• Additional radial load-carrying capability compared to single-row product.
  • Designed to ISO/DIN specified interchangeable dimensions.
  • Sold as complete assembly.

NNU-1
  • Outer rings with solid ribs.
  • Lubrication grooves and holes on outer rings.
  • One solid brass cage.

The radial internal clearance (RIC) for the bearing assembly must be included when ordering the complete assembly.
Unit of Measure

Key Dimensions

UPC

 N/A 0013992256850

Bore (d)

 N/A 280 mm

O.D. (D)

 N/A 460 mm18.1102 in

Width (B)

 N/A 180 mm7.0866 in
Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 2940000 N660000 lbf

Other Dimensions

Weight

 N/A 117.9 Kg262 lb

Shaft Backing Shoulder Dia.

 N/A 318.9 mm12.5600 in

Housing Backing Shoulder Dia.

 N/A 422 mm16.6100 in

Max Shaft Fillet Radius LF ID

 N/A 0.2 in5 mm

Max Shaft Fillet Radius RF ID

 N/A 0.200 in5 mm

Max Housing Fillet Radius LF OD

 N/A 0.2 in5 mm

Max Housing Fillet Radius RF OD

 N/A 0.2 in5 mm

DUR/DOR F/E

 N/A 326 mm12.8346 in

Ratings

Static Radial Load Rating (C0)

 N/A 4820000 N1084000 lbf

Thermal Reference Speed - Oil 

 N/A 990 rpm

Thermal Reference Speed - Grease 

 N/A 910 rpm

Factors

Geometry Factor (Cg) 2 N/A 0.2190
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Cg factor for bearing without inner ring.