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Part Number 280RU30R4, 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
280 mm

Type
NU


Dimensions

D - Outer Diameter
420 mm
16.5354 in

C - Inner Ring Width
106 mm
4.1732 in

B - Outer Ring Width
106 mm
4.1732 in


Basic Load Ratings

C0 - Static Radial Rating
3040000 N
683000 lbf

C - Dynamic Radial Rating1
1690000 N
380000 lbf
1 Based on 1 x 106 L10 life for the ISO life calculation method.


Factors

Reference Thermal Speed Rating (Grease)
670 rpm

Reference Thermal Speed Rating (Oil)1
740 rpm

Cg - Geometry Factor2
0.1916
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
303 mm
11.9000 in

Da - Outer Ring Backing Diameter
397 mm
15.6000 in



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