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-9725LL Four Row Bearings  
Take Up Units
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NTN  CRO-11101 Four Row Bearings  
Mounted Cartridge Units
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NTN  CRO-11101 Four Row Bearings  
Pillow Block
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NTN  M280349D/M280310/M280310DG2 Four Row Bearings  
Pillow Block
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NTN  LM767745D/LM767710/LM767710D Four Row Bearings  
Roller Bearings
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NTN  CRO-14209LL Four Row Bearings  
Flange Block
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NTN  CRO-3210 Four Row Bearings  
Flange Block
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NTN  CRO-4412 Four Row Bearings  
Mounted Units & Inserts
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NTN  CRO-4436LL Four Row Bearings  
Pillow Block
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NTN  CRO-12604 Four Row Bearings  
Flange Block
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NTN  625988 Four Row Bearings  
Pillow Block
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NTN  LM278849D/LM278810/LM278810D Four Row Bearings  
Flange Block
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