I provided a large cylindrical roller bearings have a single row (NU, N) and double row (NN, NNU type) are two types.
     Single row cylindrical roller bearings, N-type structure for the outer ring of double-wall and inner wall-free, NU-double with inner and outer wall with ribs.
     Double row cylindrical roller bearings, NN-type structure of the outer ring and inner wall of the three has no wall, NNU with three inner-wall, no wall outer ring.
     NNU and NN-bearing structure are floating bearings, in order to the installation and dismantling the sake of convenience, their inner and outer ring is designed to separate into processing, such as the exchange should be asked in advance to the company.
     Double row cylindrical roller bearing cage materials commonly used by steel or brass from the processing machine cut.
     Of the samples included in models bearing the basic model, such as customers bearing a special request should be made bearing in the model after loading the corresponding letters, such as NNU4956MC3/W33, that entity brass cage, C3 Group clearance, the outer ring A tank and three hole.

Abot Narui：

Tianjin Narui Bearing Co., Ltd. is a professional bearing suppliers, mainly engaged in the import and export business bearing. Bearing in China more than the manufacturer's support, the provision of nine major categories bearings, bearing more than 500 kinds of models of service.
Bearing main types: ball bearings, deep groove ball bearings, roller bearings, tapered roller bearings and cylindrical roller bearings, spherical bearing, thrust bearings, spherical roller bearings, needle roller bearings, and so on.
Acting at the same time we also all countries in the world bearing brand advantages, such as: SKF Bearings, FAG bearings, NSK Bearings, TIMKEN Bearing
Our advantages: bearing the full range, price concessions, ensure the quality, service-oriented late.
If you are interested in our products, welcome to contact us and look forward to hearing from you.