Gold Member Since 2015
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Changzhou Renben Bearing Factory

Needle Roller Bearings Nk31.75*44.45*31.75, Needle Roller Bearings Nk32/20, Needle Bearing Rna49/28 manufacturer / supplier in China, offering Needle Roller Bearings Without Inner Ring Nk31.75*44.45*31.75, Sprag Freewheel Cage One Way Clutch K, Radial Needle Roller and Cage Assemblies K16*24*20 and so on.

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Supplier Homepage Product needle roller bearings Solid collar Needle roller bearings Needle Roller Bearings Without Inner Ring Nk31.75*44.45*31.75

Needle Roller Bearings Without Inner Ring Nk31.75*44.45*31.75

FOB Price: US $0.56-6 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $0.56-6/ Piece
Get Latest Price
Port: Shanghai, China
Production Capacity: 1000, 000PCS/Month
Payment Terms: T/T, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: NK31.75*44.45*31.75
  • Style: Without Inner Ring
  • Inner Diameter: 31.76mm
  • Height: 31.75mm
  • Original Code: Non
  • Rolling Body: Roller Bearings
  • Spherical: Non-Aligning Bearings
  • Trademark: R&B
  • Specification: SGS
  • HS Code: 84824000
  • Load Direction: Radial Bearing
  • Material: Bearing Steel
  • Outer Diameter: 44.45mm
  • Weight: 40g
  • Application: Gear Box, Printing Machinery, Other Machinery
  • The Number of Rows: Single
  • Separated: Unseparated
  • Transport Package: Industrial Packing
  • Origin: Jiangsu, China
Product Description
Needle bearings have a large surface area that is in contact with the bearing outer surfaces. Additionally there is less added clearance so they are much more compact. The typical structure consists of a needle cage which orients and contains the needle rollers, the needle rollers themselves, and an outer race and sometimes housing itself. Radial needle bearings are cylindrical and use rollers parallel to the axis of the shaft. Thrust needle bearings are flat and use a radial pattern of needles. Full compliment bearings have solid inner and outer rings and rib-guided cylindrical rollers.
 
Main products
Light series needle roller bearings (NK,NKI,NKS,NKIS) 
Heavy series needle roller bearings (NA,RNA,RNA-RS,RNA-2RS) 
Curve needle rollers (KR,CF,CR,CNBH) 
Strut needle rollers (NART,NUTR,CCYR,STO,RSTO,NAST-ZZ) 
Not obstructs side needle roller bearings(NAO,RNAO) 
Needle roller-thrust ball bearings (NX,NX-Z,NKX,NKX-Z) 
Needle roller-thrust cylindrical bearings (NKXR,NKXR-Z) 
Radial needle roller-thrust cylindrical needle roller bearings (ZARN) 
Thrust-cylindrical needle roller bearings (811,812,WS,GS) 
Needle rollers and cages (K,KR,KS,KBK,KZK) 
Drawn cup needle roller clutches and assemblies (HF,HFL)
 
Specifications
Solid collor needle roller bearing NA NKI series 
1.Material:GCr15,high precision,long life 
2.Best price and Welcome OEM orders
Solid collor needle roller bearing with inner ring NA NKI series
 
We supply all size NKI NA series needle bearing as best price on good quality.


The needle roller bearing without inner ring is suitbale for the parts of which the radial size is limited.
Beacuse of no inner ring,the surface os shaft journal fitted with it is acted directly as rolling surface.It is requested that the surface hardness be no less than HRC60,surface roughness,no more tahn 0.63um.This kind of bearing does not limmit the axial shift and housing and has high limiting rotational speed.

The inner ring has no shoulder in this bearing.For this purpose,the inner ring,outer ring,copleteset of needles and cage can be mounted respectively.This bearing does not limit the axial shift os shaft and outer housing.Since the cage separates the needles so as to reduce friction.It can be used for the partswith high rotational speed.


