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Part Number 300RU30R4, Cylindrical Roller Radial Bearings - Single Row Standard

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Specifications  · Dimensions  · Basic Load Ratings  · Factors  · Abutment and Fillet Dimensions

Specifications

Design Units
Metric

d - Bore
300 mm

Type
NU


Dimensions

D - Outer Diameter
460 mm
18.1102 in

C - Inner Ring Width
118 mm
4.6457 in

B - Outer Ring Width
118 mm
4.6457 in


Basic Load Ratings

C0 - Static Radial Rating
3640000 N
818000 lbf

C - Dynamic Radial Rating1
1990000 N
447000 lbf
1 Based on 1 x 106 L10 life for the ISO life calculation method.


Factors

Reference Thermal Speed Rating (Grease)
600 rpm

Reference Thermal Speed Rating (Oil)1
660 rpm

Cg - Geometry Factor2
0.2049
1 See thermal speed ratings in the engineering section.
2 Geometry constant for Lubrication Life Adjustment Factor a3l.


Abutment and Fillet Dimensions

da - Inner Ring Backing Diameter
330 mm
13.0000 in

Da - Outer Ring Backing Diameter
429 mm
16.9000 in



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