All Product Types > ENGINEERED BEARINGS > Cylindrical Roller Bearings > Cylindrical Roller Radial Bearings - Two-Row > Part Number NNU4956MAW33  

Part Number NNU4956MAW33, Cylindrical Roller Radial Bearings - Two-Row

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  • 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.




Specifications  · Bearing Dimensions  · Mounting Data  · Lubrication Data

Specifications

Bore d
280 mm

Static Load Rating Co
1834000 N
412000 lbf

Dynamic Load Rating C11
880000 N
198000 lbf

Geometry Factor Cg2
0.1900

Thermal Speed Ratings - Oil
1000 rpm

Thermal Speed Ratings - Grease
880 rpm
1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
2 Cg factor for bearing without inner ring.


Bearing Dimensions

O.D. D
380 mm
14.9606 in

Width B
100 mm
3.937 in

DUR/DOR F/E
312 mm
12.2835 in


Mounting Data

Chamfer rsmin
2.1 mm
0.08 in

Chamfer r1smin1
2.1 mm
0.080 in

Backing Shaft Diameter ds
304.5 mm
11.9900 in

Backing Housing Diameter Ds
354 mm
13.9400 in
1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.


Lubrication Data

Lubrication Groove g
16.0 mm
0.63 in

Lubrication Hole Diameter h
7.5 mm
0.30 in

Number of Lubrication Holes
6

Dimension S1
4.80 mm
0.190 in
1 Permissible axial displacement from normal position of one bearing ring in relation to the other.


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·  timken-CRB-NN-Brass-Cage-Large-left-angle-view

·  timken-CRB-NN-Brass-Cage-Large-cutaway-view

·  timken-CRB-NN-Brass-Cage-Large-top-angle-view



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Catalog and Technical Information - Cylindrical Roller Bearings