GGB BEARING CO., LTD.

NSK 6301 Bearing

 

Multi-Row Roller Bearings  

Multi-Row Roller Bearings are primarily designed and used as roll-neck bearings in rolling mills. The four rows of rollers lends itself to carry large radial loads for the given bearing cross section. Contoured rollers with tight diametrical tolerances maximize the ability of this bearing to evenly distribute the load to all four rows. Most common types include the use of a machined brass finger cage or a machined mild steel finger cage. No suffix is required for the brass cage but the SM suffix is used for the steel. In larger sizes, the use of a steel pin type cage with hollow rollers is standard. Many outer race and inner race configurations and design types are available to meet installation or interchangeability requirements. Most bearings are supplied with C4 Internal Radial Clearance and P5 Accuracy to perform well in these roll neck applications.

 

A big advantage of multi-row  roller bearings is their very high radial load capacity. Due to the large number of rolling elements the impact force is well distributed. The friction is lower than at other multi row bearing types. Multi row cylindrical roller bearings cannot absorb axial forces. However, in service an axial displacement is possible.

 

NTN  NNU4928 Multi-Row Roller Bearings  
NTN  NNU4928 Multi-Row Roller Bearings  
0.0026 in
0.25
NTN  NN3022K Multi-Row Roller Bearings  
NTN  NN3022K Multi-Row Roller Bearings  
Three-Bolt Flange
0.5000 in
NTN  NN4934K Multi-Row Roller Bearings  
NTN  NN4934K Multi-Row Roller Bearings  
2-9/32 in
1.9375 in
NTN  NN3044K Multi-Row Roller Bearings  
NTN  NN3044K Multi-Row Roller Bearings  
Round
Non-Expansion Bearin
NTN  NN3126 Multi-Row Roller Bearings  
NTN  NN3126 Multi-Row Roller Bearings  
8.0000 in
EMP
NTN  NNU4988K Multi-Row Roller Bearings  
NTN  NNU4988K Multi-Row Roller Bearings  
0883450078610
2.90
NTN  NNU3040 Multi-Row Roller Bearings  
NTN  NNU3040 Multi-Row Roller Bearings  
25mm
10.1
NTN  NN3032K Multi-Row Roller Bearings  
NTN  NN3032K Multi-Row Roller Bearings  
116000 lbs
C0
NTN  NNU49/750 Multi-Row Roller Bearings  
NTN  NNU49/750 Multi-Row Roller Bearings  
2.8346 in
3150 lbs
NTN  NN3964 Multi-Row Roller Bearings  
NTN  NN3964 Multi-Row Roller Bearings  
120mm
Standard
NTN  NNU4920K Multi-Row Roller Bearings  
NTN  NNU4920K Multi-Row Roller Bearings  
NTN 
NNU4920K
NTN  NN4964 Multi-Row Roller Bearings  
NTN  NN4964 Multi-Row Roller Bearings  
Set Screw
3210 lbf
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CYLINDRICAL ROLLER THRUST BEARINGS
Double Row Bearings
DOUBLE-ROW BEARINGS
DOUBLE-ROW CYLINDRICAL ROLLER BEARINGS
FOUR-ROW CYLINDRICAL ROLLER BEARINGS
FULL-COMPLEMENT CYLINDRICAL ROLLER BEARINGS
Multi-Row Roller Bearings  
Roll Bearings for Mills
Roller Bearings
ROLLING BEARINGS FOR STEEL MILLS
Sealed roll neck Bearings
SEALED-CLEAN FOUR-ROW BEARINGS
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Koyo 6207 Bearing
Dac3055w Bearing
Koyo 6306 Bearing