NSK 6409 Bearing — Specifications, Dimensions & Cross-Reference
The NSK 6409 is a deep groove ball bearing manufactured by NSK. It belongs to the 6400 series and features dimensions of 45 × 120 × 29 mm (bore × OD × width). This bearing has a dynamic load rating of 76,100 N and a static load rating of 42,500 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 45 mm |
| Outside Diameter (D) | 120 mm |
| Width (B) | 29 mm |
| Weight | 1.42 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 76,100 N |
| Static Load Rating (C₀r) | 42,500 N |
| Limiting Speed (Grease) | 5,600 rpm |
| Limiting Speed (Oil) | 7,000 rpm |
Brand Cross-Reference — 6409 Equivalents
The following bearings from other manufacturers are interchangeable with the NSK 6409. All share identical dimensions (45×120×29mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NSK | NSK 6409 ✦ | 76,100 | 42,500 |
| Timken | Timken 6409 | 76,100 | 42,500 |
| SKF | SKF 6409 | 76,100 | 42,500 |
| NTN | NTN 6409 | 76,100 | 42,500 |
| NACHI | NACHI 6409 | 76,100 | 42,500 |
| KOYO | KOYO 6409 | 76,100 | 42,500 |
| FAG | FAG 6409 | 76,100 | 42,500 |
| Timken | Timken 6409 | 76,100 | 42,500 |
| NTN | NTN 6409 | 76,100 | 42,500 |
| SKF | SKF 6409 | 76,100 | 42,500 |
Available Variants
The NSK 6409 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NSK 6409?
The NSK 6409 has a bore diameter of 45mm, outside diameter of 120mm, and width of 29mm. It weighs 1.42kg.
What is the load capacity of the NSK 6409?
The dynamic load rating (Cr) is 76,100 N and the static load rating (C₀r) is 42,500 N. The maximum recommended speed is 5,600 rpm with grease lubrication or 7,000 rpm with oil lubrication.
What bearings are equivalent to NSK 6409?
The 6409 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 45×120×29mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.