6221-2RS
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What 6221-2RS means
| Code | Position | Meaning |
|---|---|---|
6 |
Type | Deep groove ball bearing |
2 |
Diameter series | Diameter series 2 (light): fixes OD and width for the bore (ISO 15) |
21 |
Bore | Bore code 21 × 5 = 105 mm |
2RS |
Closure | Contact rubber seals, both sides |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
6221-2RS specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 105 mm | 4.1339 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 190 mm | 7.4803 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 36 mm | 1.4173 in | ISO table for this designation, confirmed by supplier data |
| Bearing type | Deep groove ball bearing | Stated by the designation | |
| Seals / shields | Contact rubber seals, both sides | Stated by the designation | |
| Internal clearance | Normal (CN): no clearance code in the designation | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
Equivalent to / interchanges with
| Brand | Part number | Basis |
|---|---|---|
| SKF | 6221 2RSH | Brand suffix convention for this ISO size |
| TIMKEN | 6221 2RS | Brand suffix convention for this ISO size |
| FAG | 6221 2RSR | Brand suffix convention for this ISO size |
| NSK | 6221 DDU | Brand suffix convention for this ISO size |
| NTN | 6221 LLU | Brand suffix convention for this ISO size |
| KOYO | 6221 2RS | Brand suffix convention for this ISO size |
| NACHI | 6221 2NSE | Brand suffix convention for this ISO size |
Equivalents are dimensional and closure-for-closure: same bore, outside diameter, width, seals or shields and internal clearance. Bearing interchange tables
6221-2RS is a deep groove ball bearing, 105 mm bore × 190 mm OD × 36 mm wide (4.1339 × 7.4803 × 1.4173 in). It has rubber contact seals on both sides. Other makers sell the same size as SKF 6221 2RSH, TIMKEN 6221 2RS, FAG 6221 2RSR, NSK 6221 DDU.
The 6221-2RS is a deep groove ball bearing with 105mm bore diameter, 190mm outside diameter, and 36mm width. It features contact rubber seals on both sides (2RS designation) to retain lubrication and exclude contaminants in normal operating environments.
