52222 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 52222 model number is decoded

Listed in SKF 17000 chapter 5, 52222 is an ISO 104 double-direction thrust ball bearing, 95 mm bore and 160 mm OD on a flat housing seat, standing 67 mm high before installation. Construction is a five-component stack: one central shaft washer with tracks on both faces, two outward-facing housing washers and two cage sets, which lets one housing recess accept thrust from either direction. note the bore of 52222 is 95 mm by the dimension table: the double-direction series was deliberately aligned to the 51/53 washer sets with shifted codes, so the familiar 04=20 arithmetic does not apply here. no cage suffix means the standard stamped steel retainer — a pressed sheet-metal ball-cage assembly that covers the bulk of the thrust-ball assortment. Envelope 95×160×67 mm (3.74×6.299×2.638 in), 32.5 mm radial section, C 125 kN, C0 365 kN, Pu 11.6 kN. reference speed 1,300 r/min (thermal) and limiting speed 1,800 r/min (mechanical), catalogue mass 4650 g. Sizing arithmetic on the 95 mm bore: 125 kN C over the 32.5 mm radial section gives 3.8 kN per section millimetre, and the 67 mm stack height is 2.06× that section — proportions typical of a 52200 thrust section. Speed planning separates the two ceilings mechanically: the pressed cage and balls tolerate 1,800 r/min while thermal balance under catalogue load sets the 1,300 r/min reference; at dm ≈ 127.5 mm the corresponding dn is approximately 230k mm·r/min. Minimum-load arithmetic: with dm ≈ 127.5 mm and factor A 0.79, Fam ≈ A·(n·dm/1000)² at the 1,300 r/min reference speed is about 21.7 kN for 52222; below that preload the balls skid and smear the tracks. Stack/annulus proportions: the 67 mm axial stack over the 13,018 mm² washer annulus gives 5.15 mm of height per annular square millimetre ×10⁻³, and at 4650 g the bearing holds about 78.5 kN of C0 per kilogram. Envelope economics: the 67 mm axial height over a 32.5 mm radial section yields 1.9 kN of dynamic capacity per height millimetre, and the bearing weighs 4650 g for 125 kN C — about 37 g per rated 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. Life accounting for 52222 is done separately per direction: if duty applies 125 kN C predominantly one way, the idle side's skid risk — not the loaded side's L10 — usually sets the relubrication and preload interval.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• The double-direction 52222 is one central shaft washer with tracks on both faces, two housing washers and two ball-cage assemblies — a single unit locating the 95 mm shaft axially in both directions instead of a mirrored pair.
• Each direction independently needs the minimum axial load (factor A 0.79): 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.
• Torque the cover to leave the catalogue axial freedom, never solid: a clamped double-direction stack cannot float to its thermal position, and at 1,800 r/min even a small thermal thrust preload smears the hottest track.
• The 125/365 kN figures belong to 52222 specifically (the double flat pressed steel execution of 52222); suffixed, sphered and counterpart-series order numbers are separate articles, so write the complete designation on the order and the maintenance record.