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Select all	Attribute	Value
	Brand	SKF
	Product Type	Roller Bearing
	Inside Diameter	40mm
	Race Width	23mm
	Bore Type	Cylindrical
	Cage Material	Sheet Metal
	Static Load Rating	75kN
	Internal Clearance	CN
	Outside Diameter	80mm
	End Type	Shielded
	Standards/Approvals	No
	Limiting Speed	11000rpm
	Dynamic Load Rating	81.5kN
	Number of Rows	1

	Select all
	Brand SKF
	Product Type Roller Bearing
	Inside Diameter 40mm
	Race Width 23mm
	Bore Type Cylindrical
	Cage Material Sheet Metal
	Static Load Rating 75kN
	Internal Clearance CN
	Outside Diameter 80mm
	End Type Shielded
	Standards/Approvals No
	Limiting Speed 11000rpm
	Dynamic Load Rating 81.5kN
	Number of Rows 1

Datasheet - NJ 2208 ECJ

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COO (Country of Origin):: DE

SKF Roller Bearing, 40mm Inside Diameter, 80mm Outside Diameter - NJ 2208 ECJ

This roller bearing is a single-row, shielded bearing designed to support radial loads in rotating machinery. It operates at high speeds and is suitable for installations requiring a cylindrical bore and a Compact race width, offering a balance of static and dynamic load capability for engineering applications.

Features and Benefits:

• Sheet-metal cage reduces mass and aids heat dissipation
• 81.5 kN dynamic rating supports sustained operational loads
• 75 kN static rating resists high stop-and-hold forces
• CN internal clearance allows controlled axial positioning
• Shielded end type limits contamination ingress at speed

Applications

• Suitable for high-speed spindles running at elevated r/min
• Ideal for shafts with a cylindrical-bore connection
• Used for rotating equipment needing Compact race width
• Can be used for radial-load carrying in motor assemblies
• Suitable for machinery requiring contamination-reduced bearings

What bore type must the shaft provide for correct fitment?

A cylindrical bore is required to ensure the bearing locates correctly on the shaft.

How does the internal clearance classification affect assembly?

The CN clearance gives a nominal internal gap that assists controlled thermal expansion and axial displacement during operation.

What limitation does the bearing have regarding rotational speed?

The bearing is rated for operation up to 11,000 r/min, which defines the maximum permissible rotational speed.

How does the bearing cope with intermittent shock loads on standstill?

The 75 kN static load capacity specifies the maximum stationary load the bearing can withstand without permanent deformation.

What dimensional envelope should be considered for housing design?

The external diameter is 80 mm and the race width is 23 mm, which determine housing bore and axial space requirements.

SKF NJ 2208 ECJ 40 mm ID Roller Bearing, 80 mm OD