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Koyo Bearings Distributor

AST Bearings is a direct distributor of Koyo bearings

AST Bearings is a certified Koyo bearings distributor, and has a fully-stocked supply directly from Koyo. Koyo offers general purpose ball bearings & roller bearings, bearings for extreme temperatures & environments, machine tools, industrial equipment and more. A full list of Koyo bearing applications can be seen here:

Koyo general purpose ball and roller bearings

  • Deep grove ball bearings
  • Angular contact ball bearings
  • Cylindrical roller bearings
  • Tapered roller bearings
  • Spherical roller bearings
  • Needle roller bearings

Koyo bearings for extreme and special environments

  • EXSEV bearings
  • Ceramic bearings
  • Ceramic balls

Koyo machine tool bearings

  • High-Precision bearings for machine tools
  • Ultra-precise angular ball bearings for machine tool spindles
  • Support bearings for precision ball screws

Koyo bearings for general industrial equipment

  • Bearings for wind power generation
  • RHR type spherical roller bearings
  • Plummer blocks
  • Axle jounal bearings of bullet train
  • High-precision aircraft bearings
  • "K" series super thin section ball bearings
  • Long life bearing series
  • Track rollers
  • Ball bearing units
  • Water pump bearings with highly reliable seal

Koyo automotive bearings and unit products

  • Engine bearings
  • Hub units
  • Chassis bearings
  • Drivetrain bearings

Koyo bearings for electric and electronic products

  • Miniature ball bearings
  • Slim series deep groove ball bearings
  • Miniature one-way clutches
  • FN bearings
  • Ball bearings with resinous pulleys
  • Insulated hybrid ceramic bearings

Koyo steel mill bearings

  • Sealed type four row tapered roller bearings for roll necks
  • Cylindrical roller bearings for the backing shafts of multi-roll mills
  • Roller bearing unit for the backing shafts of multi-roll mills
  • Bearing units with half-round outer ring
  • SC bearings for continuous casting machines
  • Driveshafts of rolling mills

Other related Koyo bearing products

  • Oil seals and O-rings
  • Bonded piston seals
  • Compact type oil seals
  • Ceramic balls


The Koyo® brand traces its roots back to the founding of the Koyo Seiko Co. in Osaka, Japan back in 1921.  In 2006, Koyo Seiko Co., Ltd. and Toyoda Machine Works, Ltd. joined forces together to create the JTEKT Corporation, the manufacturer of Koyo bearings.  As a Koyo bearings distributor in the United States, AST® Bearings stocks their products receiving them directly from the company.  Feel free to contact us about the Koyo bearing products we supply.

Next Steps...

Together with AST Bearings' value-added services and cutting edge bearing technology, you receive a guaranteed economical solution in design and application.

We are your Koyo Bearings Distributor: Contact Us

 If you have a need for any Koyo products, contact us directly. AST is a direct distributor for Koyo products and will provide you with "value beyond the part."

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Full-Line, Online Bearings Catalog

Alternatively, check out our full-line, online catalog of bearings and related products.  If you don't see what you are looking for, just ask!  AST can be your single-source supplier for all of your bearing and related product needs.

Full-Line Catalog & 3D CAD Library


Koyo® is a registered trademark of JTEKT Corporation

AST Bearings is proudly presenting our new certificates for both the NJ and CA locations: AST Bearings’ ISO 9001:2015 Certificates

To learn more about what the ISO 9001 standard is, the differences between the 2015 and 2008 versions, and how AST verifies customer satisfaction: Learn About AST Bearings’ certification to ISO 9001:2015

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