RPNA 35/52 Bearings
RPNA 35/52 Bearings
RPNA 25/42 Bearings
RPNA 25/42 Bearings

RPNA 30/47 Bearings

RPNA 30/47 Bearings
RPNA 30/47 Bearings

RPNA 30/47 Alignment needle roller bearings, without an inner ring

Technical Specification of RPNA 30/47 Bearings

Dimensions of RPNA 30/47 Bearings

30 mm
Diameter under rollers
47 mm
Outside diameter
20 mm
42 mm
Shoulder diameter sleeve
min.0.8 mm
Chamfer dimension sheet steel sleeve


RPNA 15/28 Bearings

Abutment Dimensions of RPNA 30/47 Bearings

min.41 mm
Smallest permissible abutment diameter housing
max.42 mm
Largest permissible abutment diameter housing
max.0.8 mm
Fillet radius


Caliculation Data of RPNA 30/47 Bearings

Basic dynamic load ratingC
22.9 kN
Basic static load ratingC0
38 kN
Fatigue load limitPu
4.8 kN
Reference speed 
13 000 r/min
Limiting speed 
15 000 r/min

Mass of RPNA 30/47 Bearings

Mass bearing
0.13 lb

Product Features of RPNA 30/47 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 RPNA 30/47 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
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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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