Model RNAS,NK needle roller bearings withour inner ring
Model NA,NKI needle roller bearings with inner ring

 


Shaft
Diameter

Bearing Designation

Mass

Approx

BoundaryDimensions

BasicLoadRating

Limiting Speed

CurrentCode

OriginalCode
FwDC
Dynamic

Static
Oil
mmgmmNrpm
5NK5/10TN 2.9510102100140036780
NK05/08  5108   
NK05/10TN-OH  510122350192039000
NK05/12TN 3.7510123000265039000
6NK06/10  612102600220037000
NK06/10TN  612102600220037000
NK06/12TN 5.7612123350315037000
RNA6X13X8TN  6138   
7NK07/10 6.9714102850265034000
NK07/12 8.2714123650360034000
7.8RNA7.8169  7.8169   
8NK8/12TN 8.3815123950410032000
NK08/12 8.7815123950410032000
NK08/16 12815165100580032000
NK08/16TN  815165100580032000
RNA8X19X9  8199   
RN8X14X8  8148   
RNA496  81510   
RNA8X15X10TN  81510   
9NK09/12 10.391612   
10NK10/12TN462409K101017124750530029000
 562409716.61017154860710029000
NK10/10  101710   
NK10/12  101712   
NK10/16  1017166200780029000
NK10/16TN  1017166200780029000
NKS10  1019135800600029000
12NK12/12TN64409711.81219126000640027000
 562409815.41219156400710027000
NK12/16 16.81219168200980027000
14NK14/164624900K20.8142216101001150025000
NKS14 2714251614001380024000
RNA4900462490024.41422138500900025000
RNA6900663490029.1142222128001560025000
NK14/12  142212   
NK14/20  142220128001560025000
15NK15/12644800K18.515231286001100021000
RNA152815 31.7152815136001720024000
 7948/1516.1152212820098008500
 64430218.2152512106001350017000
NK15/16 21.8152316107001270024000
NK15/20 26.7152320136001720024000
NK152312  152312   
NK152512  152512   
16NK16/16 20.8162416113001390023000
NK16/2062470123.9162420104001680023000
RNA4901462490116.61624136400890015500
RNA6901663490128.7162422140001860015500
NKS16 30162816149001500020000
NKl62516  162516   
NKl62616  162616   
17NK17/16644903K21.517251690001350014000
NK17/20RNAl7252030172520150002000023000
18NK18/20 30.5182620155001980022000
NK18/16  182616125001620022000
19NK19/16  192716130001700022000
20NK20/1664480225.7202816105001380021000
NK20/2062480229.3202820115002180021000
NK202616 20.820261696001080021000
NK202620  20262096001080021000
NKS20 46.8203220200002300020000
NK203312SX 29.1203312130001800011000
 662410124.3202825130001749011000
RNA4902462490220.5202813110001290012000
RNA6902663490235.4202823108001280012000
NK20/16  203216130002500012000
RNA5902  202818   
21NK21/12  212912   
NK21/16  212916135001870021000
NK21/20  212920   
22NK22/16NK22301629.2223016135001800011500
 NK22351634.6223516186002080011500
NKS22 60.2223520215002500017000
RNA4903464490320.7223013120001680016300
RNA5903  223018   
RNA6903663490339.8223023140001990016300
 62470353223525245002800014100
 634704L42.5223030177002700016500
 64470427.4222816105001500016500
 NK22351649.4223516186002080016500
NK22/20  223020   
23 634704KA37.5233030186002900015000
24NK24/16  243216   
NK24X33.5X7.5  2433.57.5   
25NK25/1662490430253316129002040015000
NK25/2064480438.4253320168002850015000
RNA4904464490450.8253717119001650015000
RNA6904663490497.7253730260004300015000
NKS25 65253820258003100016300
 624704100.1253525149002240016500
NK25/30644804K632533301880030500165000
NK253326  253326   
NK253422  253422   
NK253425  253425   
NK253820  253820   
NK253825  253825   
NK254517.5  254517.5   
26NK26/16 30263416150002300016300
NK26/20 40263420170003000016300
27NK27X40X25  274025   
28RNA283833 99.8283833330005700012000
 F383399.8283833330005700012000
NKS28 80284220259003350015000
NK28/20 53283720220003400016500
NK28/30  283730330005700012000
RNA69/2263549/22 283930   
29NK29/20  293820219003400015000
NK29/30  293830325005700015000
30NK30/2064480557.9304020206003200015000
NK30/30 95304030315005000015000
RNA4905462490557304217236003150014000
RNA69056634905106.5304230390005900014000
 62490568304220200003200015000
NK304013  304013   
NK304430  304430   
NK304630  304630   
NK305017  305017   
NKS30  304517320004000014000
RNA305225  305225   
30.5NK30.5X50X16  30.55016   
NK30.5X50X17  30.55017   
31NK31.75X44.45X31.75  31.7544.4522   
32NK32/2062470575.4324220226003350015000
RNA49/2846449/28K80324517174003000013000
NAS32 100324722310004000013000
RNA69/28 125324530395006130013000
 64490642323811107503050012000
 644706193325035405006300012000
NKS32 100324722310004000012000
