NU209K-C3
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What NU209K-C3 means
| Code | Position | Meaning |
|---|---|---|
NU |
Type | Cylindrical roller bearing, type NU: two flanges on the outer ring, none on the inner ring (inner ring can float axially) |
2 |
Diameter series | Diameter series 2 (light) |
09 |
Bore | Bore code 09 × 5 = 45 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.
NU209K-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) | 85 mm | 3.3465 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 19 mm | 0.748 in | ISO table for this designation, confirmed by supplier data |
| Bearing type | Cylindrical 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 | |
NU209K-C3 is a cylindrical roller bearing, 45 mm bore × 85 mm OD × 19 mm wide (1.7717 × 3.3465 × 0.748 in). It has C3 internal clearance and a tapered bore (1:12).
The NU209K-C3 is a single-row cylindrical roller bearing with a 45mm tapered bore (1:12), 85mm outside diameter, and 19mm width. The tapered bore design allows mounting directly onto tapered shafts or standard shafts using adapter sleeves. C3 radial clearance provides greater internal clearance than normal, accommodating thermal expansion and misalignment in operating conditions.
