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LUOYANG MONTON BEARING SCIENCE & TECHNOLOGY CO.,LTD.
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Smooth Anti Rust Cylindrical Ball Bearing Single Row NJ 308 EM For Machinary

LUOYANG MONTON BEARING SCIENCE & TECHNOLOGY CO.,LTD.
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LUOYANG MONTON BEARING SCIENCE & TECHNOLOGY CO.,LTD.
City: Luoyang
Province/State: Henan
Country/Region: China
Tel: 86--13213639372
Contact Person:
Mr Dave-Lee

Smooth Anti Rust Cylindrical Ball Bearing Single Row NJ 308 EM For Machinary

Brand Name : MONTON
Model Number : NJ 308 EM
Certification : ISO9001
Place of Origin : LUOYANG
MOQ : 1PC
Price : 4USD/pc
Payment Terms : T/T, Western Union
Supply Ability : 10000pcs/months
Delivery Time : 10days
Packaging Details : Sigle packing+wooden case or pallets
Material : GCr15 or GCr15SiMn
Accuracy : P5,SP,P4,UP
Row : Single or double
Quality System : ISO9001-2008
Service : OEM Customized Services
Sample : Available
Types : Open or sealed
Function : Mechanical Engineering
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Cylindrical roller bearing


StructureSingle row Cylindrical roller bearing
Brand NameMonton/OEM
SeriesN/NF/NJ/NU/NUP series Cylindrical roller bearing
Seals TypeOPEN
Ring MaterialChrome Steel GCr15
HardnessHRC60~HRC65
Material of CageSPCC / Nylon /Brass
SurfaceSmooth and Anti-rust
Tolerance StandardISO 9001:2008
Accuracy classABEC1(P0) / ABEC3(P6) / ABEC5(P5) / ABEC7(P4)
Noise LevelZ1; Z2; Z3
SampleAvaliable

Drawing

single row cylinderical roller bearings NJ 308 EM for machinarysingle row cylinderical roller bearings NJ 308 EM for machinary


What is a Cylindrical Roller Bearings?

Cylindrical roller bearings 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 bearings 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.

N Series- Bearings of N design are single row cylindrical roller bearing and have two fixed ribs on the inner ring that retain the rollers and cage and one smooth outer ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, N Series rolling bearings are used in non-locating bearing units. Also, the N Series bearings have virtually no thrust capacity.


NU Series- Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and one smooth inner ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, NU Series rolling bearings are used in non-locating bearing units. Also, the NU Series bearings have no virtually thrust capacity.


NN Series- Bearings of NN design are double row cylindrical roller bearing and have three fixed ribs on the inner ring that retain the rollers and cage and one smooth outer ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, N Series rolling bearings are used in non-locating bearing units. Also, the NN Series bearings have no virtually thrust capacity.


NNU Series- Are double row cylindrical roller bearings and have three fixed ribs on the outer ring and one smooth inner ring. This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, NU Series rolling bearings are used in non-locating bearing units. Also, the NNU Series bearings have no virtually thrust capacity.


single row cylindrical roller bearings :N NU NJ NF NUP NFP NH(NJ+HJ)

double row cylindrical roller bearings :NN NNU NNF

four row cylindrical roller bearings :FC FCD

full complement cylindrical roller bearings


Application
widely used in automobile, electrical equipment, instrument, building machinery, rolling stock agricultural machinery and various specialized machineries,machine spindle application and are used for cool and hot mills.

Technology

N/NU/NJ N211 cylinderical roller mill bearing manufacturer in China

Numberd(mm)D(mm)B(mm)Weight(kg)
N202ENJ202ENU202E1535110.049
N203ENJ203ENU203ENUP203E1740120.068
NJ2203ENU2203ENUP204E1740160.055
NJ303ENU303ENUP303E1747140.127
N204ENJ204ENU204ENUP204E2047140.119
NJ2204ENU2204ENUP2204E2047180.154
NJ304ENU304ENUP304E2052150.16
NJ2304ENU2304ENUP2304E2052210.224
N205ENJ205ENU205ENUP205E2552150.145
N206ENJ206ENU206ENUP206E3062160.219
N207ENJ207ENU207ENUP207E3572170.317
N208ENJ208ENU208ENUP208E4080150.399
N209ENJ209ENU209ENUP209E4585190.457
N210ENJ210ENU210ENUP210E5090200.517
N211ENJ211ENU211ENUP211E55100210.693
N212ENJ212ENU212ENUP212E60110220.909
NJ2213ENU2213ENUP2213E65120311.54
N314ENJ314ENU314ENUP314E70150352.89
NJ2315ENU2315ENUP2315E75160555.14
N216ENJ216ENU216ENUP216E80140261.62
N317ENJ317ENU317ENUP317E85180414.8
NJ2218ENU2218ENUP2218E90160403.29
N219ENJ219ENU219ENUP219E95170322.99
NJ2220ENU2220ENUP2220E100180464.92
N322ENJ322ENU322ENUP322E1102405010.7
N224ENJ224ENU224ENUP224E120215406.02
NJ2324ENU2324ENUP2324E1202608623.8
N228ENJ228ENU228ENUP228E14025042

16.8


BoundaryMass (KG)Bearing NumbersBasicLimited Speed
Dimenssion (mm)Load Ratings(KN)(rpm)
dDBapproxTypeCrCorGreaseOil
1535110.05N20212.710.42000022000
35110.05NJ20212.710.42000022000
35110.05NU20212.710.42000022000
1740120.06N20317.614.61000018000
40120.06NJ20314.512.81800018000
2047140.109N20416.613.91700020000
47140.111NJ20416.613.91700020000
47140.111NU20416.613.91700020000
52150.149N30423.119.21400017000
52150.153NJ30423.119.21400017000
52150.153NU30423.119.21400017000
2552150.134N20518.8171400016000
52150.137NJ20518.8171400017000
52180.17NJ2205V35.329.41200025000
52150.137NU20518.8171400016000
62170.235N30531.527.71200014000
62

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