RNAV4008 Needle Roller Bearings 51.6x68x28mm

Model: RNAV4008
Place of Origin: Zhejiang,China (Mainland)
Brand Name: RNB OR NATURAL
Number of row: Single row
Type: Roller bearing
Material of race: Chrome steel
Material of Needle roller: Chrome steel
Precision: P6

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Product Description

Payment & Shipping Terms Supply Capacity
Trade Term:FOBProduction Capacity:10000 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 Full Complement Needle Roller Bearings RNAV4008


Demension: 51.6×68×28mm ,    Weight: 304g.


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.

As for the full complement needle roller bearing with inner ring, the outer ring has the oil hole. The lubricating oil can be fed in from the oil hole. The outer ring has the double shoulders. As for the full complement needle roller bearing without inner ring, since the inner ring has no shoulder and cage, the inner ring, outer ring,complete set of needles can be mounted respectively. It is s 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 surface hardness be no less than HRC60, surface roughness, no more than 0.63µm. This kind of full complement bearing, with inner ring or without inner ring, does not limit the axial shift of shaft and housing.

Since this kind of bearing has no cage, the needles rotate without correct guiding, they rub heavily against

each other and the bearing has the low limiting rotational speed.

 

RNBBearing   DesignationBoudary   DimensionsBasic   Load RatingLimiting Speed
ShaftCurrentOriginalCode   FwEwBcDynamicStatic    Oil
Diameter
mm        mm          N    rpm
15NAV4002407410215321710800298004500
17NAV4003407410317351812000170003400
20NAV4004407410420422214500296003000
25NAV4005407410525472223000346002600
30NAV4006407410630552525800469002000
35NAV4007407410735622733000599001800
40NAV4008407410840682835900670001700
45NAV4009407410945753041000740001500
50NAV4010407411050803042800889001400
55NAV40114074111559035489001090001300
60NAV40124074112609535507001160001100
65NAV401340741136510035598001260001000
70NAV40144074114701104072400155000950
75NAV40154074115751154072801800900
80NAV40164074116801254576000195000850
85NAV40174074117851304576000195000850
21.87RNAV4002408410221.87321710800298004500
24.3RNAV4003408410324.3351817900379004300
28.7RNAV4004408410428.7422228150609003900
33.5RNAV4005408410533.5472233800708003700
40.1RNAV4006408410640.1552549900965003500
45.9RNAV4007408410745.96227476001228003100
51.6RNAV4008408410851.66828499001379002700
57.4RNAV4009408410957.47530525001535002600
62.1RNAV4010408411062.18030557001660002500
69.8RNAV4011408411169.89035685002258002300
74.6RNAV4012408411274.69535754002390002100
80.3RNAV4013408411380.310035795002569001900
88RNAV401440841148811040988003549001700
93.7RNAV4015408411592.7115451018003729001600
100.3RNAV40164084116100.3125451029003735001500
104.8RNAV40174084117104.8130451038003748001400


Solid Collar Full Complement Needle Roller Bearings RNAV4008


Category: The Solid Collar Needle Roller Bearings

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