NACHI 2204 Bearing — Specifications, Dimensions & Cross-Reference
The NACHI 2204 is a self-aligning ball bearing manufactured by NACHI. It belongs to the 2200 series and features dimensions of 20 × 47 × 18 mm (bore × OD × width). This bearing has a dynamic load rating of 12,700 N and a static load rating of 4,300 N, making it suitable for medium-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 20 mm |
| Outside Diameter (D) | 47 mm |
| Width (B) | 18 mm |
| Weight | 0.130 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 12,700 N |
| Static Load Rating (C₀r) | 4,300 N |
| Limiting Speed (Grease) | 11,000 rpm |
| Limiting Speed (Oil) | 14,000 rpm |
Brand Cross-Reference — 2204 Equivalents
The following bearings from other manufacturers are interchangeable with the NACHI 2204. All share identical dimensions (20×47×18mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NACHI | NACHI 2204 ✦ | 12,700 | 4,300 |
| Timken | Timken 2204 | 12,700 | 4,300 |
| SKF | SKF 2204 | 12,700 | 4,300 |
| KOYO | KOYO 2204 | 12,700 | 4,300 |
| Timken | Timken 2204 | 12,700 | 4,300 |
| FAG | FAG 2204 | 12,700 | 4,300 |
| NSK | NSK 2204 | 12,700 | 4,300 |
| SKF | SKF 2204 | 12,700 | 4,300 |
| NTN | NTN 2204 | 12,700 | 4,300 |
Available Variants
The NACHI 2204 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NACHI 2204?
The NACHI 2204 has a bore diameter of 20mm, outside diameter of 47mm, and width of 18mm. It weighs 0.130kg.
What is the load capacity of the NACHI 2204?
The dynamic load rating (Cr) is 12,700 N and the static load rating (C₀r) is 4,300 N. The maximum recommended speed is 11,000 rpm with grease lubrication or 14,000 rpm with oil lubrication.
What bearings are equivalent to NACHI 2204?
The 2204 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 20×47×18mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.