Bearings four row cylindrical roller, model FCD2230120

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500 pc
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10000 pc/month

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Product Description:

Bearings four row cylindrical roller, model FCD2230120


Four row cylindrical roller bearings

Four row cylindrical roller bearing is usually use in rolling mill’s work roll or back-up roll. It mainly take much radial load, which is extensively used on the work roll of wire rod mill, section mill and bloomer mill , as well as the back-up roll of dressing machine, cold rolling mill and hot rolling mill.There are three kinds of structures: FC, FCD, FCDP. There are three grades for tolerance : 0 , 6 , 5.


FC: double outer ring, single inner ring, inner ring without rid;

FCD: double outer ring, double inner ring, inner ring without rid;

FCDP:double outer ring, double inner ring, inner ring without rid



★ Product Features:

The rollers of the cylindrical roller bearing are usually guided by two flanges of a ring.

Because this assembly part composed of cage, roller and guide ring can be separated from

another ring, the cylindrical roller bearing belongs to separable bearing. This type of bearing

can be easily mounted and dismounted. Its advantages are obvious especially when there is

interference fits between the inner, outer ring and the axis, housing.

This bearing is usually subjected to radial load, only the single-row bearing with inner& outer

rings flanges can bear small steady axial load or great intermittent axial load. It has a high

requirement on the processing of the fitting parts such as axis and housing bore, etc.


Product Application: 

Cylindrical roller bearings are mainly used for:

- Iron and steel metallurgical industry

- medium and large motor

- generator

- combustion engines

- gas tuibine

- machine tool spindle

- speed reducer

- loading and unloading machinery and all kinds of industrial machinery


Four Cylindrical Roller Bearings Catalugue







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Q:What are the materials of the homemade bearings / homemade Zhejiang Tianma cylindrical roller bearings / bearings?
Domestic bearings used in the cage and rivet and washer, spacer ring, sealing ring, pillar, pin etc. the material is divided into black metal materials (such as low carbon steel, stainless steel etc.), non-ferrous metal materials (such as brass, bronze and Aluminum Alloy etc.) and non metal materials (such as plastics, phenolic textolite three) etc..
Q:Cylindrical roller bearings N216E and N216EM after the code name is different,
Hello, E on behalf of hanging behind the cage (black) steel cage; EM stands for copper holder.
Q:Cylindrical roller bearings, mounting dimensions, specific meaning? Twenty
Da means shoulder diameter, that is to say, the maximum shoulder size is 69mm, and the minimum is 64mm
Q:Cylindrical roller bearings standard 10
Hello, according to the data you supplied, and the type of bearing you saidAfter my inquiry,Cylindrical roller bearings, without this specification, GB specifications are 25 diameter, 52 outer diameter height, 15 model is nu205eAlso, the inside diameter is 25, the outside diameter is 62, the height is 15. The model is nu305eGB specifications, I have herecontactLook at personal data
Q:Attention problems of cylindrical roller bearings
4, when the interference is large, the oil bath heating or inductor heating bearings can be used to install the heating temperature range of 80 degrees -100 DEG C, the maximum can not exceed 120 degrees centigrade. At the same time, the nut or other appropriate method is used to fasten the bearing so as to prevent the contraction of the bearing in the direction of width and to create a gap between the collar and the shaft shoulder. 5, single row tapered roller bearings installed, the final adjustment should be clearance. The clearance value shall be determined according to the working conditions and the magnitude of the interference fit. Test shall be carried out when necessary. Double row tapered roller bearings and pump shaft bearings have been adjusted for clearance at the factory, and no adjustment is necessary during installation. 6, the bearing should be installed after the rotation test, the first for the rotary shaft or bearing box, without exception, then the power for no load, low speed operation, and then gradually increase as the functioning of the rotation speed and load, and to detect noise, vibration and temperature, abnormal, should stop running and check. The running test is normal and can be used before delivery.
Q:What are the components of cylindrical roller bearings?
The utility model has the advantages of convenient installation and disassembly, especially when the inner, outer ring and the shaft and the shell are in interference fit. Such bearings are generally only used to bear radial load, only the inner and outer ring with single block bearings can bear less axial load or larger intermittent axial load.
Q:Can cylindrical roller bearings bear high temperature?
Bearing is not high temperature grease is not high temperature, a grease temperature does not exceed 120 degrees, high temperature will lead to bearing lubrication performance, unable to work, in fact, the bearing itself can be high temperature resistant.
Q:How are the twin row cylindrical roller bearings classified?
Double row cylindrical roller bearings have cylindrical inner bore and conical inner bore (bearing rear code plus K) two structures. This kind of bearing has the advantages of compact structure, large rigidity, large bearing capacity and little deformation after load. It is especially suitable for spindle support of machine tools. The conical inner hole can also play the role of micro adjustment of the clearance, and can simplify the positioning device structure, and is convenient for installation and disassembly.
Q:Full use roller bearings
The FAG space division has also been involved in the development of bearings and other NTN precision components for Airbus wide body passenger aircraft A380 engines. The fuel efficient Boeing 787 aircraft reduces consumption by 20% compared to similar NACHI aircraft fuels, thanks to its improved aerodynamics, better operating systems and lighter materials. From the general electric KOYO GEnx engine and the Trent 1000 engine Rolls-Royce also play a role in ensuring that the airplane plays a key role more fuel-efficient. This high performance, lighter weight engine bearing support also plays a key role in the engine. FAG Aerospace entered the concept of bearing development, the engine as early as 2005. TIMKEN bearings, China's general agent, the first prototype manufactured bearings are available in 2006 to provide general electric and Rolls-Royce, FAG rolling bearing device design factors. The first engine test operation, which took place in the fall of 2006, achieved very positive results. The civil aviation authority's approval process for the two engines will be completed by the end of 2007.. In the summer of 2008, the first batch of FAG bearings was delivered to the airline. The main production base for the FAG China production base in Shanghai and INA roller bearing Chinese sales center, as well as Germany, Canada, Sweden SKF bearing China general agent of American Timken FAG office production base. The key role of space rolling bearing FAG in Rawls Royce and general electric engine plays, FAG bearing supply of Boeing 787 aircraft, Japan NMB bearings, the two engines for the new long haul aircraft rely on Aerospace Corporation of FAG rolling bearing
Q:Why are there no double row cylindrical roller bearings in the mechanical design manual?
Normally, the inner diameter of the bearing should be in interference fit with the shaft (for some light loads, too, with a transition fit).

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