STRAIGHT EJECTOR PINS

Straight Ejector Pins

Category Type
Material Head
Thickness
(T)
Shaft
Diameter
(P)
Tolerance
Part Number Part Number Part Number Part Number
4mm
(T4)
0
-0.002
- EPV-L EPV-G EPVB
0
-0.005
EPH EPH-L EPH-G EPHB
-0.01
-0.02
EPHE-B EPHE-L EPHE-G EPHBE
4mm
(T4)Small Diameter
0
-0.005
- EPY-L EPY-G EPYB
6·8mm
(JIS)
0
-0.005
EPHJ EPHJ-L EPHJ-G EPHJB
-0.01
-0.02
EPHJE EPHJE-L EPHJE-G EPHJBE
4mm
(T4)
0
-0.005
- - - C-EPHB
-0.01
-0.02
- - - C-EPHBE
4mm
(T4)Small Diameter
0
-0.005
- - - C-EPYB
6·8mm
(JIS)
0
-0.005
- - - C-EPHJB
-0.01
-0.02
- - - C-EPHJBE
4mm
(T4)
0
-0.005
EPDS EPDS-L EPDGS EPDBS
-0.01
-0.02
EPD EPD-L EPDG EPDB
4mm
(T4)
*Representative
tolerance
-0.01
-0.02
EPN EPN-L EPNG EPNB
6·8mm
(JIS)
EPJ EPJ-L EPJG EPJB
4·6·8mm
(JIS)
*Representative
tolerance
-0.01
-0.02
EPAJ EPAJ-L EPAJG EPAJB
4mm
(T4)
0
-0.005
EPW EPW-L EPWG EPWB
6mm
(JIS)
0
-0.005
EPWJ EPWJ-L EPWJG EPWJB
*The tolerance values for shaft diameter are representative ones. The tolerance range varies depending on the shaft size and/or length. For details, refer to the Catalog page of each product.

Ejector pins with cutting facets / Ejector pins with spiral vent / Ejector pins with gas vent

Category Type
Type Material Head
Thickness(T)
Shaft Diameter
(P)Tolerance
Part Number Part Number
Cutting
facets
SKH51
equivalent
4mm
(T4)
0
-0.005
GW□-EPH-L GW□-EPHB
-0.01
-0.02
GW□-EPHE-L GW□-EPHBE
6·8mm
(JIS)
0
-0.005
GW□-EPHJ-L GW□-EPHJB
-0.01
-0.02
GW□-EPHJE-L GW□-EPHJBE
Gas Release
Grove
(Tip diameter
designation)
4mm
(T4)
0
-0.005
GVB-EPH-L GVB-EPHB
-0.01
-0.02
GVB-EPHE-L GVB-EPHBE
6·8mm
(JIS)
0
-0.005
GVB-EPHJ-L GVB-EPHJB
-0.01
-0.02
GVB-EPHJE-L GVB-EPHJBE
Gas
Release
Groove
4mm
(T4)
0
-0.005
GV-EPH-L GV-EPHB-L
-0.01
-0.02
GV-EPHE-L GV-EPHBE-L
6·8mm
(JIS)
0
-0.005
GV-EPHJ-L GV-EPHJB-L
-0.01
-0.02
GV-EPHJE-L GV-EPHJBE-L
■Material characteristics of Straight Ejector Pins:Click here for reference.

Straight Ejector Pins with tip process

Category
Material Head
Thickness(T)
Shaft Diameter
(P)Tolerance
Part Number Part Number
SKH51 equivalent 4mm
(T4)
0
-0.002
- -
0
-0.005
EPH□A EPHB□A
-0.01
-0.02
EPHE□A EPHBE□A
4mm
(T4)
Small Diameter
0
-0.005
- -
6·8mm
(JIS)
0
-0.005
EPHJ□A EPHJB□A
-0.01
-0.02
EPHJE□A EPHJBE□A
SKD61 equivalent 4mm
(T4)
0
-0.005
EPDS□A EPDBS□A
-0.01
-0.02
EPD□A EPDB□A
SKD61 equivalent
+
Nitrided
4mm
(T4)
*Representative
tolerance
-0.01
-0.02
EPN□A EPNB□A
6·8mm
(JIS)
EPJ□A EPJB□A

Straight Ejector Pins with engraving

Category
Material Head
Thickness(T)
Shaft Diameter
(P)Tolerance
Part Number Part Number
SKH51 equivalent 4mm
(T4)
0
-0.002
EPV□M·EPV□MR
(Sequential number)
EPVB□M·EPVB□MR
(Sequential number)
0
-0.005
EPH□M·EPH□MR
(Sequential number)
·EPH□T
EPHB□M·EPHB□MR
(Sequential number)
·EPHB□T
-0.01
-0.02
EPHE□M·EPHE□MR
(Sequential number)
·EPHE□T
EPHBE□M·EPHBE□MR
(Sequential number)
·EPHBE□T
4mm
(T4)
Small Diameter
0
-0.005
- -
6·8mm
(JIS)
0
-0.005
EPHJ□M EPHJB□M
-0.01
-0.02
EPHJE□M EPHJBE□M
SKD61 equivalent
+
Nitrided
4mm
(T4)
*Representative
tolerance
-0.01
-0.02
EPN□M·EPN□MR
(Sequential number)
-
6·8mm
(JIS)
EPJ□M·EPJ□MR
(Sequential number)
-

Z Groove Processed Straight Ejector Pins



Category Type
Material Head
Thickness(T)
Shaft Diameter
(P)Tolerance
Part Number
SKH51 equivalent 4mm(T4) 0
-0.005
Z-EPH-L
-0.01
-0.02
Z-EPHE-L

Straight Ejector Pins -Package Products-

Category Type
Material Head
Thickness(T)
Shaft Diameter
(P)Tolerance
Part Number Part Number
SKH51 equivalent 4mm
(T4)
0
-0.005
50PACK-EPH 100PACK-EPH
-0.01
-0.02
50PACK-EPHE 100PACK-EPHE
SKD61 equivalent
+
Nitrided
4mm
(T4)
-0.01
-0.02
50PACK-EPN 100PACK-EPN
6·8mm
(JIS)
50PACK-EPJ 100PACK-EPJ
SKH61 equivalent 4mm
(T4)
-0.01
-0.02
50PACK-EPD 100PACK-EPD

Pins For Ejector Block


Part No. EBPJ Close-up of tip section

Air-Jet Valves


  Air-Jet Valves Spacers
Part No. AJVE AJV AJVS

Spring Pins & Dowel Pins

Part No. WSP MS
(FA)

Characteristics of materials for straight 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 material(Core):
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 may vary depending on heat processing and working conditions; use the data as reference.

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