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-6042LL Four Row Bearings  
Bearings
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NTN  CRO-5215 Four Row Bearings  
Pillow Block
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NTN  CRO-5710 Four Row Bearings  
Take Up Units
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NTN  623172 Four Row Bearings  
Flange Block
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NTN  M284148D/M284111/M284110DG2 Four Row Bearings  
Flange Block
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NTN  CRO-14601 Four Row Bearings  
Pillow Block
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NTN  623044 Four Row Bearings  
Sleeve Bearings
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NTN  EE931170D/931250/931251XDG2 Four Row Bearings  
Single Row Ball Bearing
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NTN  81576D/81962/81963D Four Row Bearings  
Flange Block
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NTN  CRO-10214 Four Row Bearings  
Pillow Block
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NTN  EE127097D/127137/127137D Four Row Bearings  
Pillow Block
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NTN  CRO-8010 Four Row Bearings  
Flange Block
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