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.

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

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

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

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		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.