SKF 6318 Bearing — Specifications, Dimensions & Cross-Reference
The SKF 6318 is a deep groove ball bearing manufactured by SKF. It belongs to the 6300 series and features dimensions of 90 × 190 × 43 mm (bore × OD × width). This bearing has a dynamic load rating of 143,000 N and a static load rating of 108,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 90 mm |
| Outside Diameter (D) | 190 mm |
| Width (B) | 43 mm |
| Weight | 4.490 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 143,000 N |
| Static Load Rating (C₀r) | 108,000 N |
| Limiting Speed (Grease) | 3,400 rpm |
| Limiting Speed (Oil) | 4,000 rpm |
Brand Cross-Reference — 6318 Equivalents
The following bearings from other manufacturers are interchangeable with the SKF 6318. All share identical dimensions (90×190×43mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| SKF | SKF 6318 ✦ | 143,000 | 108,000 |
| Timken | Timken 6318 | 143,000 | 108,000 |
| SKF | SKF 6318 | 143,000 | 108,000 |
| NTN | NTN 6318 | 143,000 | 108,000 |
| NACHI | NACHI 6318 | 143,000 | 108,000 |
| KOYO | KOYO 6318 | 143,000 | 108,000 |
| FAG | FAG 6318 | 143,000 | 108,000 |
| Timken | Timken 6318 | 143,000 | 108,000 |
| NSK | NSK 6318 | 143,000 | 108,000 |
| NTN | NTN 6318 | 143,000 | 108,000 |
Available Variants
The SKF 6318 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the SKF 6318?
The SKF 6318 has a bore diameter of 90mm, outside diameter of 190mm, and width of 43mm. It weighs 4.490kg.
What is the load capacity of the SKF 6318?
The dynamic load rating (Cr) is 143,000 N and the static load rating (C₀r) is 108,000 N. The maximum recommended speed is 3,400 rpm with grease lubrication or 4,000 rpm with oil lubrication.
What bearings are equivalent to SKF 6318?
The 6318 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 90×190×43mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.