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-10702 Four Row Bearings  
Tapered Roller Bearings Assembly
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NTN  M283449D/M283410/M283410D Four Row Bearings  
Pillow Block
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NTN  CRO-13602 Four Row Bearings  
Flange Block
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NTN  CRO-3617 Four Row Bearings  
Flange Block
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NTN  CRO-5227LL Four Row Bearings  
Flange Block
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NTN  CRO-6910 Four Row Bearings  
Mounted Units & Inserts
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NTN  CRO-10008 Four Row Bearings  
Pillow Block
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NTN  CRO-7901 Four Row Bearings  
Cam Followers Stud Type
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NTN  EE329119D/329172/329173D Four Row Bearings  
Flange Block
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NTN  LM258649D/LM258610/LM258610D Four Row Bearings  
Pillow Block
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NTN  CRO-5305 Four Row Bearings  
Flange Block
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NTN  CRO-11701 Four Row Bearings  
Plain Bearings
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