The dynamic load rating of 28 kN characterises this bearing. The static load rating is 15.4 kN. This variant features a contact seal. Sealed on both sides and supplied with the matching grease charge, this bearing is intended as a ready-to-install unit whose service life the design cannot extend by relubrication. The contact seal consists of an elastomeric sealing body with a lip that bears against a shoulder or in a groove of the inner ring, guided there with a defined contact pressure.
The difference from a non-contacting version is fundamental: a restriction slows entry, a contact prevents it — which is why this version keeps not only coarse particles but also splash water, spray mist and fine dust away from the rolling chamber, and retains the grease charge even where the position stands vertically or centrifugal forces act on it.
This effect is bought with a frictional torque that depends not on the load but on the lip geometry and its contact pressure: it is present even at no load, stands out clearly at breakaway, and generates a heat source of its own directly at the inner ring, which is why the permissible speed of this version lies below that of an open or non-contacting variant.
The grease charge is enclosed and dimensioned for the service life, so relubrication is not foreseen; the design of the position therefore has to be oriented to the grease service life at the actual operating temperature. As a wearing part the lip is subject to an ageing that depends on circumferential speed, temperature and medium, so the barrier effect declines over operating time; in applications with long standstill periods and changing humidity this course has to be taken into account.
Normal radial clearance is matched to one interference-fitted ring and a moderate temperature difference between the rings, whereby the heat introduced by the seal has to be attributed to the inner ring. Through-hardened standard bearing steel sets the frame in which the ratings listed in the catalogue apply; the temperature limit of the sealing material is independent of it and is to be taken from the designation.
Contact seals on both sides (rubber lip seal) — Dimensional/form-fit equivalent — verify suffix-level details for critical applications. Matching suffixes are also listed by SKF (2RSH, 2RS1), NSK (DDU), NTN (LLU) and NACHI (2NSE).
ManufacturerFAG
Bearing typeDeep-groove ball bearings
Bore d35 mm
Outer Ø D72 mm
Width B17 mm
Dyn. load C28 kN
Stat. load C₀15.4 kN
Weight0.294 kg
Sealscontact seals on both sides
Clearancenormal radial internal clearance
Cagepressed steel cage
Materialstandard bearing steel
Tolerancetolerance class P0/PN (ABEC 1)
Shaft shoulder dₐ42–46.9 mm
Housing shoulder Dₐ60–65 mm
Bore typecylindrical bore
€6.58/ pc€9.63−32 %
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1 – 4€6.58—
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Total (1 pc)€6.58
FAG 6207-2RSR Kugellager (35x72x17)
— 35 x 72 x 17 mm
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Same dimensions means the same bearing type and matching main dimensions (d × D × B). Sealing, cage, internal clearance and execution (e.g. material, precision, grease fill) are encoded in the suffix and may differ — please check before ordering. Equivalent additionally means the same sealing, internal clearance and tolerance class; the cage and other suffix features (e.g. lubrication groove) may differ.
