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STEPPED EJECTOR PINS

Stepped ejector pins

Category Type
Material Head
Thickness
(T)
Tip diameter
(P) tolerance
Part Number Part Number Part Number Part Number
4mm
(T4)
0
-0.002
- EVSL EVSG EVSF
0
-0.005
EHS EHSL EHSG EHSF
-0.01
-0.02
EHSE EHSEL EHSEG EHSFE
4mm
(T4)Small diameter
0
-0.005
- - - EHYF
6·8mm
(JIS)
0
-0.005
EHSJ EHSJL EHSJG EHSJF
-0.01
-0.02
EHSJE EHSJEL EHSJEG EHSJFE
4mm
(T4)
0
-0.005
- - - C-EHSF
-0.01
-0.02
- - - C-EHSFE
4mm
(T4)Small diameter
0
-0.005
- - - C-EHYF
6·8mm
(JIS)
0
-0.005
- - - C-EHSJF
-0.01
-0.02
- - - C-EHSJFE
4mm
(T4)
0
-0.005
EDS EDSL EDSG EDSFS
-0.01
-0.02
EDSE EDSEL EDSEG EDSF
4mm
(T4)
6·8mm
(JIS)
*Representative
tolerance
-0.01
-0.02
ENS ENSL ENSG ENSF
EJS EJSL EJSG EJSF
4mm
(T4)
6·8mm
(JIS)
*Representative
tolerance
-0.01
-0.02
- - EASG EASF
- - - EAJSF
4mm
(T4)
0
-0.005
- - - EWSF
6mm
(JIS)
0
-0.005
- - - EWSJF
*The tolerance values of tip diameter are representative ones. The tolerance range varies depending on the tip diameter. For details, refer to the catalog page of each product.

STEPPED EJECTOR PINS WITH GAS VENT

Category Type


Tip Material Head
Thickness(T)
Tip diameter
(P)tolerance
Part Number Part Number
Single
flat
cutting
SKH51 equivalent 4mm
(T4)
0
-0.005
GW-EHSL GW-EHSF
-0.01
-0.02
GW-EHSEL GW-EHSFE
6·8mm
(JIS)
0
-0.005
GW-EHSJL GW-EHSJF
-0.01
-0.02
GW-EHSJEL GW-EHSJFE
Four
flats
cutting
SKH51 equivalent 4mm
(T4)
0
-0.005
GWS-EHSL GWS-EHSF
-0.01
-0.02
GWS-EHSEL GWS-EHSFE
6·8mm
(JIS)
0
-0.005
GWS-EHSJL GWS-EHSJF
-0.01
-0.02
GWS-EHSJEL GWS-EHSJFE
With
gas
vent
SKH51 equivalent 4mm
(T4)
0
-0.005
GVB-EHSL GVB-EHSF
-0.01
-0.02
GVB-EHSEL GVB-EHSFE
6·8mm
(JIS)
0
-0.005
GVB-EHSJL GVB-EHSJF
-0.01
-0.02
GVB-EHSJEL GVB-EHSJFE

TWO-STEPPED EJECTOR PINS

Category Type
Material Head
Thickness(T)
Tip diameter
(P)tolerance
Part Number
SKH51 equivalent 4mm
(T4)
0
-0.005
EHWSB

STEPPED EJECTOR PINS WITH TIP PROCESS

Category Type
Material Head
Thickness(T)
Tip diameter
(P)tolerance
Part Number
SKH51 equivalent 4mm(T4) 0
-0.005
EHSF□A
-0.01
-0.02
EHSFE□A
6·8mm(JIS) 0
-0.005
EHSJF□A
-0.01
-0.02
EHSJFE□A

STEPPED EJECTOR PINS WITH ENGRAVING

Category Type
Material Head
Thickness(T)
Tip diameter
(P)tolerance
Part Number
SKH51 equivalent 4mm
(T4)
0
-0.005
EHSF□M·EHSF□MR(Sequential No.)
-0.01
-0.02
EHSFE□M·EHSFE□MR(Sequential No.)
6·8mm
(JIS)
0
-0.005
EHSJF□M·EHSJF□MR(Sequential No.)
-0.01
-0.02
EHSJFE□M·EHSJFE□MR(Sequential No.)
SKD61 equivalent
+
Nitriding
6·8mm
(JIS)
-0.01
-0.02
EJSF□M·EJSF□MR(Sequential No.)

Material characteristics of stepped ejector pins

Material High Speed Steel
SKH51
Dies Steel
SKD61
Dies Steel
SKD61
+
Nitrided
Prehardened
Dies Steel
SKD61
Stainless Steel
SUS440C
Hardness    HRC 58~60 50~55 Surface
:900HV~
Base
Materials
:40~45
40~45 56~60
Machining
characteristics
Wear resistance 5 4 4 3 4
Ability to be mirror-finished 4 4 3 3 4
Toughness 3 5 4 4 3
Corrosion resistance 3 3 3 3 5
Physical
characteristics
Density [g/cm3] 8.2 7.75 7.75 7.75 7.78
Modulus of longitudinal elasticity
[kgf/mm2]
22300 21000 21000 21000 20400
Coefficient of thermal expansion
[×10-6/°C]
10.1 10.8 10.8 10.8 10.2
Thermal conductivity
[cal/cm·sec·°C]
0.051 0.061 0.061 0.061 0.058
Mechanical
characteristics
Tensile strength [kgf/mm2] 235 135 135 135 200
Charpy impact values [kgf·m/cm2] 2 6 4 4 1.5
Machining characteristics

Conversion expression
1kgf/mm2=9.81N/mm2
1cal/cm·sec·°C=418.6W/M.K
1kgf·m/cm2=9.81J/cm2

Data(figures shown)may vary depending on heat treatment and/or working conditions: Use these data as reference.

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