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NNU4976

Double-Row Cylindrical Roller Bearings

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Parts Number
NNU4976CC1P5 Double-Row Cylindrical Roller Bearings			Add to Compare You can use this service by registering as a member.

Product Information

Parts Number

NNU4976CC1P5

Boundary Dimensions

	NNU: Outer ring rib type		Bearing Type
d	380	mm	Bore diameter
D	520	mm	Outside diameter
B	140	mm	Width
r(min.)	4	mm	Chamfer Dimension

Basic Load Ratings

C_r	1880	kN	Basic Dynamic Load Rating
C_0r	4600	kN	Basic Static Load Rating

Speeds

Grease	1500	min^-1	Limiting Speed
Oil (Oil-air)	1800	min^-1	Limiting Speed

Dimensions

Ew	421	mm	Roller Circumscribed Circle Diameters
s	3.8	mm	Axial Displacement

Abutment and Fillet Dimensions

da(min.)	396	mm	Diameter of Shaft Abutment
d1a(min.)	408	mm	Diameter of Shaft Abutment
Da(max.)	504	mm	Diameter of Housing Abutment
ra(max.)	3	mm	Radius of Shaft or Housing Fillet

Additional information

CC1(max.)	75	μm	Clearance in Bearings with Cylindrical Bores
CC1(min.)	25	μm	Clearance in Bearings with Cylindrical Bores

Holes Dimensions

dh	8	mm	Hole Diameter
W	15	mm	Oil Groove Width
m	4		Number of Holes

Mass

88.8

kg

Mass(approx.)

CAD

Customer Questions

More Information

More Information
NSK Product Type2	SP_CRB_DR_NNU
NSK Product Type	Super Precision Bearing
Designations	NNU4976

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