52226 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 52226 model number is decoded

Listed in SKF 17000 chapter 5, 52226 is an ISO 104 double-direction thrust ball bearing, 110 mm bore and 190 mm OD on a flat housing seat, standing 80 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 52226 is 110 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 110×190×80 mm (4.331×7.48×3.15 in), 40.0 mm radial section, C 182 kN, C0 585 kN, Pu 16.6 kN. reference speed 1,100 r/min (thermal) and limiting speed 1,500 r/min (mechanical), catalogue mass 8000 g. Speed band width for this size is 400 r/min between reference and limiting (1.36× ratio); lubrication, preload and heat removal decide where inside that band 52226 can actually run. Track-circle loading: per millimetre of mean track circumference the 182 kN dynamic rating corresponds to roughly 0.39 kN/mm of π·dm track, a useful comparison against the other dimension series of the 110 mm bore. Mass and section check: 8000 g inside the 110×190×80 mm outline leaves a 40.0 mm radial section, and the 585 kN static rating is 3.21× the dynamic rating — plan static safety and minimum preload against those figures. Pitch-diameter arithmetic: dm = (110+190)/2 = 150.0 mm; at the 1,500 r/min limiting speed that corresponds to roughly 225k mm·r/min, the figure used when comparing cage speed demand across the thrust-ball series. Imperial cross-check for procurement drawings: 4.331 in bore, 7.48 in OD, 3.15 in height, and the 8000 g catalogue mass converts to 8.000 kg (282.2 oz). 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 52226 is done separately per direction: if duty applies 182 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 80 mm total height is not twice a single-direction bearing height, so reuse of old cover dimensions is a trap.
• The double-direction 52226 is one central shaft washer with tracks on both faces, two housing washers and two ball-cage assemblies — a single unit locating the 110 mm shaft axially in both directions instead of a mirrored pair.
• Torque the cover to leave the catalogue axial freedom, never solid: a clamped double-direction stack cannot float to its thermal position, and at 1,500 r/min even a small thermal thrust preload smears the hottest track.
• Service both cage sets together: replacing only the noisy side while leaving the worn 585 kN opposite track in place reproduces the failure within weeks — inspect both shaft-washer faces and both loose washers at removal.
• Ordering discipline for 52226: the catalogue page quotes 52226 and its 182/585 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.