21309-C3
Tier-one manufacturer — brand supplied may vary ✓ Bore checked against the ISO tableRegular price
$79.95 USD
Regular price
Sale price
$79.95 USD
Unit price
per
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Bore45 mm
1.7717 in
Outside dia.100 mm
3.937 in
Width25 mm
0.9843 in
TypeSpherical roller bearing
SealingOpen
ClearanceC3
Ships separately from our European warehouse — shipping from $79, quoted at checkout
Ships from our European partner stock — allow 5–8 business days
Ships from our European partner stock — allow 5–8 business days
Image is for illustration purposes only.
What 21309-C3 means
| Code | Position | Meaning |
|---|---|---|
2 |
Type | Spherical roller bearing |
1 |
Width series | Width series 1 |
3 |
Diameter series | Diameter series 3 (medium) |
09 |
Bore | Bore code 09 × 5 = 45 mm |
C3 |
Internal clearance | C3: radial internal clearance greater than Normal |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
21309-C3 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 | Supplier catalogue listing |
| Width (B) | 25 mm | 0.9843 in | Supplier catalogue listing |
| Bearing type | Spherical roller bearing | Stated by the designation | |
| Seals / shields | Open (no seals or shields) | Stated by the designation | |
| Internal clearance | C3 (greater than Normal) | 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 | |
21309-C3 is a spherical roller bearing, 45 mm bore × 100 mm OD × 25 mm wide (1.7717 × 3.937 × 0.9843 in). It has C3 internal clearance.
The 21309-C3 is a spherical roller bearing with a 45 mm bore diameter from the 213 series, featuring C3 radial clearance for applications requiring greater internal clearance than standard. Spherical roller bearings use barrel-shaped rollers running on a common spherical outer ring raceway, providing self-aligning capability to accommodate shaft misalignment and deflection.
Inner Diameter (ID)
45 mm
Series
213
Bearing Type
Spherical roller bearing
