EHSF
4mm (T4)
–
P.103 ＊＊ ＊＊
P.103 ＊＊ ＊＊
P.103
–0.01 –0.02
–0.01 –0.02
P.137
SKH51
＊＊ ＊＊
EHS
SKH51
P.101
4mm (T4)
0 –0.005
0 –0.005
P.137
–0.01 –0.02
6/8mm (JIS)
EHSE
EHSEL
EHSEG
EHSFE
P.101
6/8mm (JIS)
–0.01 –0.02 –0.01 –0.02
–0.01 –0.02
P.137
SKH51
4mm (T4) Small diameter
0 –0.005 0 –0.005
EHYF
SKD61 + Nitriding
–
–
–
P.101
6/8mm (JIS)
＊＊ ＊＊
＊＊ ＊＊
＊＊ ＊＊
EHSJ
EHSJL
EHSJG EHSJEG
EHSJF
P.101
Stepped Ejector Pins with Gas Vent –High Speed Steel–
6/8mm (JIS)
–0.01 –0.02
EHSJE
EHSJEL
EHSJFE C–EHSF C–EHSFE
P.101
P dimension selection type
P dimension designation type
Shape
0 –0.005
– –
– –
– –
P.105
4mm (T4)
Flange cut
Flange cut
–0.01 –0.02
P.105
T
T
SKH51 + Hard chromate plating
N
N
4mm (T4) Small diameter
L
L
0 –0.005 0 –0.005
C–EHYF
–
–
–
P.105
Headband
Headband
Category
C–EHSJF C–EHSJFE
– –
– –
– –
P.105
6/8mm (JIS)
–0.01 –0.02
Shaft diameter (P) Tolerance
P.105 P.107 P.107 P.109 P.111 P.111 P.113 P.113
Head Thickness (T)
Type
Material
Part Number
Page
Part Number
Page
＊＊ ＊＊
＊＊ ＊＊
＊＊ ＊＊
ENS EJS
ENSL EJSL
ENSG EJSG
ENSF EJSF DESF
4mm (T4)
Reference tolerance
SKD61 + Nitriding
6/8mm (JIS) 10mm (T10)
–0.01 –0.02
0 –0.005
–
–
–
＊＊
＊＊
GW(S)–EHSL
GW(S)–EHSF
0 –0.005
＊＊ ＊＊
＊＊ ＊＊
＊＊ ＊＊ P.113
EDS
EDSL
EDSG
EDSFS EDSF EASF EAJSF EWSF EWSJF
4mm (T4)
Single face
SKD61
4mm (T4)
–0.01 –0.02
–0.01 –0.02
EDSE
EDSEL
EDSEG
＊＊
＊＊
GW(S)–EHSEL
GW(S)–EHSFE
P
Reference tolerance
EASG
– – – –
– – – –
4mm (T4)
SKD61 Prehardened
0 –0.005
–0.01 –0.02
＊＊
＊＊
GW(S)–EHSJL
GW(S)–EHSJF
– – –
6/8mm (JIS)
0 –0.005 0 –0.005
6/8mm (JIS)
P.115
4mm (T4)
SKH51
Four faces
SUS440C
–0.01 –0.02
＊＊
＊＊
GW(S)–EHSJEL
GW(S)–EHSJFE
P.115
6mm (JIS)
P
E ＊＊ Web–only products
0 –0.005
＊＊ ＊＊ ＊＊ ＊＊
＊＊ ＊＊ ＊＊
GVB–EHSL GVB–EHSEL GVB–EHSJL GVB–EHSJEL
GVB–EHSF GVB–EHSFE GVB–EHSJF GVB–EHSJFE
4mm (T4)
–0.01 –0.02
Red Letters: New products
Stepped Ejector Pins with Gas Vent –Die Steel–
P dimension designation type
P dimension selection type
0 –0.005
Shape
6/8mm (JIS)
Flange cut
Flange cut
P
–0.01 –0.02
＊＊ E ＊＊ Web–only products
T
T
N
N
L
L
Category
Two–Stepped Ejector Pins
Headband
Headband
Tip Diameter (P) Tolerance
Head Thick- ness (T)
P/L/N Dimension Designation type
Shaft diameter (P) Tolerance Reference tolerance
Material
Part Number
Page
Head Thickness (T)
Part Number
Page Part Number
Page
Type
Material
T
0 –0.005
N
EHWSB
＊＊ E ＊＊ Web–only products
SKH51
F
4mm (T4)
L
GW(S)–ENSF GW(S)–EJSF GW(S)–DESF
P.117 P.117 P.119
–
4mm (T4)
Single face
SKD61 + Nitriding
■ Material characteristics of ejector pins
GW(S)–EJSL
P.117
6/8mm (JIS)
–0.01 –0.02
Die Steel SKD61 + Nitriding 900HV— Base Material: 40—45 Surface:
Prehardened Die Steel SKD61
–
10mm (T10)
High Speed Steel SKH51
Die Steel SKD61
Stainless Steel SUS440C
M Material
0 –0.005
GW(S)–EDSFS
P.121
–
P
40—45
56—60
H Hardness
HRC
58—60
50—55
SKD61
4mm (T4)
Four faces
–0.01 –0.02
GW(S)–EDSF
P.121
–
Wear resistance
5 4 3 3
4 4 5 3
4 3 4 3
3 3 4 3
4 4 3 5
Specularity Toughness
Reference tolerance
GW(S)–EASF
P.123
–
4mm (T4)
SKD61 Prehardened
Corrosion resistance
–0.01 –0.02
GW(S)–EAJSF
P.123
–
6/8mm (JIS)
P
Density
[g/cm 3 ]
8.2
7.75
7.75
7.75
7.78
Modulus of longitudinal elasticity [kgf/mm 2 ] Coefficient of thermal expansion [ × 10 –6 /K( ℃ )]
22300
21000
21000
21000
20400
GV–ENSF GV–EJSF GV–DESF GV–EDSFS GV–EDSF GV–EASF GV–EAJSF
P.125 P.125 P.127 P.129
– – –
4mm (T4)
Reference tolerance
SKD61 + Nitriding
10.1
10.8
10.8
10.8
10.2
6/8mm (JIS)
[cal/cm·sec· ℃ ]
Thermal conductivity
–0.01 –0.02
0.051
0.061
0.061
0.061
0.058
10mm (T10)
Tensile strength
[kgf/mm 2 ]
235
135
135
135
200
0 –0.005
–
SKD61
4mm (T4)
Charpy impact values
[kgf·m/cm 2 ]
2
6
4
4
1.5
–0.01 –0.02
P.129
–
P
Conversion formula 1kgf/mm 2 = 9.81N/mm 2
1
3
5
E Data may vary depending on heat treatment and usage conditions. Use these data as reference.
Machining characteristics
Reference tolerance
P.131
–
4mm (T4)
SKD61 Prehardened
95
96
1cal/cm · sec · ℃= 418.4W/m · K 1kgf · m/cm 2 = 9.81J/cm 2
–0.01 –0.02
(Poor)
(Good)
(Excellent)
P.131
–
6/8mm (JIS)
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