NKI28/20 Needle Roller Bearings 28×45×20mm

Model: NKI28/20
Place of Origin: Zhejiang,China (Mainland)
Brand Name: RNB OR NATURAL
Number of row: Single row
Type: Roller bearing
Material of race: ST14
Material of Needle roller: Chrome steel
Precision: P6

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Product Description

Payment & Shipping Terms Supply Capacity
Trade Term:FOBProduction Capacity:50000 Piece/Pieces per...
Payment Terms:L/C, T/T, WUPacking:RNB OR NATURAL
Min. Order:1000 Piece/PiecesDelivery Date:35days
Means of Transport:Ocean, Air

Solid Collar Needle Roller Bearings NKI28/20


Demension: 28×45×20mm ,    Weight: 132g.

SHAPE LOCATION TOLERANCE SHOULD BE TO CURRENT STANDARD;

The solid collar needle roller bearing has compact structure, small radial size and large load carrying capacity. It is suitable for the parts of which the radial overall size is limited. It is also wide applied to the situation where the shaft or housing has the swinging motion. In general, the needle roller bearing only withstands the radial load, not the axial load. When the shaft has axial load, it can be used in combination with other bearings. However, it does not limit the axial shift of shaft or housing. The limiting rotational speed of needle roller bearing is lower. In high rotational speed of main machine, the needle roller bearing with cage shall be chosen as far as possible. In compassion with other types of needle roller bearings, under the situation of same radial size, the needle roller bearing has the large load carrying capacity and high rigidity but has high friction torque.

This kind of bearing has many series with different structure and size. It is requested that the hardness, processing accuracy and surface roughness of shaft journal surface and rolling surface of outer housing be same as those of the collar of bearing. As for the needle roller with G2 class, the diameter varies within 2µm in group. Except the full complement needle roller bearings, they have the rigid cages, which can correctly guide the parallel axis line of needle roller. The needle roller bearing without inner ring is suitable for the parts of which the radial size is limited. Because of no inner ring, the surface of shaft journal fitted with it is acted directly as rolling surface. It is    rquested that the surface hardness be no less than HRC60, surface roughness, no more than 0.63µm. This kind of bearing does not limit the axial shift of shaft 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, complete set of needles and cage can be mounted respectively. This bearing does not limit the axial shift of shaft and outer housing. Since the cage separates the needles so as to reduce friction. It can be used for the parts with high rotational speed.

RNBBearing   DesignationMass ApproxBoudary   DimensionsBasic Load   RatingLimiting Speed
Shaft DiameterStructuredFwDCDynamicStaticOil
mmNKINKISNA49NA69gmmNrpm
8-NKIS 8--46814251612401130021500
9NKI 9/12---14.691219126200700221700
10NKI10/16---27.31014221698081050019650
--NA4900-21101422138006900023700
-
-NA690038.41014222282811161223700
12NKI12/20---3912162420140001840021000
---NA690144.512162422116471705220000
-NKIS12--5812183016160001700020000
15NKI15/16---381519271688471285319100
NKI15/20---45.715192720123471905319100
--NA4902-32152028136447905318800
---NA690261.615202823131002090018800
-NKIS15--9015223520235002400017000
17NKI17/16---41.417212916130001820020000
NKI17/20---52.317212920171002500021000
--NA4903-32.81722301370101001017000
---NA690368.217223023144002490017000
20NKI20/16---48.520243216108001700016700
--NA4904-70.220253717119121659416200
-NKIS20-NA690411920284220265003550014000
22NKI22/16---5022253416102001534016200
--NA49/22-7622283917129961917514360
---NA69/2213022283930213753575014360
25NKI25/20---10125293820219002400014000
NKI25/30---11525293830315005600014000
--NA4905-7625304217134522047514000
---NA690513825304230193003175014000
-NKIS25--16025324722320005500012500
28NKI28/20---13228324520231003750011400
NKI28/30---16228324530325004200012500
--NA49/28-90.728324517139002010012500
---NA69/2817028324530224003685012500
30NKI30/20---14530354520240003200012000
NKI30/30---17130354530290003600011000
-NKIS30--18430375222310003900012000
--NA4906-10130354717250003400011000
---NA690619230354730405006300011000
32NKI32/20---10132374720138512690012000
NKI32/30---12232374730180004200012000
--NA49/32-15032405220190003260011000
---NA69/3227232405236255006850011000
35NKI35/20---13935405020210004100011000
NKI35/30---16535405030222005135011000
--NA4907-15135425520198004150011000
---NA690730135425536260006050011000
-NKIS35--2103543582233000560009500
38NKI38/20---13638435320270004900011000
NKI38/30---20738435330380006900011000
40NKI40/20---12440455520220004800011000
NKI40/30---18440455530350008600011000
-NKIS40--2814050652239000650009000
--NA4908-1234048622231036638739000
---NA690840140486240640001120009000
42NKI42/20---1384247572026000525009500
NKI42/30---2224247573034000690009000
45NKI45/25---2184550622536000700009000
NKI45/35---28945506235415001020009000
--NA4909-2604550682237000695009000
---NA690947945506840615001235009000
-NKIS45--3064555722243000710007500
50NKI50/25---2625055682532000780007890
NKI50/35---3505055683545000820007000
--NA4910-2645058722241000720007000
---NA691045750587240680001350007000
-NKIS50--5105060802860000950007000
55NKI55/25---2805560722542000820006500
NKI55/35---35755607235480001268006500
--NA4911-3865563802550600965806500
---NA691176055638045825601720006500
-NKIS55--5585565852849000960006500
60NKI60/25---3886068822535500850006500
NKI60/35---55360688235580001350006000
--NA4912-4126068852552800110506000
---NA691279860688545885001860006000
-NKIS60--55060709028650001100006000
65NKI65/25---4676573902545000890006000
NKI65/35---64965739035650001110006000
--NA4913-43565729025575001105006000
---NA691382165729045876001945006000
-NKIS65--64165759528690001400006000
70NKI70/25---52170809525560001250005500
NKI70/35---73770809535750001500005500
--NA4914-712708010030790001540005500
---NA691413627080100541210002630005500
-NKIS70--865708010028750001330005500
75--NA4915-765758510530820001580005500
---NA691514297585105541280002720005500
80--NA4916-870809011030810001705005500
---NA691615108090110541305002806005000
85--NA4917-125085100120351110002370004600
---NA6917220085100120631660004000004600
90--NA4918-131290105125351140002500004400
---NA6918231090105125631720004250004400
95--NA4919-137195110130351160002600004200
---NA6919250095110130631740004400004200
100--NA4920-1900100115140401200002740004000
---NA69203170100115140711900005200004000
120--NA4922-2070110125150401320002900003700
---NA6922108011012014030940002160003900
130--NA4924-2860120135165451810003900003400
---NA4824117012013015030990002390003600
140--NA4926-3900130150180502030004700003100
---NA48261810130145165351180003100003200
--NA4928-4150140165190502090005000002900
---NA48281920140150175351200003250003000


Solid Collar Needle Roller Bearings NKI28/20


Category: Drawn Cup Needle Roller Bearings

Related Category: Without Cage Needle roller Bearings  The Solid Collar Needle Roller Bearings  Thrust Needle Roller Bearing  Curve Roller Bearings  The Needle Roller And Cage Assembly