HK 0812.2RS Bearings
HK 0812.2RS Bearings
HK 0812 RS Bearings
HK 0812 RS Bearings

BK 0509 Bearings

BK 0509 Bearings
BK 0509 Bearings

BK 0509 Drawn cup needle roller bearing with a closed end

Technical Specification of BK 0509 Bearings

Dimensions of BK 0509 Bearings

5 mm
Diameter under rollers
9 mm
Outside diameter
9 mm
min.7.4 mm
Depth of the drawn cup BK
min.0.4 mm
Chamfer dimension drawn cup (outer ring)

Caliculation Data of BK 0509 Bearings

Basic dynamic load ratingC
2.38 kN
Basic static load ratingC0
2.08 kN
Fatigue load limitPu
0.22 kN
Reference speed 
22 000 r/min
Limiting speed 
24 000 r/min

Mass of BK 0509 Bearings

Mass bearing
0.0021 kg

Product Features of BK 0509 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 BK 0509 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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