22206 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 22206 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 22206 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 22206 encode the bore: code 06 = 30 mm (code × 5 from 04 upward). The ISO 15 envelope is 62 mm outside diameter and 20 mm width — 1.181 × 2.441 × 0.787 in, with a 16.0 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 k5 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

• At 30 mm bore the small 22206 is often delivered sealed (2CS) and grease-filled for life in conveyor idlers — do not add grease nipples to a sealed row; for the open version, keep housing seals effective because the 20 mm cavity holds little oil reserve.
• The 222 medium series at 30 mm bore (62×20 mm, 16.0 mm section) is the default general-purpose spherical row; on the same bore a 22306 is larger and wider with far higher load rating — do not swap a failed 22306 down to a 22206 without re-rating life.
• The 20 mm-wide 22206 seats against shaft and housing shoulders whose fillet must clear the bearing chamfer: keep the corner radius small enough that the 30 mm bore and 62 mm OD faces abut square — an undercut beats an oversized radius, which lifts the ring and edge-loads the 16.0 mm section.
• For a cylindrical-bore 22206, warm the inner ring to 80–100 °C (induction heater, never a flame) and slide it dry to the shoulder of the 30 mm shaft; cooling creates the interference, while hammering cold through the 62 mm assembly dents the sphered raceways.
• Relubricate 22206 through the W33 groove while the shaft turns slowly so fresh grease flushes the full 20 mm-wide roller set; pumping grease into a stationary bearing channels it past one row and leaves the other side of the 30 mm bore starved.
• Match the cage to the duty: the E/CC stamped window-steel cage is the standard for general 22206 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 22206 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.