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Double Row Cylindrical Roller Bearings

Update time:2017-09-05 16:07:36
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Double row cylindrical roller bearings with cage

 

NPB’s double-row cylindrical roller bearings are divided into bearings with cylindrical inner bore and tapered inner bore(with suffix K). This type of bearing has their advantages, such as compact structure, good rigidity, heavy load carrying capacity, and little distortion under loads. Therefore they are mainly used in machine tools, rolling mill stands, plastic calenders, grinding mills and also large gearboxes.

 


                                         fig.2

• NN, NNU design

Bearings of type NN have three integral flanges on the inner ring and a flangeless outer ring. Bearings of type NNU have three integral flanges on the outer ring and a flangeless outer ring(fig.2).

Therefore, these bearings are used as non-locating bearings and permits axial displacement in double directions of the housings relative to the shaft.

 

 

 

Double row full complement cylindrical roller bearings

 

The basic assortment of double row full complement cylindrical roller bearings includes NNCL, NNCF and NNC open design bearings, as well as sealed NNF design bearings(fig.9). All bearings are non-separable and have an annular groove and three lubrication holes in the outer ring to facilitate lubrication. NNF design bearings have three additional lubrication holes in the inner ring.

as there advantages, such as compact structure, good rigidity, heavy load carrying capacity, and little distortion under loads. Therefore they are mainly used in machine tools, rolling mill stands, plastic calenders, grinding mills and also large gearboxes.


                                                                                       fig.9

 

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