NACHI 1204 Bearing — Specifications, Dimensions & Cross-Reference
The NACHI 1204 is a self-aligning ball bearing manufactured by NACHI. It belongs to the 1200 series and features dimensions of 20 × 47 × 14 mm (bore × OD × width). This bearing has a dynamic load rating of 9,360 N and a static load rating of 3,100 N, making it suitable for light-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 20 mm |
| Outside Diameter (D) | 47 mm |
| Width (B) | 14 mm |
| Weight | 0.094 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 9,360 N |
| Static Load Rating (C₀r) | 3,100 N |
| Limiting Speed (Grease) | 13,000 rpm |
| Limiting Speed (Oil) | 17,000 rpm |
Brand Cross-Reference — 1204 Equivalents
The following bearings from other manufacturers are interchangeable with the NACHI 1204. All share identical dimensions (20×47×14mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NACHI | NACHI 1204 ✦ | 9,360 | 3,100 |
| Timken | Timken 1204 | 9,360 | 3,100 |
| SKF | SKF 1204 | 9,360 | 3,100 |
| KOYO | KOYO 1204 | 9,360 | 3,100 |
| Timken | Timken 1204 | 9,360 | 3,100 |
| FAG | FAG 1204 | 9,360 | 3,100 |
| NSK | NSK 1204 | 9,360 | 3,100 |
| NTN | NTN 1204 | 9,360 | 3,100 |
| SKF | SKF 1204 | 9,360 | 3,100 |
Available Variants
The NACHI 1204 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NACHI 1204?
The NACHI 1204 has a bore diameter of 20mm, outside diameter of 47mm, and width of 14mm. It weighs 0.094kg.
What is the load capacity of the NACHI 1204?
The dynamic load rating (Cr) is 9,360 N and the static load rating (C₀r) is 3,100 N. The maximum recommended speed is 13,000 rpm with grease lubrication or 17,000 rpm with oil lubrication.
What bearings are equivalent to NACHI 1204?
The 1204 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 20×47×14mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.