RNAO 25X35X17 Bearings
RNAO 25X35X17 Bearings
RNA 4904.2RS Bearings
RNA 4904.2RS Bearings

RNA 6904 Bearings

RNA 6904 Bearings
RNA 6904 Bearings

RNA 6904 Single row needle roller bearing with machined rings, with flanges, without inner ring

Technical Specification of RNA 6904 Bearings

Dimensions of RNA 6904 Bearings

25 mm
Diameter under rollers
37 mm
Outside diameter
30 mm
min.0.3 mm
Chamfer dimension outer ring

Abutment Dimensions of RNA 6904 Bearings

max.35 mm
Abutment diameter housing (with flanges)
max.0.3 mm
Fillet radius

Caliculation Data of RNA 6904 Bearings

Basic dynamic load ratingC
35.2 kN
Basic static load ratingC0
53 kN
Fatigue load limitPu
6.55 kN
Reference speed 
15 000 r/min
Limiting speed 
17 000 r/min

Mass of RNA 6904 Bearings

Mass bearing

Product Features of RNA 6904 Bearings

  • low cross section
    In applications where space is at a premium, drawn cup needle roller bearings allow for miniaturization.
  • high load capacity and stiffness
    Due to the large number of rollers, drawn cup needle roller bearings have high load carrying capacity and rigidity.
  • good running performance

Applications of RNA 6904 Bearings

  • The following are examples of applications where needle roller bearings may be used:
  • Household appliances; automobiles, electrical, instruments, construction machinery, railroad vehicles, agricultural machinery, etc..
Applications of W 618/0.6 Bearings
Applications of Bearings
Wind Turbines
Applications of Bearings
Steel Industry
Applications of Bearings
Applications of Bearings
Food Processing Machinery
Applications of Bearings
Applications of Bearings
Mining & Construction
Applications of Bearings
Electric motors and generators

Product classification of Needle roller bearings


  • Ball bearings are ideal for high-speed rotation, while roller bearings are more suited for high loads.
  • Because cylindrical roller bearings have separable inner and outer rings, they generally do not come with seals (open specification). As such, please apply seals or other protection around the equipment mounting.
  • EW Series bearings are small and utilize a pressed cage, making them suitable for standard operating conditions. ET Series bearings use a polyamide-resin cage suited for high temperatures. Finally, EM Series bearings have machined cages for use in harsh conditions such as gearboxes or vibrating machinery or in applications where the bearing must be quiet, such as in mid-to-large size motors.

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