NJ313-C4
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What NJ313-C4 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) |
13 |
Bore | Bore code 13 × 5 = 65 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.
NJ313-C4 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 65 mm | 2.5591 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 140 mm | 5.5118 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 33 mm | 1.2992 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 | C4 (greater than C3) | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
NJ313-C4 is a cylindrical roller bearing, 65 mm bore × 140 mm OD × 33 mm wide (2.5591 × 5.5118 × 1.2992 in). It has C4 internal clearance.
The NJ313-C4 is a cylindrical roller bearing with 65mm bore diameter, 140mm outside diameter, and 33mm width. This single-row bearing features a separable design with an outer ring flanges and inner ring without flanges, allowing for axial displacement and accommodating thermal expansion in the shaft assembly. The C4 radial clearance specification provides greater internal clearance than standard, suitable for applications with thermal growth or interference fits.
