Ultra-Slim Thin Section Bearings
Cross sections thinner still than the standard thin section families, for designs where every millimetre of radial build counts. Load ratings fall with the section, so these get chosen when space rules the design and the loads really are light. SES holds the range as an authorised SKF distributor, covering section Very thin, in several fixed sizes; types Radial, angular and four-point contact; bore span Small through to large diameters; materials Chrome bearing steel, stainless on request. Executions include radial contact executions, angular contact executions, four-point contact executions, stainless steel executions, among others. It is specified most often into handheld and portable instrument axes and compact camera and optics gimbals. Every part is genuine SKF through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
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From integrated steel plants to power utilities and EPC majors — the works that cannot afford a counterfeit part specify through SES.
Section
Thinner than standard thin section series
Load
Light — selection driven by space
Weight
Lowest of the thin section families
Sensitivity
Very high to housing accuracy
Where it runs.
You will find Ultra-Slim Thin Section Bearings in the parts of a plant where this particular duty actually occurs. In practice that means handheld and portable instrument axes, compact camera and optics gimbals, medical device rotary joints, and equally space-constrained robotic wrists, encoder and resolver mountings, miniature turntables in laboratory equipment. What links them is the duty rather than the machine name — section: Thinner than standard thin section series. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the SKF range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. The load calculation lands close to the rating — Step up to a standard thin section. Ultra-slim rings hold no reserve and there is nothing in the section to absorb an overload. Housing is moulded, cast or fabricated — A machined seat, or a steel insert. The thinner the ring, the more faithfully it copies the housing bore, and a moulded bore is never round enough. Assembly is done by hand on a bench — A fitting sleeve that presses on the correct ring only. Load pushed through the balls at this section brinells the raceway immediately. Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
Handle them by the outside diameter with both hands, never by lifting one ring and letting the other hang. The balls then carry the whole weight of the free ring at a point, and that alone is enough to leave dents at this section.