NTN 7208-NR Bearing — Specifications, Dimensions & Cross-Reference
The NTN 7208-NR is a angular contact ball bearing with snap ring groove manufactured by NTN. It belongs to the 7200 series and features dimensions of 40 × 80 × 18 mm (bore × OD × width). This bearing has a dynamic load rating of 30,700 N and a static load rating of 19,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 40 mm |
| Outside Diameter (D) | 80 mm |
| Width (B) | 18 mm |
| Weight | 0.356 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 30,700 N |
| Static Load Rating (C₀r) | 19,000 N |
| Limiting Speed (Grease) | 8,500 rpm |
| Limiting Speed (Oil) | 10,000 rpm |
Brand Cross-Reference — 7208-NR Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 7208-NR. All share identical dimensions (40×80×18mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 7208-NR ✦ | 30,700 | 19,000 |
| SKF | SKF 7208-NR | 30,700 | 19,000 |
| NTN | NTN 7208-NR | 30,700 | 19,000 |
| KOYO | KOYO 7208-NR | 30,700 | 19,000 |
| FAG | FAG 7208-NR | 30,700 | 19,000 |
| NACHI | NACHI 7208-NR | 30,700 | 19,000 |
| Timken | Timken 7208-NR | 30,700 | 19,000 |
| NSK | NSK 7208-NR | 30,700 | 19,000 |
| SKF | SKF 7208-NR | 30,700 | 19,000 |
Available Variants
The NTN 7208 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 7208-NR?
The NTN 7208-NR has a bore diameter of 40mm, outside diameter of 80mm, and width of 18mm. It weighs 0.356kg.
What is the load capacity of the NTN 7208-NR?
The dynamic load rating (Cr) is 30,700 N and the static load rating (C₀r) is 19,000 N. The maximum recommended speed is 8,500 rpm with grease lubrication or 10,000 rpm with oil lubrication.
What bearings are equivalent to NTN 7208-NR?
The 7208-NR is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 40×80×18mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.