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  NNU4984K Multi-Row Roller Bearings  
NTN  NNU4984K Multi-Row Roller Bearings  
Periodic Lubrication
29 N/mm2;S
NTN  NN3028 Multi-Row Roller Bearings  
NTN  NN3028 Multi-Row Roller Bearings  
Split Cylindrical Ro
13.0000 in
NTN  NN3056 Multi-Row Roller Bearings  
NTN  NN3056 Multi-Row Roller Bearings  
15.2500 in
6.4375 in
NTN  NNU3060 Multi-Row Roller Bearings  
NTN  NNU3060 Multi-Row Roller Bearings  
Standard Duty
5.3750 in
NTN  NNU3068 Multi-Row Roller Bearings  
NTN  NNU3068 Multi-Row Roller Bearings  
848330
SS
NTN  NN3932 Multi-Row Roller Bearings  
NTN  NN3932 Multi-Row Roller Bearings  
0.34
0.0919
NTN  NN3022 Multi-Row Roller Bearings  
NTN  NN3022 Multi-Row Roller Bearings  
Open
Without Snap Ring
NTN  NN3020 Multi-Row Roller Bearings  
NTN  NN3020 Multi-Row Roller Bearings  
0.020 in
0.24 lb
NTN  NN3034K Multi-Row Roller Bearings  
NTN  NN3034K Multi-Row Roller Bearings  
0328005000
250 mm
NTN  NN3936K Multi-Row Roller Bearings  
NTN  NN3936K Multi-Row Roller Bearings  
Oil-Impregnated Sint
1200 fp/min
NTN  NNU3184 Multi-Row Roller Bearings  
NTN  NNU3184 Multi-Row Roller Bearings  
Class 2
4.3750 in
NTN  NN3932 Multi-Row Roller Bearings  
NTN  NN3932 Multi-Row Roller Bearings  
24.9950 in
TDO Assembly
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Product Categories
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
SKF 7309 Bearing
Koyo 6207 Bearing
Dac3055w Bearing
Koyo 6306 Bearing