RNA4904 RS Needle roller bearings 25x37x17mm

Model: RNA4904 RS
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

Seal Ring Needle Roller Bearings RNA4904 RS


Demension: 25×37×17mm ,    Weight: 56g.

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.

Seal Ring Needle Roller Bearings RNA4904 RS

Including the models of RNA...RS, RNA...2RS, NK...RS, NK...2RS; NA...RS, NA...2RS; NKI...RS, NKI...2RS.

The seal ring needle roller with inner ring or without inner ring is the solid collar needle roller bearing

equipped with single side or double side synthetic rubber seal ring to ensure long-term lubricating function

  RNBBearing   DesignationBoudary DimensionsBasic Load RatingLimiting Speed
 ShaftRNA 49..RSRNA 49..2RSFWDCrSDynamicStatic      Oil
Diameter
   mm      mmMin         N      rpm
   14RNA4900 RSRNA4900.2RS1422130.3  68006900     13000
   16RNA4901 RSRNA4901.2RS1624130.3  76008300     12000
   20RNA4902 RSRNA4902.2RS2028130.3  860010300     10000
   22RNA4903 RSRNA4903.2RS2230130.3  880011000     9000
   25RNA4904 RSRNA4904.2RS2537170.3 1730019900     7500
   30RNA4905 RSRNA4905.2RS3042170.3 1930024200     6500
   35RNA4906 RSRNA4906.2RS3547170.3 2110028500     5500
   42RNA4907 RSRNA4907.2RS4255200.6 2650039500     4800
   48RNA4908 RSRNA4908.2RS4862220.6 3600053000     4200
   52RNA4909 RSRNA4909.2RS5268220.6 3800059000     3900
   58RNA4910 RSRNA4910.2RS5872220.6 4000064000     3500


Seal Ring Needle Roller Bearings RNA4904 RS


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