K 50X57X18 Bearings
K 50X57X18 Bearings
K 50X55X20 Bearings
K 50X55X20 Bearings

K 50X55X30 Bearings

K 50X55X30 Bearings
K 50X55X30 Bearings

K 50X55X30 Single row needle roller and cage assembly

Technical Specification of K 50X55X30 Bearings

K 3X5X7 TN Bearings

Dimensions of K 50X55X30 Bearings

50 mm
Diameter under rollers
55 mm
Outside diameter roller complement
30 mm
Width needle roller and cage assembly

Caliculation Data of K 50X55X30 Bearings

Basic dynamic load ratingC
37.4 kN
Basic static load ratingC0
98 kN
Fatigue load limitPu
12 kN
Reference speed 
8 500 r/min
Limiting speed 
9 500 r/min

Mass of K 50X55X30 Bearings

Mass needle roller and cage assembly
0.065 lb

Product Features of K 50X55X30 Bearings

  • Needle roller and cage assemblies are self-contained, ready-to-mount bearings without inner and outer rings.
  • In applications where the shaft and housing bore can serve as raceways, the assemblies can be used to create bearing arrangements that require minimal radial space.
  • As the clearance of the bearing arrangement is only affected by the roller sorting and the finish of shaft and housing, very precise bearing arrangements can be achieved.
  • High radial load carrying capacity
  • High stiffness
  • High precision
  • Lowest cross-sectional height among rolling bearings
  • Accommodate axial displacement in both directions

Applications of K 50X55X30 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
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Wind Turbines
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Steel Industry
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Food Processing Machinery
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Mining & Construction
Applications of Bearings
Electric motors and generators

Product classification of Needle roller bearings

FAQ of K 50X55X30 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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