STEPPED CENTER PINS

									Center pin shaft dia- meter tole- rance	Appli- cable ejector sleeve hole(V) tole- rance
			Tip(A, V) tolerance ±0.02 (Reference value)		Tip(A, V) tolerance ±0.01 (Reference value)		Tip(A, V) tolerance ±0.005 (Reference value)
Material	Head Thick- ness (T)	Shaft diameter tolerance	Shaft diameter (D) selection type	Shaft diameter (P) 0.01mm increments	Shaft diameter (D) selection type	Shaft diameter (P) 0.01mm increments	Shaft diameter (D) selection type	Shaft diameter (P) 0.01mm increments
	4mm (T4)	0 -0.005	-	-	CPH-5□	CPHG-5□	CPV-5□	CPVG-5□	0 -0.005	+0.005 0
		-0.01 -0.02	CPXE-5□	CPXGE-5□	CPHE-5□	CPHGE-5□	CPVE-5□	CPVGE-5□	-0.01 -0.02	+0.01 0 or H7
	4mm 6mm 8mm (JIS)	0 -0.005	-	-	CPHJ-5□	CPHJG-5□	CPVJ-5□	CPVJG-5□	0 -0.005	+0.005 0
		-0.01 -0.02	CPXJE-5□	CPXJGE-5□	CPHJE-5□	CPHJGE-5□	CPVJE-5□	CPVJGE-5□	-0.01 -0.02	+0.01 0 or H7
	4mm (T4)	*Reference tolerance -0.01 -0.02	CPN-5□	** CPNG-5□	CPNK-5□	** CPNKG-5□	-	-	-0.01 -0.02	+0.01 0 or H7
	4mm 6mm 8mm (JIS)		CPJ-5□	** CPJG-5□	CPJK-5□	** CPJKG-5□	-	-
	4mm (T4)	*Reference tolerance -0.01 -0.02	RDCPN-5□	-	-	-	-	-	-0.01 -0.02	+0.01 0 or H7
	6mm 8mm (JIS)		RDCPJ-5□	-	-	-	-	-
	4mm (T4)	0 -0.005	-	-	CPP-5□	CPPG-5□	-	-	0 -0.005	+0.005 0
		-0.01 -0.02	CPD-5□	CPDG-5□	CPDK-5□	CPDKG-5□	-	-	-0.01 -0.02	+0.01 0 or H7

The tolerance range varies depending on the selected shape. For details, refer to the catalog page of each product.
*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.
**Forthe shaft diameter is designated by 0.1 mm increments.

						Tip dia- meter (P) tole- rance	Appli- cable ejector sleeve hole(V) tole- rance
Material	Head Thick- ness (T)	Tip diameter (P) tolerance	Tip (A, V) tolerance ±0.02 (Reference value)	Tip (A, V) tolerance ±0.01 (Reference value)	Tip (A, V) tolerance ±0.005 (Reference value)
	4mm (T4)	0 -0.005	-	CPHB-5□	CPVB-5□	0 -0.005	+0.005 0
	4mm 6mm 8mm (JIS)		-	CPHBJ-5□	CPVBJ-5□	0 -0.005	+0.005 0
	4mm (T4)	*Reference tolerance -0.01 -0.02	CPNB-5□	-	-	-0.01 -0.02	+0.01 0 or H7
	4mm 6mm 8mm (JIS)		CPJB-5□	-	-

The tolerance range varies depending on the selected shape. For details, refer to the catalog page of each product.
* 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.

	Two-step		Stepped Two-step					Two-step		Stepped Two-step
Material	SKH51 equivalent		SKH51 equivalent			Head		4mm		4mm
Part No.	C□H5□·C□HE5□		C□HB5□			Tip tolerance		±0.01		±0.01

Material		SKD61equivalent +Nitrided		Head		4mm(T4) 6·8mm(JIS)
Part No.		RDCPN-5□ RDCPJ-5□		Tip tolerance		±0.02

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

Machining characteristics

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

Use these data for reference only as they are dependent on specific heat treatment and usage conditions.