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NNU4921MB

Double-Row Cylindrical Roller Bearings

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Parts Number
NNU4921MBCC1P4 Double-Row Cylindrical Roller Bearings			Add to Compare You can use this service by registering as a member.

Product Information

Parts Number

NNU4921MBCC1P4

Boundary Dimensions

	NNU: Outer ring rib type		Bearing Type
d	105	mm	Bore diameter
D	145	mm	Outside diameter
B	40	mm	Width
r(min.)	1.1	mm	Chamfer Dimension

Basic Load Ratings

C_r	185	kN	Basic Dynamic Load Rating
C_0r	315	kN	Basic Static Load Rating

Speeds

Grease	6000	min^-1	Limiting Speed
Oil (Oil-air)	7200	min^-1	Limiting Speed

Dimensions

Ew	117	mm	Roller Circumscribed Circle Diameters
s	1.2	mm	Axial Displacement

Abutment and Fillet Dimensions

da(min.)	111.5	mm	Diameter of Shaft Abutment
d1a(min.)	113	mm	Diameter of Shaft Abutment
Da(max.)	138.5	mm	Diameter of Housing Abutment
ra(max.)	1	mm	Radius of Shaft or Housing Fillet

Additional information

CC1(max.)	30	μm	Clearance in Bearings with Cylindrical Bores
CC1(min.)	10	μm	Clearance in Bearings with Cylindrical Bores
	5.6	g/brg	Recommended Grease Quantities

Holes Dimensions

dh	2.5	mm	Hole Diameter
W	5	mm	Oil Groove Width
m	4		Number of Holes

Mass

1.83

kg

Mass(approx.)

CAD

Customer Questions

More Information

More Information
NSK Product Type2	SP_CRB_DR_NNU
NSK Product Type	Super Precision Bearing
Designations	NNU4921MB

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