6309-C4
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What 6309-C4 means
| Code | Position | Meaning |
|---|---|---|
6 |
Type | Deep groove ball bearing |
3 |
Diameter series | Diameter series 3 (medium): fixes OD and width for the bore (ISO 15) |
09 |
Bore | Bore code 09 × 5 = 45 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.
6309-C4 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 45 mm | 1.7717 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 100 mm | 3.937 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 25 mm | 0.9843 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 | 6309 C4 | Brand suffix convention for this ISO size |
| TIMKEN | 6309 C4 | Brand suffix convention for this ISO size |
| FAG | 6309 C4 | Brand suffix convention for this ISO size |
| NSK | 6309 C4 | Brand suffix convention for this ISO size |
| NTN | 6309 C4 | Brand suffix convention for this ISO size |
| KOYO | 6309 C4 | Brand suffix convention for this ISO size |
| NACHI | 6309 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
6309-C4 is a deep groove ball bearing, 45 mm bore × 100 mm OD × 25 mm wide (1.7717 × 3.937 × 0.9843 in). It has no seals or shields (open) and C4 internal clearance. Other makers sell the same size as SKF 6309 C4, TIMKEN 6309 C4, FAG 6309 C4, NSK 6309 C4.
The 6309-C4 is a single-row deep groove ball bearing with a 45mm bore, 100mm outside diameter, and 25mm width. This bearing features C4 radial internal clearance, providing greater clearance than standard C3, which accommodates thermal expansion and shaft deflection in operating conditions.
