SKF
Ultra-Slim Thin Section Bearings
SKF Ultra-Slim thin section bearings take the space and weight saving concept to the extreme, offering the thinnest possible cross-sections for a given bore diameter. These bearings are manufactured with exceptionally thin rings and miniature balls or rollers, making them ideal for applications where every gram and cubic millimetre counts — such as in aerospace gimbals, compact optical mounts, endoscopic surgical robots, and miniaturised satellites. Despite the delicate proportions, SKF maintains high precision (ABEC 5-7) and material quality to deliver adequate load capacity for their intended lightweight duties. Ultra-Slim bearings are available in various contact configurations similar to Reali-Slim but with even thinner profiles. Custom engineering to meet specific envelope and load requirements is a core SKF capability in this product line.
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Minimum Cross-Section
Thinnest rings in the thin section family.
Ultra-Lightweight
Reduces rotating mass to the absolute minimum.
High Precision
ABEC 5-7 for sensitive pointing and scanning devices.
Versatile Contact Types
Angular, radial, four-point for design flexibility.
Corrosion Resistant Options
Stainless steel for space and medical use.
Custom Engineered Envelope
SKF works directly with designers to maximise space savings.
Ultra-Slim Bearings in Space Telescopes and Satellites
Space applications demand bearings that are lightweight, thermally stable, and can operate in vacuum without lubrication. SKF Ultra-Slim bearings with dry film lubrication or ceramic balls meet these stringent requirements, enabling precise mirror positioning in earth observation satellites.
Miniature Surgical Robots Using Ultra-Slim Bearings
Endoscopic robots require bearings that fit within a fingertip-sized package while maintaining smooth, accurate articulation. SKF’s Ultra-Slim bearings provide the necessary precision and low friction for manipulator joints, sterilised to medical-grade specifications.