NJ318-C3
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What NJ318-C3 means
| Code | Position | Meaning |
|---|---|---|
NJ |
Type | Cylindrical roller bearing, type NJ: two flanges on the outer ring, one on the inner ring (locates in one direction) |
3 |
Diameter series | Diameter series 3 (medium) |
18 |
Bore | Bore code 18 × 5 = 90 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.
NJ318-C3 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 90 mm | 3.5433 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 190 mm | 7.4803 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 43 mm | 1.6929 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 | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
NJ318-C3 is a cylindrical roller bearing, 90 mm bore × 190 mm OD × 43 mm wide (3.5433 × 7.4803 × 1.6929 in). It has C3 internal clearance.
The NJ318-C3 is a cylindrical roller bearing with a 90mm bore diameter, 190mm outside diameter, and 43mm width. This single-row bearing features the NJ design with two integral ribs on the outer ring and one rib on the inner ring, allowing for axial displacement in one direction. The C3 designation indicates greater than normal internal radial clearance for applications with thermal expansion or interference fit requirements.
