3208-A-2RS1 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the 3208-A-2RS1 model number is decoded

3208 A-2RS1 is the capped double-row angular-contact ball bearing for a 40 mm shaft, 40×80×30.2 mm, greased and sealed (or shielded) for life at the SKF works. A on this double-row bearing means no filling slots, so both ball rows retain their full complement. -2RS1 marks a contact NBR elastomer seal on each side, riding the inner ring: better fine-dust and moisture protection than a shield at the cost of seal drag and a lower speed ceiling. Envelope 40×80×30.2 mm (1.575×3.15×1.189 in), 20.0 mm radial section height, C 48 kN, C0 36.5 kN, Pu 1.56 kN.SKF publishes only the 5,600 r/min limiting speed for this execution, catalogue mass 570 g. Sizing arithmetic on the 40 mm bore: 48 kN C divided by the 20.0 mm radial section height gives 2.4 kN per section millimetre; the 570 g mass and 3 % Pu/C share frame the light-load floor for the adjusted-life check. Envelope economics: the 30.2 mm width over a 20.0 mm section yields 1.51 mm of ring width per section millimetre, and the bearing weighs 570 g for 48 kN of dynamic capacity — about 12 g per rated kN. Speed-ratio note for this exact unit: no thermal reference speed is listed (seal/grease life governs), so the 5,600 r/min limiting value is the single published ceiling. Contact-seal execution note: the two NBR -2RS1 lips ride the inner-ring lands, sealing the factory grease against moisture and fine dust; the lips add running torque and set the lower limiting speed printed for this size, and the sealed cavity is maintenance-free by design (no relubrication path). The A-2Z shielded order number is the low-drag alternative for cleaner positions.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Open 3208 and capped 3208-A-2RS1 share the 40×80×30.2 mm envelope and 48/36.5 kN ratings — the choice is maintenance access and contamination, not capacity.
• Fit and fillet rules are unchanged from the open double-row 3208: k5 on a 40 mm rotating shaft, radii clearing the chamfer.
• The contact NBR seals add drag and a lower speed ceiling: no relubrication is provided for, so mounting cleanliness decides much of the real grease life.
• Never wash 3208-A-2RS1 in solvent: the lifetime grease fill cannot be replaced once flushed out.
• Catalogue ratings are SKF PUB BU/P1 17000 figures for 3208 A-2RS1 as the double contactsealed execution; the other order numbers of the 3208 size are different products and may carry different ratings — always quote the full designation when purchasing.