7204 Bearing — Cross-Reference & Equivalents
The 7204 is an angular contact ball bearing with ISO 15 boundary dimensions 20×47×14 mm. The table below lists how 8 major brands designate it, with catalog links and interchange notes.
Replacing a 7204? The cross-reference table below gives the equivalent part number for every major brand — but read the interchange rules first: an identical size is not always a safe swap.
Specifications
| Bore (d) | 20 mm |
|---|---|
| Outer Diameter (D) | 47 mm |
| Width (B) | 14 mm |
| Type | Angular Contact Ball Bearing |
| Standard | ISO 15 |
Cross-Reference by Brand
| Brand | Part No. | Boundary dims | Catalog |
|---|---|---|---|
| SKF | 7204 | match | SKF catalog ↗ |
| NSK | 7204 | match | NSK catalog ↗ |
| FAG | 7204 | match | FAG catalog ↗ |
| NTN | 7204 | match | NTN catalog ↗ |
| KOYO | 7204 | match | KOYO catalog ↗ |
| NACHI | 7204 | match | NACHI catalog ↗ |
| Timken | 7204 | match | Timken catalog ↗ |
| INA | 7204 | match | INA catalog ↗ |
Interchange notes
All brands build this designation to the same ISO 15 boundary dimensions (d, D, B), so the mounting envelope is interchangeable. For angular contact ball bearings, matching dimensions is necessary but NOT sufficient: (1) The contact-angle suffix (A≈30°, B≈40°, C≈15°, AC≈25°) sets axial load capacity, stiffness and axial displacement — different angles are NOT interchangeable even at the same size. (2) A single-row angular contact bearing takes thrust in ONE direction only and fails if the axial load reverses, so it is normally mounted in pairs (back-to-back DB, face-to-face DF or tandem DT) — orientation is part of the design, not a field choice. (3) Only 'universal matching' bearings (suffix e.g. CB/CC/GA/GB) may be freely arranged into a pair; non-universal ones cannot. (4) Match the 'E' design suffix, cage, and clearance/preload class (CN/C3 or GA/GB). Note a 7-series bearing is not interchangeable with a same-size 6-series deep groove bearing — the contact angle changes how it carries axial load. Load ratings (dynamic Cr, static C0r) are intentionally NOT listed here: they vary by brand and internal design and are a safety-critical selection parameter — read them directly from the manufacturer catalog linked in the table above.
Where to buy a 7204
Compare current listings and prices for the 7204 across brands and sellers:
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FAQ
What bearings are equivalent to a 7204?
The 7204 is built to ISO 15 boundary dimensions 20×47×14 mm by SKF, NSK, FAG, NTN, KOYO, NACHI, Timken, INA. All share the same mounting envelope; match clearance, precision class and (where applicable) seal suffix before substituting.
What are the dimensions of a 7204 bearing?
Bore 20 mm, outer diameter 47 mm, B 14 mm (ISO 15).
Can I replace a 7204 with a different contact angle (A/B/C)?
No. The 7204 shares its 20×47×14 mm envelope across brands, but the contact-angle suffix (A≈30°, B≈40°, C≈15°) sets the axial load capacity and stiffness — a 7204B is not interchangeable with a 7204C. A single bearing also carries axial load in one direction only and is usually paired (DB/DF/DT); only universal-matching versions can be freely arranged. Match the angle, design suffix and preload class.
Related sizes
Boundary-dimension cross-reference only. Per the applicable ISO standard (ISO 15 for ball, ISO 355 for tapered), the boundary dimensions are common across brands, so the mounting envelope is interchangeable. This is NOT a drop-in part equivalence. Internal clearance, precision class, seal/shield type (where applicable), cage material and factory lubrication are encoded in brand-specific suffixes and must be matched separately. Always verify against the manufacturer's catalog before substituting.