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Company name: Koyo Bearings Deutschland GmbH
Country: Germany
Address: Werkstrasse 5, Halle-Westfalen
Phone: +49 (0)52 017 070
Type: Office & Production Koyo Needle Roller bearings

Profile

Company name: Koyo Bearings Deutschland GmbH
Managing Director: Mr. Hiroyuki Endo & Mr. Yukihiko Tanaka

Address

Address: Werkstrasse 5
Postal code: D 33790
City: Halle-Westfalen
Country: Germany
Phone: +49 (0)52 017 070
Fax: +49 (0)52 017 07416
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Info

Main Business Activities: Production of needle roller bearings
Quality management & assurance: ISO/TS 16949 v 2009
ISO 14001 v 2004
ISO 9001 v 2008
ILO OSH 2001
OHSAS 18001 v 2007
Total size: 55.000 m2
Office: 42.000 m2 production area/ 9.550 m2 warehouse/3.450 m2 office
Number of employees: 642
Sales:  

HISTORY

YEAR FACTS
1867 Dürkoppwerke founded in Bielefeld
1941 Acquisition of the Künsebeck land area
1943 Completion of the manufacturing buildings
1960 Transferred bearings production from Bielefeld to Künsebeck
1962 FAG acquired Dürkopp-Werke AG
1993 Ingersoll Rand acquired the plant
2001 Transfer of solid race business to Olomouc
2003 Acquisition of Torrington by Timken
2010 Künsebeck plant became part of JTEKT Corporation

 

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.

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