NN3056K Double Row Cylindrical roller Bearings mill roll bearing

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Product Description:

Specification of Double Row Cylindrical roller bearings:


Double row Cylindrical roller bearings belong to separable bearings, whose inner and outer rings are linearly contacted with rollers. They have small friction coefficient, bigger capacity of bearing  radial load and are applicable to both bearing heavy load and impact load and high-speed rotation. Cylindrical roller bearings have the advantages of compact structure, strong stiffness, big bearing capacity, small deformation after loaded etc.


CNBM has already successfully developed split cylindrical roller bearings which can be freely installed at any time and any place, to meet the demand of driving and conveying rollway bearings at cooling area of continuous casting. CNBM also can provide special cylindrical roller bearings according to requirement of customers.


Product Application: 


- Iron and steel metallurgical industry

- Medium and large motor

- Generator

- Combustion engines

- Machine tool spindle

- Speed reducer

- Loading and unloading machinery and all kinds of industrial machinery



Double row cylindrical roller bearings


- NN double row cylindrical roller bearings

This kind of bearings with inner rid, no outer rid. This assembly part  can be separated from another ring, and they have larger radial load capacity than other single row cylindrical roller bearings with the same size, but the axial or housing is free axial displacement, so this kind of bearings can only bear the axial load.


- NNU, NNU…K double row cylindrical bearings

NNU,NNU...K type bearings with outer rid, no inner rid. There are tow kinds of holes, one is cylindrical hole, and another is tapered hole. Axial or housing is free axial displacement, so this kind of bearings can not bear the axial load. But these kind of bearings have larger radial load capacity than other single row roller bearings with the same size.


- NUP single row cylindrical roller bearings

NUP type bearings with double outer rid, single inner rid and  loose rid, this design is possible to limit the axial displacement of the shaft or the housing in double direction within the scope of the axial clearance. in addition they mainly used to bear radial load, also can withstand diameter, the axial union load. Therefore this NUP suitable for fixed end bearings.


- NNCF double row cylindrical bearings

NNCF type bearings with three inner rids and one outer rid. They can take a direction axial positioning. There is a fixed ring in the other side of the outer rid, it can make bearing keep as one.


Double Row Cylindrical Roller Bearings Catalogue:


DesiganationsBasic load rating KNPrincipal dimensionsSpead   ratings
    rpm.
Weight


CrCordDBrEw.FwGreaseOilkg
 NN3032K   345   675   160   240   60   2.1   219   3800   3200   8.39  
 NN3032KTN1   345   335   160   240   60   2.1   219   3800   3200   7.86  
 NN3032K/W33   345   675   160   240   60   2.1   219   3000   2200   8.38  
 NN3032K/YB2   345   675   160   240   60   2.1   219   3000   2200   8.39  
 NN3032   345   675   160   240   60   2.1   219   3000   2200   8.38  
 NN3034K   435   860   170   260   67   2.1   236   3600   3000   12.9  
 NN3034/YA8   435   860   170   260   67   2.1   236   3000   2200   13.3  
 NN3036K   555   1090   180   280   74   2.1   255   3400   2800   16.9  
 NN3036   555   1090   180   280   74   2.1   255   2800   2000   16.9  
4382936 337   703   180   250   69   2.3   201   2800   2000   9.8  
 NN3038K   565   1140   190   290   75   2.1   265   3200   2600   17.9  
 NN3038K/W33   565   1140   190   290   75   2.1   265   2600   1900   17.1  
 NN3038   565   1140   190   290   75   2.1   265   2600   1900   18  
 NNU4938B-W33   560   1250   190   260   69   3   212   2600   1900   11  
 NNU6038   1260   3200   190   290   180   2.1   219   2600   1900   43.6  
 NN3034K   675   1340   200 310  82   2.1   282   3000   2400   22  
 NN3034  6751340200310822.12822400190022.1
 NN3044K  79516102203409033102800220030.1
 NN3044K/W33  79516102203409033102200180030
 NN3044  79516102203409033102200180031
 NN3048K  81016902403609233302600200032.7
 NN3048  81016902403609233302000170031.6
 482752U  6051500260360802.12821600190028.2
 NN3056K  1060229028042010643842200180049.7
 NN3056  1060229028042010643841700140052.3
31821601290279030046011844181200150076.2
32821601290279030046011844181200150077.9
 31821/600  405098506008702006805600800384
 32821/600K  405098506008702006805600800403
 31821/630  4350106006309202127.5850550750438
 32821/630K  4350106006309202127.5850550750460
 NN3030K  330650150225562.1206400034007.7
 NN3030/YA8  330650150225562.1206400034007.7
 NN3030  330650150225562.1206320024007.75
 NN3030/C9  330650150225562.1206320024007.75
 NN3030/C9YA8  330650150225562.1206320024007.79
 NN3030K/C91W33  330650150225562.1206320024007.7



