• Bearings_new.jpg

Nachi-Fujikoshi bearings business started out by using the superior materials made by the company and by applying expertise in cutting and heat treatment acquired from our experience with cutting-tool manufacture. As a result, you get high speed and high precision in bearings that are durable and compact. Benefiting from our continually advancing technology, these parts are at work in automobiles, industrial machinery, and equipment in various other sectors. Everywhere, Nachi-Fujikoshi bearings contribute to better reliability.


  • Large radial load capacity.
  • Suitable for high-speed applications. Low friction between rollers and flanges.










  • Larger load capacity than single-row cylindrical roller bearings.
  • Used for machine tool spindles etc.







  • A single-row Tapered roller bearing can support a combined radial and axial load.
  • Used as a combination or a double-row.










  • Two single-row cups end one double cone; one double cup and two single-row cones.







  • The spherical raceway of outer rings are manufactured and assembled focusing to the center of bearings. Barrel type rollers and cages are assembled with inner rings.
  • NACHI Spherical Roller Bearings are suitable for high axial , impulse and heavy load applications such as paper manufacturing, rolling and other large size machineries.
  • Spherical Roller Bearings are particularly suitable for applications where misalignment can arise from error in mounting or from shaft deflection.
  • ACHI Spherical Roller Bearings are manufactured in a number of design and material configurations depending on the type application and size of the bearing.


Aligning Angle
Maximum permissible misalignment angle is about 2º under general service conditions. If the aligning advantages of this bearing type are to be realized, care must be taken to provide clearance for parts in the surrounding structure.
Minimum axial load
To prevent damage caused by sliding motion between the rollers and raceway, spherical roller thrust bearings must be subjected to a load more than the minimum load, Fa min.
Because there are many sliding surfaces in E type Spherical Roller Thrust Bearings (cage-to-guide-sleeve and roller-ends-ti-rib), oil lubricant (not grease) should be applied.
The safety-factor "So" must be over 4.











Go to top