52220 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 52220 model number is decoded

The 52200 series order number 52220 is a SKF double-direction thrust ball bearing for a 85 mm seat, built to ISO 104, with a flat housing seating surface, 85×150×67 mm boundary dimensions. Inside the unit sit a single central shaft washer with a ground interference bore, two outward-facing loose housing washers and two independent ball-cage assemblies, so axial force is reacted in both directions from one housing recess. bore-coding caveat: on 52/54 double-direction bearings the last two digits are an order-number code, not ×5 millimetres — this size carries a 85 mm bore per the ISO 104 table, and guessing from the code gives the wrong shaft. the suffix-free listing carries the catalogue default: a pressed (stamped sheet-steel) ball-cage assembly, light and quiet, used across the small and medium sizes. Envelope 85×150×67 mm (3.346×5.906×2.638 in), 32.5 mm radial section, C 119 kN, C0 325 kN, Pu 10.8 kN. reference speed 1,300 r/min (thermal) and limiting speed 1,800 r/min (mechanical), catalogue mass 4200 g. Imperial cross-check for procurement drawings: 3.346 in bore, 5.906 in OD, 2.638 in height, and the 4200 g catalogue mass converts to 4.200 kg (148.1 oz). Speed-ratio note for this exact unit: the reference speed is 1,300 r/min against a 1,800 r/min limiting speed, a reference-to-limit ratio of 0.72. Bore-to-OD planning: OD 150 over bore 85 is a 1.76× step for this size, and the 67 mm height gives a bore/height ratio of 1.27; use these ratios when the housing recess around the 85 mm shaft is the first constraint. Light-load floor: Pu = 10.8 kN is the equivalent-load threshold below which the SKF adjusted-life equation credits very long life for 52220; the number is 9 % of the 119 kN dynamic rating. Preload at the mechanical ceiling: repeating Fam ≈ A·(n·dm/1000)² with factor A 0.62 at the 1,800 r/min limiting speed raises the required axial preload to about 27.7 kN; the reference-speed value 14.5 kN is the thermal design point. 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 85 mm bore and 67 mm overall height the unit drops into one recess where a mirrored single-direction pair would need two seats; both loose 150 mm housing washers must remain free to slide during thermal movement.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Service both cage sets together: replacing only the noisy side while leaving the worn 325 kN opposite track in place reproduces the failure within weeks — inspect both shaft-washer faces and both loose washers at removal.
• Observe the stack order at fitting: shaft washer central, the two housing washers facing outwards with a cage set on each side; the 67 mm total height is not twice a single-direction bearing height, so reuse of old cover dimensions is a trap.
• Where shaft and housing cannot be kept square, the sphered 54-series execution of the same bore with two U seat washers is the self-aligning counterpart; the flat 52200 unit has no alignment capacity.
• Do not replace a 52220 with two single-direction 51-series bearings without re-checking the arrangement: envelope heights, seat details and catalogue ratings differ, even at the same 85×150 mm bore and OD.
• Catalogue ratings are SKF PUB BU/P1 17000 figures for 52220 as the double flat pressed steel execution; other order numbers of the 52220 size are different products and may carry different ratings or seating geometry — always quote the full designation when purchasing.