RNAO42x57x20 Needle Roller Bearings 42×57×20mm

Model: RNAO42x57x20
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:30000 Piece/Pieces per...
Payment Terms:L/C, T/T, WUPacking:RNB OR NATURAL
Min. Order:500 Piece/PiecesDelivery Date:35days
Means of Transport:Ocean, Air

Solid Collar Needle Roller Bearings RNAO42x57x20


Demension: 42×57×20mm ,    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.

Solid Collar Needle Roller Bearings RNAO42x57x20

Because of no inner ring, this needle roller bearing is suitable for parts of which the radial size is limited.The surface of shaft journal fitted with it is acted directly as rolling surface. It is requested that the surfacehardness of shaft journal be no less than HRC60 and the surface roughness Ra value, no more than 0.63µm.This kind of bearing does not limit the axial shift of shaft and housing.

The outer ring and inner ring have no shoulder. For this purpose, 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.

Shaft DiameterBearing DesignationMass approxBoundary DimensionsBasic Load RatingLimiting Speed
FwDCECr DynamicCor StaticOil
mmgmmNrpm
5RNAO5X10X82.8510882050172027800
6RNAO6X13X8 TN5613892300188030000
7RNAO7X14X8 TN57148102250195031000
8RNAO8X15X10 TN7.881510113050392028000
10RNAO10X17X10 TN9.1101710133960450020000
12RNAO12X19X13.5 TN14121913.5155400750022000
RNAO12X22X12 TN17.91222121889508000023000
15RNAO15X23X1318.5152313196500890021100
16RNAO16X24X1319.8162413206200840021100
O RNAO16X24X2029.716242020102001480021100
RNAO16X28X1229.71628122295001050018000
17RNAO17X25X13211725132194001160018000
18O RNAO18X30X246518302424121001650017600
20RNAO20X28X1324.5202813247800960016000
O RNAO20X28X2648.120282624100802050016000
RNAO20X32X1236.620321226101001410016000
22RNAO22X35X1325.22230132692001200014000
RNAO22X35X165822351629100001550016000
25RNAO25X35X174925351729109002200015020
O RNAO25X35X2667.825352629124002500015020
RNAO25X37X1659.225371632150002090012000
RNAO25X37X3210825373232250003890012000
26RNAO26X39X135926391330876001020015020
30RNAO30X40X175930401735126002400010050
O RNAO30X40X269230402635160003200010050
RNAO30X42X1649.930421637130002320010050
O RNAO30X42X3212630423237295004700010050
35RNAO35X45X135035451340102002200010000
RNAO35X45X176035451740178002450010000
O RNAO35X45X268835452640205004000010000
RNAO35X47X167535471642204003150010000
RNAO35X47X188635471842225003500010000
O RNAO35X47X3214935473242320005500010000
37RNAO37X52X181153752184411890355008800
40RNAO40X50X17724050174515400298808800
O RNAO40X50X3415140503445251865720011000
RNAO40X55X2014440552047263004610010000
O RNAO40X55X4026840554048547008700010000
42RNAO42X57X2013242572050267204370010000
45RNAO45X55X1782.545551750108000360009000
RNAO45X62X403684562405342200850509000
50RNAO50X62X201405062205520690468607500
RNAO50X65X201625065205823200405407000
RNAO50X65X403215065405839040806007000
55RNAO55X68X201575568206022480520746500
60RNAO60X78X202536078206828500653005550
RNAO60X78X403686078406845000990005550
65RNAO65X85X303946585307337000909004900
70RNAO70X90X3048870903078400101050005100
80RNAO80X100X30527801003088520001390004890
85RNAO85X105X25449851052593486001060004900
90RNAO90X105X26323901052698425191290004900
RNAO90X110X30600901103098591001520004900
100RNAO100X120X3067110012030108500001580003100


Solid Collar Needle Roller Bearings RNAO42x57x20


Category: The Solid Collar Needle Roller Bearings

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