High load carrying capacity and high stiffness double row cylindrical roller bearings

Double row cylindrical roller bearings have a low cross section, high load carrying capacity and high stiffness. Therefore they are mainly used in machine tools, rolling mill stands, plastic calenders, grinding mills and also large gearboxes.

Double row cylindrical roller bearings mainly in the NNU design and the NN design .The bearings are separable, i.e. the ring with integral flanges together with the roller and cage assemblies can be mounted separately from the other bearing ring or all bearing components can be mounted separately. This facilitates the mounting, inspection and maintenance of these bearings.

Double row cylindrical roller bearings are produced with both cylindrical bore and tapered bore; bearings of the NN design are generally supplied with tapered bore. When mounting bearings with tapered bore it is possible to achieve a certain radial internal clearance or a given preload.

The bearings, except those of the NNUP design allow axial displacements between shaft and housing to take place inside the bearing itself within certain limits.

Beijing RKF Mechanical & Electrical Equipment Co., Ltd., is an manufacturer and export-oriented enterprise, specializing in marketing various types of bearings. Our first factory was established in 1995 in Hebei province. We mainly did domestic business in the early years and since 2005 we have started to develop the oversea markets. Our products include Deep Groove Ball bearings, Cylindrical Roller Bearings, Tapered Roller Bearings, Self-aligning Ball Bearings, Insert Bearings, Thrust Ball Bearings, Needle Roller Bearings, etc. We have obtained ISO9001 and ISO14001 certifications.

We have two factories. One is located in Hebei province and the other one Shandong province, both with the big warehouses. We set an office for exportation in Beijing, the capital city of China, with an smaller warehouse here, more than 100 square meters. We have set up wide business channels around the country and cooperated with Russia and Vietnam for many years.

To ensure the quality of every piece of bearings, we not only choose every manufacturer very carefully and strictly, but also have our own institution to do inspection. All of the workshops are well equipped with automatic machine and precision testing machine.

With a satisfactory variety of products, superior quality and excellent after-sale services, we enjoy a high reputation among both domestic and foreign customers. We obey the rule: " high quality - low price - sincerity - customer", and will continue to follow its original philosophy to furnish high quality and reliable products.

Welcome the friends all over the world to develop and cooperate together!