Cylindrical roller bearing are of high load capacity and can operate at high speeds because they use rollers as their rolling elements. They can therefore be used in applications involving heavy radial and impact loading.

The rollers are cylindrical in shape and crowned at the end in order to reduce the stress concentrations. They are also suitable for applications that require high speed because the rollers are guided by ribs which are either on the outer or inner ring.

More information

With the absence of ribs, either the inner or outer ring will move freely so as to adjust to axial movement hence can be used as free side bearings. This enables them to absorb shaft expansion to a certain extent, relative to the housing position.

NU and NJ type cylindrical roller bearing produce high performance results when used as free side bearings because they possess the required characteristics for that purpose. NF type cylindrical roller bearing also supports the displacement of the axial to a certain extent in both directions and therefore can be used as a free side bearing.

In applications where heavy axial loads have to be supported, cylindrical roller thrust bearings are the most suitable. This is because they are designed to contain shock loads, are stiff and the axial space required is little. They only support axial loads that are acting in a single direction.

Detailed applications

Specifically, our cylindrical roller bearings can be used in industrial transmission, automotive, electric motor, generator sets, elevating machinery, machine tool spindles as well as internal-combustion engines, etc.

Advantages

These roller bearings can be separated and are easy to mount as well as dismount.

Product specification

Our factory

Product Parameters

About us
Ningbo Demy (D&M) Bearings Co., Ltd. was established in 2005 and  one of leading ball & roller bearing manufacturers & belt, chain, auto-parts exporters in China. It is specialized in research and development for various kinds of high precision, non-noise, long-life bearings, high quality chains, belts, auto-parts and other machinery&transmission products. At present, demy has more than 500 employees and produces 50 million sets of bearings annually. Due to our many years of experience and our own manufacturing in yuyao china bearing town , DEMY has already served thousands of customers around the world.we participate in major professional exhibitions at home and abroad every year.




Good quality control and competitive prices
Each goods is processed by our internal quality management (ISO 9001:2000) with the corresponding testing, such as noise testing, checks of grease application, sealing checks, hardness degree of the steel as well as measurements.

Adherence to delivery dates, flexibility and reliability have had strong foundations in the corporate philosophy for years now.

DEMY is good at offering customer-specific quality at attractive and competitive prices.



Why  Choose  US ?
1. History : DEMY(D&M)BEARING CO., LTD is located in Hemudu Culture Ruins of Ningbo China which has 7000-year-old history. It is specialized in research and development for various kinds of high precision, non-noise, long-life bearings, high quality chains, belts, auto-parts and other machinery&transmission products.

2. Enterprise Scale:  The company has manufacturing space of more than 30,000 square meters and has 20 sets of automatic gringding production lines, automatic assembly lines with the annual production capacity of 25 millions sets.

3. Export experience :  Our company is one of the biggest bearing manufacturers and exporters in china. Our products are sold all over the world, include Europe, North America, the Middle East, Southeast Asia and South America etc.


4. Brand :  We have two independent brands : BMT ; Luman bearing. OEM also is accepted.

5 . Quality Control :  Each goods is processed by our internal quality management (ISO 9001:2000) with the corresponding testing, such as noise testing, checks of grease application, sealing checks, hardness degree of the steel as well as measurements.Adherence to delivery dates, flexibility and reliability have had strong foundations in the corporate philosophy for years now.

6. Service :  High quality, good credit and excellent service are the tenet of our company. Customers'satisfaction is our lifeline, as well as our highest honor. We will do our best to meet your requirements, and will do better in the future.