N308
Tier-one manufacturer — brand supplied may vary ✓ Dimensions checked: ISO table and supplier data agreeCouldn't load pickup availability
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What N308 means
| Code | Position | Meaning |
|---|---|---|
N |
Type | Cylindrical roller bearing, type N: two flanges on the inner ring, none on the outer ring |
3 |
Diameter series | Diameter series 3 (medium) |
08 |
Bore | Bore code 08 × 5 = 40 mm |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
N308 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 40 mm | 1.5748 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 90 mm | 3.5433 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 23 mm | 0.9055 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 | Normal (CN): no clearance code in the designation | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
Equivalent to / interchanges with
Also listed in manufacturer interchange tables (2): confirm suffix codes before ordering
- SKF N308-ECP (SKF Master Interchange)
- TIMKEN N308LOB (Timken Interchange Guide)
These carry maker-specific suffix codes (cage, lubrication groove, design) that we have not matched one-for-one. The size is the same; check the codes against your application.
Equivalents are dimensional and closure-for-closure: same bore, outside diameter, width, seals or shields and internal clearance. Bearing interchange tables
N308 is a cylindrical roller bearing, 40 mm bore × 90 mm OD × 23 mm wide (1.5748 × 3.5433 × 0.9055 in).
The N308 is a single-row cylindrical roller bearing with dimensions of 40mm bore, 90mm outside diameter, and 23mm width. Cylindrical roller bearings use cylindrical rolling elements to provide high radial load capacity and allow for axial displacement of the shaft relative to the housing.
