The dynamic load rating of 9.95 kN characterises this bearing. The static load rating is 4.75 kN. This variant features increased radial clearance (C3). A lightly pressed lip wears more slowly than a heavily pressed one — the barrier effect therefore stays more uniform over the operating period, even though it is lower from the outset. The low-contact seal on both sides occupies the gap between a non-contacting and a contacting version, and its properties follow directly from that intermediate position.
The elastomeric sealing body brings a lip up to the shoulder or groove of the inner ring, but with a light contact pressure: a considerable part of the ingress of dust and spray moisture is thereby prevented without accepting the load-independent frictional torque of a lip laid out for tightness. The permissible speed and the warming of the position accordingly lie between the two neighbouring designs and are to be taken from the designation, because they cannot be derived from the design description alone.
A further difference concerns the behaviour over time: a lightly pressed lip is subject to slower wear, so the barrier effect stays more uniform than in a heavily pressed version, whose effect is higher at the outset and declines with the operating hours. For flushed or continuously wetted positions a contact version or an upstream seal remains the applicable choice.
Increased clearance (C3) holds an allowance ready for the shares that consume the mounted clearance — interference fit, external temperature gradient and the small heat contribution of the lip — so that a residual clearance remains in the warm running state without preloading the rolling contact. The grease charge is enclosed and dimensioned for the service life; relubrication is not foreseen.
Through-hardened standard bearing steel sets the frame for hardness, dimensional accuracy and the catalogue ratings of the rings. Increased radial clearance C3 — Dimensional/form-fit equivalent — verify suffix-level details for critical applications. Matching suffixes are also listed by FAG (C3), NSK (C3), NTN (C3) and NACHI (C3).
ManufacturerSKF
Bearing typeDeep-groove ball bearings
Bore d17 mm
Outer Ø D40 mm
Width B12 mm
Dyn. load C9.95 kN
Stat. load C₀4.75 kN
Fatigue limit Pu0.2 kN
Weight0.065 kg
Sealslow-friction seals on both sides
Clearanceradial internal clearance greater than normal
Cagepressed steel cage
Materialstandard bearing steel
Tolerancetolerance class P0/PN (ABEC 1)
Shaft shoulder dₐ21.2–24.5 mm
Housing shoulder Dₐ32.7–35.8 mm
Bore typecylindrical bore
€4.31/ pc€6.40−33 %
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QtyUnit priceDisc.
1 – 4€4.31—
5 – 9€4.18−3 %
10 – 24€4.09−5 %
25 – 49€3.96−8 %
50 – 99€3.88−10 %
4 more for −3% volume discount
From 100 pcs: price and lead time on request – subject to review.
Total (1 pc)€4.31
SKF 6203-2RSL/C3 Kugellager (17x40x12)
— 17 x 40 x 12 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.
