6021-C4
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What 6021-C4 means
| Code | Position | Meaning |
|---|---|---|
6 |
Type | Deep groove ball bearing |
0 |
Diameter series | Diameter series 0 (extra light): fixes OD and width for the bore (ISO 15) |
21 |
Bore | Bore code 21 × 5 = 105 mm |
C4 |
Internal clearance | C4: radial internal clearance greater than C3 |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
6021-C4 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 105 mm | 4.1339 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 160 mm | 6.2992 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 26 mm | 1.0236 in | ISO table for this designation, confirmed by supplier data |
| Bearing type | Deep groove ball bearing | Stated by the designation | |
| Seals / shields | Open (no seals or shields) | Stated by the designation | |
| Internal clearance | C4 (greater than C3) | 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 | 6021 C4 | Brand suffix convention for this ISO size |
| TIMKEN | 6021 C4 | Brand suffix convention for this ISO size |
| FAG | 6021 C4 | Brand suffix convention for this ISO size |
| NSK | 6021 C4 | Brand suffix convention for this ISO size |
| NTN | 6021 C4 | Brand suffix convention for this ISO size |
| KOYO | 6021 C4 | Brand suffix convention for this ISO size |
| NACHI | 6021 C4 | 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
6021-C4 is a deep groove ball bearing, 105 mm bore × 160 mm OD × 26 mm wide (4.1339 × 6.2992 × 1.0236 in). It has no seals or shields (open) and C4 internal clearance. Other makers sell the same size as SKF 6021 C4, TIMKEN 6021 C4, FAG 6021 C4, NSK 6021 C4.
The 6021-C4 is a deep groove ball bearing with a 105mm bore diameter, 160mm outside diameter, and 26mm width. The C4 designation indicates a radial internal clearance greater than C3, providing increased clearance for applications with thermal expansion or shaft-housing misalignment.