           


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Q:Seek expert help: cylindrical roller bearings, grease injection, the operation of a short period of time, grease is thrown out, what is the reason, how to solve? Two hundred
I carefully read your question, I think the following talk about my views, this system from the point of view of the design, are questionable, at least the following several aspects of the design problem, put forward for reference only:1, the system does not have [oil seal], can only say that the design of the beginning of the consideration is somewhat lacking.2, [] general should choose roller bearing oil bath lubrication [], [] instead of grease, because the roller in the roller bearing [] [] in the grease, the grease has a strong crowding out of [], which leads to bad lubrication.3, [] grease generally rely on the mechanism of working temperature Shenglai improve grease liquidity, but need to have [] to seal and prevent the overflow of grease, no seal mechanism design [] summary, this place is only [] However, boundary lubrication, boundary lubrication [] [generally used for oil lubrication], [grease] rather than
Q:Is the roller bearing and the bearing chamber movable in the tapered rotor motor?
E in cylindrical roller bearing is the meaning of improving internal cage design, similar to the SKF cylindrical roller bearing EC form, this type of bearing than without E, is to strengthen the design, the roller is filled more larger to increase the load. From the load point of view, it is better to choose E.
Q:How much is the axial force of double row cylindrical roller bearings? How is it calculated?
The cylindrical roller bearings have ribs can withstand certain axial force, the axial force for cylindrical but still belongs to the non normal stress, can cause early failure of the bearing, it is generally not given the axial bearing capacity, no formula
Q:The Russian bearing suffix No. ZST is a cylindrical roller bearing
The suffix code is not used to distinguish the bearings, but it helps to explain the structure of the bearings and the material.
Q:Does the use of cylindrical roller bearings reduce the limit speed?
Well, as long as the shaft is well done and the structure is reasonable, what can't be done? I haven't seen the theory of 30%. Cylindrical roller bearings are easy to process, so they have high precision and high limit speed.
Q:Cylindrical roller bearings standard 10
Bearing (Bearing) is an important component of modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement and guarantee its rotation accuracy.According to the friction property of the moving element, the bearings can be divided into two kinds: rolling bearing and sliding bearing. Among them, the rolling bearing has been standardized and serialized, but compared with the sliding bearing, its radial dimensions, vibration and noise are relatively large, and the price is higher.Generally, the rolling bearings are composed of four parts: the outer ring, the inner race, the rolling body and the cage. According to the shape of the rolling element, the rolling bearings are divided into two major categories: ball bearings and roller bearings.
Q:Double row cylindrical roller bearings how to disassemble?
If it is replaced, use the flame to heat it quickly under the conditions permitted! The inner ring is heated and expanded and removed rapidly; flame cutting is used directly.
Q:How should I find the concentricity of cylindrical roller bearings after installation?
So, in the machining process, try to use special fixtures and parts drawing in tol and other measures to avoid such a remedy".
Q:What are the materials of the homemade bearings / homemade Zhejiang Tianma cylindrical roller bearings / bearings?
The 2 kind of bearing retainer material is mostly copper, and the retainer pin is also copperThere is also a steel retainerImported bearings also have copper and steel
Q:NSK cylindrical roller bearings EW/EM series of differences and characteristics
E international is called "reinforced type" load, also means to increase rolling bodyW international is called a steel cageM international is called brass retainerThis can be a question, just ask, for reference only

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