NTN 6911 Bearing — Specifications, Dimensions & Cross-Reference
The NTN 6911 is a deep groove ball bearing manufactured by NTN. It belongs to the 6900 series and features dimensions of 55 × 80 × 13 mm (bore × OD × width). This bearing has a dynamic load rating of 14,300 N and a static load rating of 11,200 N, making it suitable for medium-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 55 mm |
| Outside Diameter (D) | 80 mm |
| Width (B) | 13 mm |
| Weight | 0.130 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 14,300 N |
| Static Load Rating (C₀r) | 11,200 N |
| Limiting Speed (Grease) | 8,000 rpm |
| Limiting Speed (Oil) | 11,000 rpm |
Brand Cross-Reference — 6911 Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 6911. All share identical dimensions (55×80×13mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 6911 ✦ | 14,300 | 11,200 |
| Timken | Timken 6911 | 14,300 | 11,200 |
| SKF | SKF 6911 | 14,300 | 11,200 |
| KOYO | KOYO 6911 | 14,300 | 11,200 |
| FAG | FAG 6911 | 14,300 | 11,200 |
| NACHI | NACHI 6911 | 14,300 | 11,200 |
| Timken | Timken 6911 | 14,300 | 11,200 |
| NSK | NSK 6911 | 14,300 | 11,200 |
| NTN | NTN 6911 | 14,300 | 11,200 |
| SKF | SKF 6911 | 14,300 | 11,200 |
Available Variants
The NTN 6911 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 6911?
The NTN 6911 has a bore diameter of 55mm, outside diameter of 80mm, and width of 13mm. It weighs 0.130kg.
What is the load capacity of the NTN 6911?
The dynamic load rating (Cr) is 14,300 N and the static load rating (C₀r) is 11,200 N. The maximum recommended speed is 8,000 rpm with grease lubrication or 11,000 rpm with oil lubrication.
What bearings are equivalent to NTN 6911?
The 6911 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 55×80×13mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.