four row cylindrical roller bearing FC202870

four row cylindrical roller bearing

1. Cylindrical roller bearings are available in many designs, dimension series and sizes. The majority are single row bearings with a cage. Single and double row full complement bearings (without cage) complete the standard assortment for general engineering. Bearings with a cage can accommodate heavy radial loads and operate at high speeds. Full complement bearings are suitable for very heavy radial loads at moderate speeds.

2. In cylindrical roller bearings, the rollers are a key component. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimises rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.

3. In a single row cylindrical roller bearing, the rollers are always guided between the integral "open flanges" on one of the rings. These "open flanges" combined with the specially designed and surface treated roller ends, provide improved lubrication, reduced friction and consequently lower operating temperature.

4. The ring with the integral flanges together with the cylindrical roller and cage assembly can be separated from the other ring. This results in easy mounting and dismounting, particularly where the load conditions are such that interference fits are required for both rings.

5. Single row cylindrical roller bearings can accommodate heavy radial loads and high speeds. They are manufactured in several different designs, the main difference being in the configuration of the flanges. The most popular are the NU, N, NJ and NUP designs.

6. Applications:
Electric motor, automotive, industrial transmission, double-row cylindrical roller bearings are greatly used for the spindles of machine tools

7. Models available:
1) NU, NJ, NUP and N design, single row cylindrical roller bearings, caged
2) NNU and NN design, double row cylindrical roller bearings, caged
3) Multi-row cylindrical roller bearings, caged.
4) NCF and NJG design, single row full complement cylindrical roller bearings
5) NNF desgin, double row full complement cylindrical roller bearings
6) Multi-row full complement cylindrical roller bearings, with four or eight rows of rollers.

Wafangdian Sihai Bearing Making Co., Ltd. was established in 1998 and is situated in No. 134, Northern Lane of Beigongji Street, Wafangdian, Dalian City. Our company covers an area of more than 2000 square meters, including more than 1600 square meters of buildings. We specialize in producing deep groove ball bearings, cylindrical roller bearings, taper roller bearings, angular contact ball bearings, thrust ball bearings, spherical thrust roller bearings, long cylindrical roller bearings, spherical ball bearings and spherical roller bearings. Our annual output is 15,000 units and the output value is 60 million RMB. Our products are widely used in metallurgy, forge, mine, petroleum, heavy machinery, engineering machinery and other industries. They sell well in 24 provinces and autonomous regions in domestic market and are exported to the United States, Germany, Brazil, Russia, South Korea, India, Southeast Asia and the Middle East. Our brand is "WZZW" which was honored as "Liaoning Province Famous Trademark" and "Dalian City Famous Trademark". We attained ISO9001:2000 certification in 2000. Quality is our life and customer satisfaction is our eternal pursuit. We apply new technology to further improve the product quality. We hope to cooperate with customers from all over the world to create an excellent future.