1204
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What 1204 means
| Code | Position | Meaning |
|---|---|---|
1 |
Type | Self-aligning ball bearing |
2 |
Diameter series | Diameter series 2 (light) |
04 |
Bore | Bore code 04 × 5 = 20 mm |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
1204 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 20 mm | 0.7874 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 47 mm | 1.8504 in | Supplier catalogue listing |
| Width (B) | 14 mm | 0.5512 in | Supplier catalogue listing |
| Bearing type | Self-aligning ball bearing | Stated by the designation | |
| Seals / shields | Open (no seals or shields) | Stated by the designation | |
| Internal clearance | Normal (CN): no clearance code in the designation | Stated by the designation | |
| Bore | Cylindrical (straight) bore | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
1204 is a self-aligning ball bearing, 20 mm bore × 47 mm OD × 14 mm wide (0.7874 × 1.8504 × 0.5512 in).
Self-aligning ball bearings feature a double-row design with a common spherical raceway in the outer ring, allowing the bearing to compensate for angular misalignment between the shaft and housing. The 1204 designation indicates a Series 12 bearing with a 20mm bore diameter.
Model Number: 1204
Bore/Inner Diameter Inch: 0.7874
Bore/Inner Diameter mm: 20
Outside Diameter Inch: 1.8504
Outside Diameter mm: 47
Width Inch: 0.5512
