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BY INDUSTRY

Steel

It is difficult to imagine a world without steel and iron, so used have we grown to its everyday presence in our lives.

It is difficult to imagine a world without steel and iron, so used have we grown to its everyday presence in our lives.

The global steel consumption has risen significantly in the course of the 20th century, in highly developed, emerging and developing economies likewise. The steel consumption of a country has been a barometer for measuring the dynamics of economic progress. JTEKT is making its contribution to this immense industry by manufacturing a large range of bearings which are being used in the steel manufacturing plants.

Experience and capabilities

Bearings for steel manufacturing plants are bound to operate in very harsh environments including extreme temperatures, contamination and operation under very diverse speeds. Thanks to our ample technological knowledge gained through intensive R&D we are capable of manufacturing a complete line of products for a variety of steel making applications such as roll necks, pinion stand, screw down and drive shafts. Koyo advanced bearings are highly recommended for those environments. Their excellent performance and high reliability considerably prolong the service life and reduce maintenance frequency.

Products:

  • RHR type spherical roller bearings
  • HSC bearing units
  • SC bearings
  • Four row cylindrical roller bearings
  • Sealed type four row tapered roller bearings
  • Cylindrical roller bearings for backing shafts
  • Sealed type double row tapered roller bearings
  • Backup roll units
  • Hybrid ceramic ball bearings
  • Bearings for drive shafts
Bearing 3D
FAQ

What is an angular contact ball bearing?

An angular contact ball bearing uses axially asymmetric races. An axial load passes in a straight line through the bearing, whereas a radial load takes an oblique path that tends to want to separate the races axially. So the angle of contact on the inner race is the same as that on the outer race. Angular contact bearings better support "combined loads" (loading in both the radial and axial directions) and the contact angle of the bearing should be matched to the relative proportions of each. The larger the contact angle (typically in the range 10 to 45 degrees), the higher the axial load supported, but the lower the radial load. In high speed applications, such as turbines, jet engines, and dentistry equipment, the centrifugal forces generated by the balls changes the contact angle at the inner and outer race. Ceramics such as silicon nitride are now regularly used in such applications due to their low density (40% of steel). These materials significantly reduce centrifugal force and function well in high temperature environments. They also tend to wear in a similar way to bearing steel—rather than cracking or shattering like glass or porcelain.

Most bicycles use angular-contact bearings in the headsets because the forces on these bearings are in both the radial and axial direction.

For more information please click here “Products”

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