NK32/30  324230335006000012000
RNA324527  324527   
34NK345034  345034   
NK345035  345035   
35NK35/2064480670354520138002690012000
RNA4906462490662.8354717170003050012000
RNA69066634906116354730350006700012000
 644907161355151435007100012000
NK354512  354512   
NK354830  354830   
NK355034  355034   
NK355236  355236   
RNA354527  354527   
RNA5906 108354723   
RNA355730  355730   
RNA355734  355734   
36NK365225  365225   
  62470615437522228500455009000
37NK37/20  374720249004350012000
NK37/30  374730370007300012000
38NK38/20  384820255004500012000
NK38/30  384830380007600012000
40NK40/20 78.9405020265004300011000
NK40/30 120405030374907900011000
NK404815  404815   
NK405530  405530   
NKS40  405522380005400011000
RNA49/32  405220   
RNA69/3266349/3214740523625500685008500
RNA405422  405422   
RNA40X55X20  405520   
42NK42/20 83425220239004500010000
NK42/30 125425230270004900010000
RNA4907462490799.342552019800415008700
RNA5907  425527   
RNA6907663490716042553626000605008700
 64470814842652231500510008700
RNA425622  425622   
43NK43/20 84435320257007490010000
NK43/30 126435330390007490010000
45NK45/2064480881.545552019800465007650
 62470875.345552220500496007650
 46449/388045582021600505007650
NK45/30  45553041000880007650
NKS45  45602240500600007650
RNA456227K  456227   
47NK47/20  47572028500560007650
NK47/30  47573043000940007650
48RNA4908464490813248622231000630008120
RNA5908 22548623031000630008120
RNA69086634908238486240640001120008120
50RNA50/25 16750622528000670008140
RNA50/35 23650623532000701008140
 624708K32850653440000620008140
NK50/14  50641432000701008140
NK50/15  50651540000620008140
NK50/27YA644810257506727   
NKS50  506522   
NK506825  506825   
52RNA4909462490916352682237000695007600
RNA5909 232526830   
RNA69096634909308526840615001235007600
55NK55/25 16755682530600608007600
 62470921055682536000680007600
NK55/30  55683048000630007600
NK55/35  55683555000740007600
NKS55  55722245000740007600
58RNA4910464491016158722241000720007490
RNA69106634910296587240680001350007490
60NK60/25 15460722539000860007000
NK60/35  607235560001300007000
NKS60  60802863000980007000
63RNA4911464491124163802550600965807000
RNA69116634911430638045825601720007000
65NK65/25  65782544000980007000
NK65/35  657835590001420007000
NKS65  658528670001080007000
68RNA4912464491225768852552800910507000
RNA5912RNA5912408688534   
RNA69126634912436688545885001860007000
NK68/25  68822543500890007000
70NK70/25  70852544500920006500
NK70/35  708535630001440006500
72RNA49134644913300729025574901105006500
RNA69136634913571729045876001945006500
75NK75/25 315759225540001040006000
NK75/35 445759235770001620006000
80RNA491446449144008010030790001540005500
RNA6914663491481580100541210002630005500
NK80/25  809525   
NK80/35  809535   
85RNA491546449154728510530820001580005500
RNA5915 7458510540   
RNA6915663491592385105541280002720005500
NK85/25  8510525690001230005500
NK85/35  8510535980001930005500
90RNA491646449164969011030810001705005000
RNA6916663491697890110541305002806005000
NK90/35  9011030103000208005000
95NK95/26  9511526730001370004800
NK95/36  95115361070002230004800
96 SG-4214969611529730001370004600
100RNA4917464491760810012035980002070004600
RNA691766349171112100120631610003370004600
NK100/30  10012030   
NK100/36  100120361110002370004600
105RNA4918464491871310512535985002390004000
RNA69186634918125010512563174000380004000
NK105/26  10512526780001550004000
NK105/36  105125361140002500004000
110RNA49194644919685110130351120002450003870
RNA691966349191325110130631960004000003870
NK110/30  1101303098000210004200
NK110/40  11013040127000290004200
115RNA492046249201006115140401200002640003700
NK115/12  11514012   
NK115/15  11514015   
120NK120/40  12014040   
125RNA492266349221200125150401240002700003300
135RNA492446449241760135165451740003860002900
160RNA492846449282350160190502000004600002900
TN = plastic safety frame, allowing operating temperature: 120 ºC continuous, 150 ºC temporarily, 180 ºC short-lasting. 1) For grease lubrication, the allowable value tabulated values of 60%. + There are stalls circle, no oil holes and grooves, oil holes and grooves as when required, the need to increase ASR1 on the bearing code.
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