Thin section bearings
A thin section bearing keeps the same cross-section as its diameter grows: the same balls and wall thickness at 25 mm bore as at 300 mm. That saves real weight and space on a large-diameter joint — which is why robot joints, medical imaging and optical assemblies use them.
Types and variants
The distinct designs that sit under this category.
Radial type (C section)
Deep groove geometry, carrying predominantly radial load.
Angular contact type (A section)
Carries axial load in one direction plus tilting moment.
Four-point contact type (X section)
Takes radial, bidirectional axial and moment load in a single row.
Stainless and specially coated versions
For corrosive environments, vacuum and cleanroom use.
Where it is used
The applications this category most often serves.
- Robot arm and joint drives
- Medical imaging and scanning assemblies
- Optical and defence system turntables
- Aircraft and helicopter control mechanisms
- Semiconductor production equipment
What we ask when selecting
What we need in order to find the right part. You do not need all of it — we can work out the rest together.
- Cross-section size
- Bore and section are given together — in this family the section does not grow with the bore.
- Load combination
- The ratio of radial, axial and moment load picks the type outright.
- Stiffness of the surrounding parts
- A thin wall is far more sensitive to the geometry it sits on than a standard bearing.
- Running accuracy and friction torque
- On measuring and imaging assemblies this is usually the deciding figure.
Other categories in this group
Send us the designation or the dimensions — we will find the match.
A code you cannot find in the catalogue, a faded marking on an old bearing, or just the dimensions — any of the three is enough. The wrong bearing costs more than a late one.