The dynamic load rating of 9.534 kN characterises this bearing. The static load rating is 4.75 kN. The limiting speed is 21000 rpm. This variant features extra-large radial clearance (C5). With very strongly increased clearance (C5) and a small radial load, only a narrow sector of the ball set carries; the load-free balls are taken along by the cage and can slide in the rolling contact instead of rolling.
Very strongly increased clearance (C5) is the widest of the listed clearance classes, and it is not chosen for the fit alone but because heat is permanently supplied to the position from the inside. Where the inner ring is held at temperature by a hot shaft or a heated component while the outer ring cools through the housing, the inner ring expands permanently further, and the difference is taken directly out of the clearance.
If this allowance is set too small, the rolling contact is preloaded, the frictional torque rises, and the heat thereby generated closes the remaining clearance further — a course of events that reinforces itself. The opposite direction has to be assessed as well: in the cold state and at low radial load the full clearance is present, the load zone is narrow, and the ball set can slide on start-up before the operating temperature has established itself.
The open form suits this application picture, because heat removal can take place through the lubricant and the position is not tied to the temperature limit of a sealing material supplied with the bearing. The lubricant itself remains to be checked: it must withstand the same temperature that prompted the choice of clearance class, and relubrication intervals are to be set against that temperature rather than against a catalogue reference value.
Through-hardened standard bearing steel retains its hardness and dimensional accuracy only within the range stated for the series; whether a position may be operated above it is to be taken from the designation and the dimensional stabilisation data, and is not to be inferred from the clearance class.
ManufacturerSKF
Bearing typeDeep-groove ball bearings
Bore d17 mm
Outer Ø D40 mm
Width B12 mm
Dyn. load C9.534 kN
Stat. load C₀4.75 kN
Limiting speed21,000 min⁻¹
Reference speed18,000 min⁻¹
Weight0.057 kg
Sealsnone (open bearing)
Clearanceradial internal clearance very much greater than normal
Cagepressed steel cage
Materialstandard bearing steel
Tolerancetolerance class P0/PN (ABEC 1)
Shaft shoulder dₐ21.2–24.2 mm
Housing shoulder Dₐ32.9–35.8 mm
Bore typecylindrical bore
€21.69/ pc€28.51−24 %
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Lowest price in the 30 days before the reduction: €28.51
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QtyUnit priceDisc.
1 – 4€21.69—
5 – 9€21.04−3 %
10 – 24€20.61−5 %
25 – 49€19.96−8 %
50 – 99€19.52−10 %
4 more for −3% volume discount
From 100 pcs: price and lead time on request – subject to review.
Total (1 pc)€21.69
SKF 6203/VA201 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.
