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GLYNWED AB is, together with their sister company FRIATEC AG, a leading manufacturer of ceramic products. Besides their wide spectra of ceramic products for engineering applications, high temperature ceramics and electro ceramics, GLYNWED has had a co-operation with the German company CEROBEAR GmbH for many years. Cerobear develops, constructs and produces ceramic ball and roller bearings for extreme applications.
Cerobear ceramic bearings make it possible to apply roller bearings in a variety of circumstances. Cerobear ceramic bearings offer new application opportunities, especially in extreme technical domains, which have been inaccessible up until now.
The inner and outer rings of the bearings are made of high-performance ceramics such as silicon nitride or zirconium oxide. The rolling elements are also made of silicon nitride. For the production of cages and gaskets a variety of materials, such as PEEK or PI, are available.
Cerobear ceramic bearings set themselves apart through the following characteristics:
High corrosion resistance
Qualified for extreme temperatures
Qualified for dry running conditions
Low weight
Absolutely non-magnetic
Qualified for media- and starved lubrication
High stiffness
High reliability
Low abrasion
Low operating costs
Cerobear ceramic bearings are manufactured in ISO- measurements or customised designs according to your needs.
Some examples of applications:
Hydrogen high pressure pumps run Cerobear ceramic-cylindrical rollers for the space shuttle under the following parameters:
Performance: 75,000hp
Speed: 36,200rpm
Pitch-ø: 106mm
Characteristic speed: 3,8 Mio. mm x min -1
Lubrication: H2-fluidic ( -253
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7334C KOYO | 170 | 360 | 72 |
| 7334B KOYO | 170 | 360 | 72 |