21316K-C3
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What 21316K-C3 means
| Code | Position | Meaning |
|---|---|---|
2 |
Type | Spherical roller bearing |
1 |
Width series | Width series 1 |
3 |
Diameter series | Diameter series 3 (medium) |
16 |
Bore | Bore code 16 × 5 = 80 mm |
K |
Bore type | Tapered bore, taper 1:12 (mounts on an adapter or withdrawal sleeve) |
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.
21316K-C3 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 80 mm | 3.1496 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 170 mm | 6.6929 in | Supplier catalogue listing |
| Width (B) | 39 mm | 1.5354 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 | Tapered bore (1:12) | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
21316K-C3 is a spherical roller bearing, 80 mm bore × 170 mm OD × 39 mm wide (3.1496 × 6.6929 × 1.5354 in). It has C3 internal clearance and a tapered bore (1:12).
The 21316K-C3 is a spherical roller bearing with an 80 mm tapered bore (1:12 taper) and C3 radial internal clearance. The tapered bore design allows direct mounting onto tapered shafts or adapter sleeves, while the C3 clearance provides greater operating clearance than standard to accommodate thermal expansion or interference fit conditions.
