KOYO 6411 Bearing — Specifications, Dimensions & Cross-Reference
The KOYO 6411 is a deep groove ball bearing manufactured by KOYO. It belongs to the 6400 series and features dimensions of 55 × 140 × 33 mm (bore × OD × width). This bearing has a dynamic load rating of 104,000 N and a static load rating of 60,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 55 mm |
| Outside Diameter (D) | 140 mm |
| Width (B) | 33 mm |
| Weight | 2.04 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 104,000 N |
| Static Load Rating (C₀r) | 60,000 N |
| Limiting Speed (Grease) | 4,800 rpm |
| Limiting Speed (Oil) | 6,000 rpm |
Brand Cross-Reference — 6411 Equivalents
The following bearings from other manufacturers are interchangeable with the KOYO 6411. All share identical dimensions (55×140×33mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| KOYO | KOYO 6411 ✦ | 104,000 | 60,000 |
| Timken | Timken 6411 | 104,000 | 60,000 |
| SKF | SKF 6411 | 104,000 | 60,000 |
| NTN | NTN 6411 | 104,000 | 60,000 |
| NACHI | NACHI 6411 | 104,000 | 60,000 |
| FAG | FAG 6411 | 104,000 | 60,000 |
| Timken | Timken 6411 | 104,000 | 60,000 |
| NSK | NSK 6411 | 104,000 | 60,000 |
| NTN | NTN 6411 | 104,000 | 60,000 |
| SKF | SKF 6411 | 104,000 | 60,000 |
Available Variants
The KOYO 6411 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the KOYO 6411?
The KOYO 6411 has a bore diameter of 55mm, outside diameter of 140mm, and width of 33mm. It weighs 2.04kg.
What is the load capacity of the KOYO 6411?
The dynamic load rating (Cr) is 104,000 N and the static load rating (C₀r) is 60,000 N. The maximum recommended speed is 4,800 rpm with grease lubrication or 6,000 rpm with oil lubrication.
What bearings are equivalent to KOYO 6411?
The 6411 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 55×140×33mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.