1211
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What 1211 means
| Code | Position | Meaning |
|---|---|---|
1 |
Type | Self-aligning ball bearing |
2 |
Diameter series | Diameter series 2 (light) |
11 |
Bore | Bore code 11 × 5 = 55 mm |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
1211 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 55 mm | 2.1654 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 100 mm | 3.937 in | Supplier catalogue listing |
| Width (B) | 21 mm | 0.8268 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 | |
Equivalent to / interchanges with
Also listed in manufacturer interchange tables (1): confirm suffix codes before ordering
- TIMKEN 1211AG (Timken Interchange Guide)
These carry maker-specific suffix codes (cage, lubrication groove, design) that we have not matched one-for-one. The size is the same; check the codes against your application.
Equivalents are dimensional and closure-for-closure: same bore, outside diameter, width, seals or shields and internal clearance. Bearing interchange tables
1211 is a self-aligning ball bearing, 55 mm bore × 100 mm OD × 21 mm wide (2.1654 × 3.937 × 0.8268 in).
The 1211 is a self-aligning ball bearing with a 55mm bore diameter from the 12 series. Self-aligning ball bearings feature two rows of balls running on a spherical outer ring raceway, allowing the bearing to accommodate angular misalignment between the shaft and housing.
Model Number: 1211
Bore/Inner Diameter Inch: 2.1654
Bore/Inner Diameter mm: 55
Outside Diameter Inch: 3.937
Outside Diameter mm: 100
Width Inch: 0.8268
