NTN 6809 Bearing — Specifications, Dimensions & Cross-Reference
The NTN 6809 is a deep groove ball bearing manufactured by NTN. It belongs to the 6800 series and features dimensions of 45 × 58 × 7 mm (bore × OD × width). This bearing has a dynamic load rating of 3,600 N and a static load rating of 3,000 N, making it suitable for light-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 45 mm |
| Outside Diameter (D) | 58 mm |
| Width (B) | 7 mm |
| Weight | 0.033 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 3,600 N |
| Static Load Rating (C₀r) | 3,000 N |
| Limiting Speed (Grease) | 12,000 rpm |
| Limiting Speed (Oil) | 16,000 rpm |
Brand Cross-Reference — 6809 Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 6809. All share identical dimensions (45×58×7mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 6809 ✦ | 3,600 | 3,000 |
| Timken | Timken 6809 | 3,600 | 3,000 |
| SKF | SKF 6809 | 3,600 | 3,000 |
| NTN | NTN 6809 | 3,600 | 3,000 |
| NACHI | NACHI 6809 | 3,600 | 3,000 |
| KOYO | KOYO 6809 | 3,600 | 3,000 |
| FAG | FAG 6809 | 3,600 | 3,000 |
| Timken | Timken 6809 | 3,600 | 3,000 |
| NSK | NSK 6809 | 3,600 | 3,000 |
| SKF | SKF 6809 | 3,600 | 3,000 |
Available Variants
The NTN 6809 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 6809?
The NTN 6809 has a bore diameter of 45mm, outside diameter of 58mm, and width of 7mm. It weighs 0.033kg.
What is the load capacity of the NTN 6809?
The dynamic load rating (Cr) is 3,600 N and the static load rating (C₀r) is 3,000 N. The maximum recommended speed is 12,000 rpm with grease lubrication or 16,000 rpm with oil lubrication.
What bearings are equivalent to NTN 6809?
The 6809 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 45×58×7mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.