NKIB 5902 Bearings
NKIB 5902 Bearings
NKIB 5901 Bearings
NKIB 5901 Bearings

NKIA 5902 Bearings

NKIA 5902 Bearings
NKIA 5902 Bearings

NKIA 5902 Combined needle roller / angular contact ball bearing for axial loads in one direction

Technical Specification of NKIA 5902 Bearings

Dimensions of NKIA 5902 Bearings

15 mm
Bore diameter
28 mm
Outside diameter
18 mm
20 mm
Diameter of inner ring raceway
min.0.3 mm
Chamfer dimension

Abutment Dimensions of NKIA 5902 Bearings

min.17 mm
Diameter of shaft abutment
max.26 mm
Diameter of housing abutment
max.0.3 mm
Radius of fillet


Caliculation Data of NKIA 5902 Bearings

Basic dynamic load rating, radialC
11.2 kN
Basic static load rating, radialC0
15.3 kN
Basic dynamic load rating, axialC
2.27 kN
Basic static load rating, axialC0
2.37 kN
Fatigue load limit, radialPu
1.83 kN
Fatigue load limit, axialPu
0.099 kN
Reference speed 
19 000 r/min
Limiting speed 
22 000 r/min

Mass of NKIA 5902 Bearings

0.05 lb

Product Features of NKIA 5902 Bearings

  • Aligning needle roller bearings are self-aligning and provide a compact solution in applications where space is at a premium.

  • They have a high load carrying capacity due to their large number of rollers. Their internal design, where the convex outer ring meets two concave seat rings encapsulated in a drawn sleeve, allows the bearing to accommodate initial static misalignment.

  • If the shaft can be hardened and ground, the inner ring-less bearing is the best choice for compact bearing arrangements.

  • High radial load carrying capacity

  • Adapts to static initial misalignment

  • low cross-sectional height

  • Suitable for compact bearing arrangements

Applications of NKIA 5902 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..
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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
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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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