22222 bearing: complete specifications & equivalents

Specification table

Source: ISO 15 boundary-dimensions standard · extracted 2026-09-24

Standard-interchange bearing: dimensions per ISO 15; CN clearance, P0 tolerance and a stamped-steel cage are catalogue defaults unless the supplier states otherwise, and mass is a geometry-derived estimate. Brand catalogue load ratings and limiting speeds for 22222 are being backfilled — use the inquiry form for certified values.

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 22222 model number is decoded

In the 22200-series (ISO 15 dimension series) the leading 2 marks a double-row spherical roller and the last two digits of 22222 encode the bore: code 22 = 110 mm (code × 5 from 04 upward). The ISO 15 envelope is 200 mm outside diameter and 53 mm width — 4.331 × 7.874 × 2.087 in, with a 45.0 mm radial section height. Two rows of symmetrical barrel rollers on a common sphered outer raceway self-align to shaft deflection while carrying heavy radial load and bidirectional axial load. Typical catalogue practice for a rotating inner ring is a m6 shaft seat, H7 housing and C3 internal clearance; K variants use a 1:12 tapered bore on an adapter sleeve — verify against the mounting arrangement.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The large 110 mm-bore 22222 mounts with real force: use induction heating or hydraulic drive-up on the tapered seat, measure residual clearance in micrometres, and plan lifting fixtures — the 53 mm double-row assembly cannot be drifted into position without brinelling.
• The 222 medium series at 110 mm bore (200×53 mm, 45.0 mm section) is the default general-purpose spherical row; on the same bore a 22322 is larger and wider with far higher load rating — do not swap a failed 22322 down to a 22222 without re-rating life.
• Before fitting 22222, machine the 110 mm shaft seat and 200 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 53 mm-wide rings only load correctly when the full faces abut, and a large radius pinches the 45.0 mm radial section.
• On a K tapered bore with adapter sleeve, tighten the KM locknut to drive the 22222 up the sleeve, rotating the inner ring, and stop on residual clearance — measured with feelers at the unloaded rollers — not on torque alone; then lock the tab washer so the 110 mm seat cannot creep.
• Read the damage pattern on a removed 22222: spalling concentrated on one side of the 200 mm outer race points to misalignment or thrust overload, while uniform roller-end smearing means minimum-load skidding — the two failures demand opposite corrections.
• Match the cage to the duty: the E/CC stamped window-steel cage is the standard for general 22222 service, while the machined brass CA cage is preferred for heavy shock and vibratory applications — never replace a CA row with a CC row in a screen or crusher without re-rating.
• In a classic two-bearing arrangement the 22222 often serves as the non-locating (floating) bearing, taking radial load while the housing bore lets it drift; it can locate axially in both directions, but sustained pure thrust beyond the catalogue limit unloads one roller row.