52210 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-28

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 52210 model number is decoded

52210 is SKF's 40 mm-bore double-direction thrust ball bearing in the 52200 series to the ISO 104 dimension plan, with a flat housing seating surface, measuring 40×78×39 mm. The unit stacks one central shaft washer (ground bore, tight on the shaft), two outward-facing housing washers and two ball-cage assemblies, reacting axial force in both directions. double-direction 52/54 numbering does NOT decode the bore by the usual single-direction ×5 code — read the 40 mm bore from the dimension table; codes recur across the 522/523/524 sections and systematically trail the 51/53 code values. with no cage suffix this is the standard execution with a stamped sheet-steel ball-cage assembly (pressed cage) — the light, quiet and economical cage for small and medium thrust-ball sizes. Envelope 40×78×39 mm (1.575×3.071×1.535 in), 19.0 mm radial section, C 49.4 kN, C0 116 kN, Pu 4.3 kN. reference speed 2,400 r/min (thermal) and limiting speed 3,400 r/min (mechanical), catalogue mass 710 g. Light-load floor: Pu = 4.3 kN is the equivalent-load threshold below which the SKF adjusted-life equation credits very long life for 52210; the number is 9 % of the 49.4 kN dynamic rating. Mass and section check: 710 g inside the 40×78×39 mm outline leaves a 19.0 mm radial section, and the 116 kN static rating is 2.35× the dynamic rating — plan static safety and minimum preload against those figures. At the printed limiting speed of 3,400 r/min the mean pitch diameter dm ≈ 59.0 mm implies a dn value around 201k mm·r/min; the 2,400 r/min reference speed is the thermal-planning value under catalogue load. Rating split for documentation: dynamic 49.4 kN (L10 life), static 116 kN (safety factor s0), fatigue limit 4.3 kN (adjusted life) — three different uses of three different numbers for 52210, none interchangeable with another. Capacity density: 49.4 kN C from 0.710 kg of bearing steel gives about 69.6 kN per kilogram; static density is correspondingly 163.4 kN/kg at C0 116 kN. Double-direction order-number note: the unit is built around one central shaft washer with a ground bore and tracks on both faces, flanked by two housing washers and two independent ball-cage assemblies; observe the assembly orientation (the two housing washers face outwards) and note that a 52-series unit replaces a mirrored pair of 51-series bearings only after the stack height and seat drawings are re-checked. At 40 mm bore and 39 mm overall height the unit drops into one recess where a mirrored single-direction pair would need two seats; both loose 78 mm housing washers must remain free to slide during thermal movement.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Each direction independently needs the minimum axial load (factor A 0.069): the side that is momentarily unloaded during slow reversal skids first, so arrange preload or symmetry rather than assuming the loaded side drives the idle side.
• The central shaft washer takes the interference fit on the 40 mm shaft while both outer housing washers run loose in their registers; both loose washers need positive axial retention on vertical shafts.
• Do not replace a 52210 with two single-direction 51-series bearings without re-checking the arrangement: envelope heights, seat details and catalogue ratings differ, even at the same 40×78 mm bore and OD.
• Observe the stack order at fitting: shaft washer central, the two housing washers facing outwards with a cage set on each side; the 39 mm total height is not twice a single-direction bearing height, so reuse of old cover dimensions is a trap.
• Ordering discipline for 52210: the catalogue page quotes 52210 and its 49.4/116 kN ratings as one exact article; bare-number substitutions from another series or brand need a fresh dimension and rating check, not a like-for-like assumption.