2204 ETN9 bearing
20 × 47 mm · dynamic rating 16.8 kN · static rating 4.15 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
2204 ETN9 specification
| Designation | 2204 ETN9 |
| Type | Self-aligning ball bearing |
| Series | 2-series wide |
| Bore diameter d | 20 mm |
| Outside diameter D | 47 mm |
| Basic dynamic load rating C | 16.8 kN (16,800 N) |
| Basic static load rating C0 | 4.15 kN (4,150 N) |
| Ratio C0/C | 0.25 |
| Speed guide, grease lubrication | 20,000 rpm |
| Life exponent p | 3 (ball bearing) |
Values come from the Rotec AI bearing catalogue and are indicative. Confirm against the manufacturer's current catalogue before ordering. Not every dimension (such as width) is listed here.
What the designation 2204 ETN9 means
| Code | Meaning |
|---|---|
| 2 | Self-aligning ball bearing, wide width series (higher capacity) |
| 20 | bore code "20" = 20 × 5 = 20 mm |
| E | Optimized internal design |
| TN9 | Glass-fibre-reinforced PA66 cage |
Basic rating life of the 2204 ETN9
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 3 (ball bearing). For a 2204 ETN9 with C = 16.8 kN, the table shows what that gives at different load levels. It is the ISO 281 basic life only: it does not include lubrication, contamination, misalignment or reliability modifiers.
| C / P | P as share of C | L10 (million rev) | L10 at 1,500 rpm | L10 at 3,000 rpm |
|---|---|---|---|---|
| 3 | 33.3% | 27 | 300 | 150 |
| 5 | 20.0% | 125 | 1,400 | 690 |
| 8 | 12.5% | 512 | 5,700 | 2,800 |
| 12 | 8.3% | 1,728 | 19,200 | 9,600 |
For example, a C / P of 5 means the equivalent load is 3.36 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 2204 ETN9
Brand-by-brand equivalents for this exact designation are not shown here. The Cross-Reference tool accepts SKF, FAG, NSK, NTN, Timken, Koyo and NRB designations, and shows what is catalogued.
Where the 2204 ETN9 is used
Self-aligning ball bearings are chosen for: Radial load with some axial load, where shaft/housing misalignment is expected. Typical equipment: Conveyors, agitators, textile machinery, general light-to-moderate industrial equipment. Self-aligning by design (spherical outer raceway) — most misalignment-tolerant ball bearing, but at lower load capacity for the same bore than a comparable deep groove ball.
Other sizes in the same series
The 2204 ETN9 belongs to the “2-series wide” series. The next size down, the 2203 ETN9, has a bore of 17 mm and a dynamic rating of 10.6 kN. The next size up, the 2205 ETN9, has a bore of 25 mm and a rating of 16.8 kN (+0%).
Common problems on bearings like the 2204 ETN9
Most field failures trace back to lubrication, contamination, fits and alignment rather than the bearing itself. These guides explain how to recognise and prevent them:
Questions about the 2204 ETN9
What are the dimensions of a 2204 ETN9 bearing?
The 2204 ETN9 has a bore of 20 mm and an outside diameter of 47 mm. It is a self-aligning ball bearing. Series: 2-series wide.
What is the load rating of a 2204 ETN9 bearing?
In the Rotec AI catalogue the 2204 ETN9 has a basic dynamic load rating C of 16.8 kN and a basic static load rating C0 of 4.15 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 2204 ETN9 bearing?
Use the Cross-Reference tool in Rotec AI to check brand equivalents for the 2204 ETN9.