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Cylindrical Roller Bearing Fix Outer Flanged Loose Inner 300 Series

  • Fix Outer Flanged Loose Inner.
  • 300 Series.

About Cylindrical Roller Bearing

  • Cylindrical roller bearings feature high radial load capacity because the rollers and raceway are in linear contact.
  • These bearings are suitable for applications that involve heavy radial and impact loading.
  • They are also appropriate for high-speed applications in that they can be machined very accurately due to their structure.
  • Having a separable inner ring or outer ring, these bearings can be mounted and dismounted easily.
  • The geometry allows for accurate machining to precision grade quality and uses at high speeds.
  • The inner or outer rings can be separated, simplifying mounting and removal of the bearing.

Single-row Cylindrical Roller Bearings

  • The NU and N types exhibit their best performance when used as free side bearings since they adjust to the shaft's axial movement, to a certain extent, relative to the housing position.
  • The NJ and NF types carry axial load in one direction, while the NUP and NH types can carry a certain degree of axial load in both directions.
  • Type R cylindrical roller bearings feature enhanced load rating compared with standard series, though both have equal dimensions.
  • This is because type R bearings have a different internal design.
  • They are identified by supplementary code "R".

Main Applications

  • Automotive: Internal combustion engines transmissions, and cargo transportation
  • Electrical: Large and medium sizes motors, traction motors, and generators
  • Industrial: Gearboxes and machine tool spindles, steel mills


  • AIMS SKU A0153832
  • Brand Koyo
  • Model Number NJ304/KOYO
  • Bore Diameter x Outer Diameter x Width (mm) 20 x 52 x 15
  • Boundary Dimension (mm) r min. 1.1
  • Outside Diameter D (mm) 52
  • Boundary Dimension (mm) r1 min. 0.6
  • Bore Diameter d (mm) 20
  • Boundary Dimension (mm) Fw 27.5
  • Bearing Width B (mm) 15
  • Type Cylindrical Roller Bearings
  • Series 300 Series
SKU: A0153832

Koyo NJ304 Cylindrical Roller Bearing 20 x 52 x 15mm Fix Outer Flanged Loose Inner

Cylindrical Bearing Fix Outer Flanged Inner 300 Series


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