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-5650 Four Row Bearings  
Bearings
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NTN  EE275106D/275155/275156D Four Row Bearings  
Pillow Block
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NTN  CRO-8204LL Four Row Bearings  
Flange Block
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NTN  CRO-9107LL Four Row Bearings  
Flange Block
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NTN  CRO-6143LL Four Row Bearings  
Flange Block
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NTN  M257149D/M257110/M257110D Four Row Bearings  
Pillow Block
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NTN  CRO-6022 Four Row Bearings  
Flange Block
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NTN  LM274449D/LM274410/LM274410D Four Row Bearings  
Flange Block
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NTN  CRO-13202 Four Row Bearings  
Insert Bearings
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NTN  LM761649D/LM761610/LM761610D Four Row Bearings  
Flange Block
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NTN  CRO-2151 Four Row Bearings  
Flange Block
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NTN  CRO-3210 Four Row Bearings  
Pillow Block
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