Cylindrical Roller Bearing , Chinese Factory RNU 203 E

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10 set
Supply Capability:
100000 set/month

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Product Description:

Product Specifications:

Cylindrical roller and race for line contact bearing. Load capacity is big, mainly bear radial load .

1. Friction coefficient is small, suitable for high speed limit speed close to deep groove ball bearings

2.N and NU type axial movement, can adapt to shaft caused by thermal expansion or installation error and shell the change of relative position, can be used for free end bearing

3. On the shaft or hole of the processing and the demand is higher, bearing outer axis relative deflection after installation to be kept under strict control, so as not to cause contactstress concentration

4. Inner ring or outer ring separable, easy to install and remove


Model No.: RNU 203 E

Brand Name: OEM


Net weight: 0.06kg

Material: Chrome steel

Cage: Brass, Steel


1) Precision: P6 P5 P4 P2

2) Noise level: Z1, Z2, Z3, Z4

3) Vibration Level: V1, V2, V3, V4   

4) Clearance: C2, C3, C4     

5) Hardness: 58-63 HRC             

6) Greese: As your requirement, such as SRL, PS2, Alvania R12 and so on.


1.Industrial packing: box

2.Commercial packing: box then into standard carton/wooden Box

3.According customer's requirement


T/T, L/C, Western Union

Delivery time

About 3 to 5 working days


Warrantee: 1 year

Samples: available

 OEM: available

Free technical support and after-sales service

Packaging & Delivery

Packaging Details:

plastics wrapping bearings - wrapping papers - polywoven bag - carton for outside package - wooden box /According to your order

Delivery Detail:

30-40days/according to your order

Product Applications:


Cylindrical Roller Bearing Application Flied:Rolling Mills,Crusher,Mining 

Metallurgy Petroleum,Chemical Industry,Engineering Machinery,Port,Oil,Gas,

Wind,Agriculture,Lathe,CNC,Steel Works,Electrical Machinery,Axle/Limber,

Tractor,Autocar,Crude Oil Engine and so on.

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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:Double row full cylindrical roller bearings, NNCF5008 installation, we need to pay attention to the direction of it?
Double row cylindrical roller bearings have no directionality, so they do not need to pay attention to the direction! However, it should be noted that the inner ring and outer ring should be positioned separately to prevent axial movement!
Q:Cylindrical roller and bearing outer ring processing is sheet metal forming?
Rolling bearings are made by special bearing factories and manufactured by precision special machine tools. It is a highly specialized field in mechanical manufacture. Precision bearings are the key parts to determine the accuracy and operation of the machine. At present, China mainly relies on imports (such as Japan NSK bearings) in high precision bearings.
Q:Is the nu240em cylindrical roller bearing split?
Cylindrical roller bearings are generally used to bear radial load, compared with deep groove ball bearings of the same size, with larger radial load capacity, speed limit is closer to the deep groove ball bearing, but the processing with the shaft and the bearing shell with high requirements, allow the inner ring and the outer ring axis axis inclination is small (2 degrees -4 two degrees), such as the axis is tilted beyond the limits, contact roller and raceway will worsen, seriously affect the load bearing capacity, reduce the service life of the bearing.
Q:Cylindrical roller bearings, mounting dimensions, specific meaning? Twenty
I don't know what you mean. The size of NUP2311E is: inside diameter, 55mm, outside diameter, 120mm height: 43
Q:Does the thrust cylindrical roller bearing need a bearing seat?. Five
In general, this kind of bearing does not use the bearing seat
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).
Q:What is called a semi convex roller, a fully convex roller, a logarithmic curve roller?
What is called a semi convex roller, a fully convex roller, a logarithmic curve roller?Semi convex, convex roller is in plane roller axis, the outer surface of a continuous or discontinuous convex curved basic cylindrical or conical roller, to prevent the end of the roller and raceway contact stress concentration. The roller is generally defined as a convex roller and a modified roller.
Q:Why are cylindrical roller bearings suitable for traveling support?
Should be the inner ring and the outer ring without the edge of the can do moving support. Cylindrical roller bearings without inner sides of the inner ring or outer ring, whose inner and outer rings can be moved relative to the axial direction, so they can be used as free end bearings.
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.

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