BEARINGS (UK) LTD.

Four Row Bearings  

Four row tapered roller bearingsare specially designed for rolling mill applications where their thin cross-section height and increased width provide higher capacity. The difference between a TQO bearing and a 2TDIW bearing design is relatively minor, as each uses two TDI cones.

The TQO design uses two TDI cones, one double cup in the middle, two single cups one on each end, two cup spacers, and a cone spacer.
The 2TDIW design uses two TDI cones, four single cups, three cup spacers. The cones are match ground, therefore no cone spacer is required.
Either design can be supplied depending on the preference of the mill; however, the TQO is the most commonly used design.

There are a variety of special features that can be incorporated in the design of four row tapered rolling bearings, such as face notches, helical bore grooves, extended cones, re-lubrication accommodations, cups and/or cone seals, etc.

NTN  CRO-6031LL Four Row Bearings  
Mounted Units & Inserts
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NTN  CRO-19001 Four Row Bearings  
Pillow Block
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NTN  EE522126D/523087/523088D Four Row Bearings  
Insert Bearings
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NTN  6259/500 Four Row Bearings  
Bearings
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NTN  CRO-6910 Four Row Bearings  
Flange Block
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NTN  EE921150D/921875/921876D Four Row Bearings  
Cylindrical Roller Bearing
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NTN  T-HM262749D/HM262710/HM262710DG2 Four Row Bearings  
Mounted Units & Inserts
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NTN  623124 Four Row Bearings  
Pillow Block
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NTN  EE547341D/547480/547481DG2 Four Row Bearings  
Pillow Block
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NTN  LM778549D/LM778510/LM778510DG2 Four Row Bearings  
Pillow Block
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NTN  CRO-6426LL Four Row Bearings  
Single Row Ball Bearing
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NTN  CRO-5664LL Four Row Bearings  
Roller Bearings
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