All Product Types > ENGINEERED BEARINGS > Cylindrical Roller Bearings > Cylindrical Roller Radial Bearings - Two-Row > Part Number NNU4944MAW33  

Part Number NNU4944MAW33, 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
220 mm

Static Load Rating Co
1150000 N
258000 lbf

Dynamic Load Rating C11
577000 N
130000 lbf

Geometry Factor Cg2
0.157

Thermal Speed Ratings - Oil
1400 rpm

Thermal Speed Ratings - Grease
1200 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
300 mm
11.811 in

Width B
80 mm
3.1496 in

DUR/DOR F/E
245 mm
9.6457 in


Mounting Data

Chamfer rsmin
2.1 mm
0.08 in

Chamfer r1smin1
2.1 mm
0.080 in

Backing Shaft Diameter ds
240 mm
9.4500 in

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


Lubrication Data

Lubrication Groove g
12.3 mm
0.48 in

Lubrication Hole Diameter h
6.0 mm
0.24 in

Number of Lubrication Holes
6

Dimension S1
3.90 mm
0.150 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