NTN 6405 Bearing — Specifications, Dimensions & Cross-Reference
The NTN 6405 is a deep groove ball bearing manufactured by NTN. It belongs to the 6400 series and features dimensions of 25 × 80 × 21 mm (bore × OD × width). This bearing has a dynamic load rating of 35,800 N and a static load rating of 19,300 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 25 mm |
| Outside Diameter (D) | 80 mm |
| Width (B) | 21 mm |
| Weight | 0.54 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 35,800 N |
| Static Load Rating (C₀r) | 19,300 N |
| Limiting Speed (Grease) | 8,500 rpm |
| Limiting Speed (Oil) | 11,000 rpm |
Brand Cross-Reference — 6405 Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 6405. All share identical dimensions (25×80×21mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 6405 ✦ | 35,800 | 19,300 |
| Timken | Timken 6405 | 35,800 | 19,300 |
| SKF | SKF 6405 | 35,800 | 19,300 |
| NACHI | NACHI 6405 | 35,800 | 19,300 |
| KOYO | KOYO 6405 | 35,800 | 19,300 |
| FAG | FAG 6405 | 35,800 | 19,300 |
| Timken | Timken 6405 | 35,800 | 19,300 |
| NSK | NSK 6405 | 35,800 | 19,300 |
| NTN | NTN 6405 | 35,800 | 19,300 |
| SKF | SKF 6405 | 35,800 | 19,300 |
Available Variants
The NTN 6405 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 6405?
The NTN 6405 has a bore diameter of 25mm, outside diameter of 80mm, and width of 21mm. It weighs 0.54kg.
What is the load capacity of the NTN 6405?
The dynamic load rating (Cr) is 35,800 N and the static load rating (C₀r) is 19,300 N. The maximum recommended speed is 8,500 rpm with grease lubrication or 11,000 rpm with oil lubrication.
What bearings are equivalent to NTN 6405?
The 6405 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 25×80×21mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.