22209 bearing: complete specifications & equivalents
The 22209 is a ISO 15 radial bearing sized 45 x 85 x 23 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 45 mm |
| Outer diameter D | 85 mm |
| Width B | 23 mm |
| Seal / shield | open |
| Internal clearance | CN / C3 / C4 available |
| Tolerance class | P0 |
| Cage | steel |
| Operating temperature | -30 to +120 °C |
| Mass (geometry estimate) | 479 g |
| Standard | ISO 15 |
| Catalog version | iso15-srb-geometry |
| Last verified | 2026-09-24 |
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 22209 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 22200-series range
| Bore d | 1.772 in |
|---|---|
| Outer diameter D | 3.346 in |
| Width B | 0.906 in |
| ISO bore code | 09 |
| Radial section height (D−d)/2 | 20 mm |
| Smallest bore in 22200-series | 25 mm |
| Largest outer diameter in 22200-series | 290 mm |
| Width range across 22200-series | 18–80 mm |
| Bore position in 22200-series (smallest first) | 5 of 22 |
| Bore above smallest 22200-series size | 20 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22209 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 22209 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 22209 encode the bore: code 09 = 45 mm (code × 5 from 04 upward). The ISO 15 envelope is 85 mm outside diameter and 23 mm width — 1.772 × 3.346 × 0.906 in, with a 20.0 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
Common applications
- industrial gearbox and drive shafts
- elevator winches and hoist drums
- process crane travel wheels
- conveyor head and tail pulleys
- vibrating screens, feeders and shakeout machines
Known failure patterns
- roller smearing and skid marks when the radial load falls below the minimum load needed to drive the roller set
- cage fatigue and fracture on vibratory screens supplied with normal CN clearance instead of a vibratory C4 fit
- fretting corrosion on a tapered-bore sleeve seat when drive-up is insufficient and the inner ring works on the adapter
- lubricant starvation and cage wear where the relubrication interval ignores the slow-speed, dirty operating regime
- water and grit pitting of open bearings in mining and pulping duty after the housing seals degrade
Selection pitfalls — read before you substitute
- On this 45 mm-bore 22209, specify C3 clearance as the default for an interference inner-ring fit and verify residual play after mounting; a medium-section row that ran free on the bench can be fully clamped at operating temperature on the 45 mm shaft.
- The 222 medium series at 45 mm bore (85×23 mm, 20.0 mm section) is the default general-purpose spherical row; on the same bore a 22309 is larger and wider with far higher load rating — do not swap a failed 22309 down to a 22209 without re-rating life.
- The 23 mm-wide 22209 seats against shaft and housing shoulders whose fillet must clear the bearing chamfer: keep the corner radius small enough that the 45 mm bore and 85 mm OD faces abut square — an undercut beats an oversized radius, which lifts the ring and edge-loads the 20.0 mm section.
- For a cylindrical-bore 22209, warm the inner ring to 80–100 °C (induction heater, never a flame) and slide it dry to the shoulder of the 45 mm shaft; cooling creates the interference, while hammering cold through the 85 mm assembly dents the sphered raceways.
- Relubricate 22209 through the W33 groove while the shaft turns slowly so fresh grease flushes the full 23 mm-wide roller set; pumping grease into a stationary bearing channels it past one row and leaves the other side of the 45 mm bore starved.
- Spherical rollers need a minimum radial load to keep the rollers driven — as a rule of thumb about 2% of the basic dynamic load rating; an unloaded 22209 on an idler or in a cold-start drive will skid and smear, so add preload, reduce the bearing size or use a sealed grease-filled variant.
- Choose the bore type deliberately: plain 22209 takes a cylindrical seat, while the K variant has a 1:12 tapered bore and mounts on an adapter sleeve (H3xx series) over a plain commercial shaft or directly on a tapered journal — the two mounting procedures are not interchangeable.
Frequently asked questions
What are the dimensions of a 22209 spherical roller bearing?
A 22209 double-row spherical roller bearing per ISO 15 has a 45 mm bore, 85 mm outer diameter and 23 mm width (1.772 × 3.346 × 0.906 in), a 20.0 mm radial section and roughly 479 g geometry-based estimated mass; catalogue masses vary with cage and design.
How does the 22209 bore code work?
The leading 2 in 22209 denotes a double-row spherical roller, the middle digits give the ISO 15 dimension series, and the last two digits are bore code 09: 09 × 5 = 45 mm. The 85 mm OD and 23 mm width come from the dimension series (22200), not from the bore code alone.
How much misalignment can a 22209 accommodate?
Thanks to the sphered outer ring raceway, 22209 normally accommodates angular misalignment of around 1° under load (up to about 2° in favourable, lightly loaded conditions); the permissible value is smaller under full load and depends on clearance and cage design, so check the catalogue figure for the actual duty.
What is the difference between 22209 and 22209K?
The plain 22209 has a cylindrical bore for a straight shaft seat. The K suffix denotes a 1:12 tapered bore, normally mounted on an H3xx adapter sleeve over a commercial shaft (or directly on a tapered journal); the bearing is driven up the sleeve to a specified residual clearance and locked with a KM nut and tab washer.
Should the 22209 be ordered with CN, C3 or C4 clearance?
Use C3 as the usual default when the rotating inner ring has an interference fit, because the fit plus thermal expansion reduces residual play; choose C4 (often with a vibratory cage design) for screens and feeders; order CN mainly for loose fits on stationary shafts or split housings. A W33 outer-ring lubrication groove is a separate, commonly combined option.
Reviewed & verified by the MPN Base engineering desk against source catalog iso15-srb-geometry on 2026-09-24. Read our editorial & correction policy.