en

Media & Downloads

Case studies

Case studies

Practical realization of the world's first ceramic bearing in 1984 Reliable, corrosive-resistant and suitable for use in solutions

"Are there any bearings that can be used in water?" From this single question, JTEKT began developing a corrosion-resistant bearing. As a result, we commercialized the world's first ceramic bearing in 1984. This case study introduces the beginning of Koyo's reputation as a major ceramic bearing supplier.


Client Profile:
Major heavy industry manufacturers, chemical manufacturers, research institutions and many more

80% less uneven rotation! (compared with a planetary gear) A precision reduction gear adopting Koyo bearing technology

A printing machinery manufacturer facing the dilemma of poor printing quality due to uneven rotation of the feed drum. JTEKT's proposal of a traction drive resulted in accomplishment of a precise gear reduction not possible with a planetary gear. If you face issues of uneven rotation, vibration or noise, this case study is a must-read!


Client Profile:
Printing machinery manufacturer

A bearing achieving both size reduction and higher capacity (longer life) Contributing to the further enhancement of robot performance!

In order to manufacture robot parts which are compact, lightweight and long-life, the bearing, which is one element part, also needs to be of ultra-high quality offering both a compact size and high capacity. JTEKT applied itself to this challenge and contributed to the development of new robot parts.


Client Profile:
Robot manufacturing

Bearing 3D
FAQ

What is a tapered roller bearing?

A tapered roller bearing is a bearing in which tapered rollers (truncated conical rollers) are inserted between the cup (outer ring) and cone (inner ring). The rollers are guided by the cone back face rib.

They have high radial and axial (thrust) load capacities at low to intermediate speeds. Taper roller bearings are available in single-row, two-row and four-row designs. With single-row bearings, the thrust load capacity is about 60% of the radial capacity. Double-row bearings have a greater radial load capacity and can handle thrust loads from both directions. The rollers can be configured so that the contact lines to the races converge or diverge towards the axis of rotation. Diverging double-row bearings increase the rigidity of the shaft mounting, but converging bearings do not. Other configurations for double-row bearings feature a single outer ring and two inner rings, or two outer rings and a single inner ring. Four-row tapered roller bearings consist of four rows of alternating converging and diverging rollers.


For more information please click here “Products”

You may communicate us your personal data in the frame of using our website. JTEKT Europe Bearings B.V. and its affiliates undertake to comply with the European General Data Protection Regulation (GDPR May 25th 2018) and shall process your data in compliance with GDPR. In case you would like to proceed with your rights (refusal, information, access, erasure, restriction, portability), you can send a request to dpo.jeo@jtekt.eu

I understand