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  625964 Four Row Bearings  
Flange Block
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NTN  CRO-10402 Four Row Bearings  
Cam Followers Stud Type
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NTN  CRO-2252 Four Row Bearings  
Pillow Block
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NTN  CRO-6426LL Four Row Bearings  
Pillow Block
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NTN  CRO-11216 Four Row Bearings  
Flange Block
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NTN  LM765149D/LM765110/LM765110D Four Row Bearings  
Take Up Units
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NTN  CRO-7612 Four Row Bearings  
Pillow Block
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NTN  623134 Four Row Bearings  
Pillow Block
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NTN  CRO-8010 Four Row Bearings  
Pillow Block
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NTN  M241538D/M241510/M241510D Four Row Bearings  
Insert Bearings
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NTN  CRO-6143LL Four Row Bearings  
Pillow Block
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NTN  EE724121D/724195/724196D Four Row Bearings  
Pillow Block
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