NACHI 7204 Bearing — Specifications, Dimensions & Cross-Reference
The NACHI 7204 is a angular contact ball bearing manufactured by NACHI. It belongs to the 7200 series and features dimensions of 20 × 47 × 14 mm (bore × OD × width). This bearing has a dynamic load rating of 12,700 N and a static load rating of 6,550 N, making it suitable for medium-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 20 mm |
| Outside Diameter (D) | 47 mm |
| Width (B) | 14 mm |
| Weight | 0.106 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 12,700 N |
| Static Load Rating (C₀r) | 6,550 N |
| Limiting Speed (Grease) | 15,000 rpm |
| Limiting Speed (Oil) | 18,000 rpm |
Brand Cross-Reference — 7204 Equivalents
The following bearings from other manufacturers are interchangeable with the NACHI 7204. All share identical dimensions (20×47×14mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NACHI | NACHI 7204 ✦ | 12,700 | 6,550 |
| Timken | Timken 7204 | 12,700 | 6,550 |
| SKF | SKF 7204 | 12,700 | 6,550 |
| NTN | NTN 7204 | 12,700 | 6,550 |
| KOYO | KOYO 7204 | 12,700 | 6,550 |
| FAG | FAG 7204 | 12,700 | 6,550 |
| Timken | Timken 7204 | 12,700 | 6,550 |
| NSK | NSK 7204 | 12,700 | 6,550 |
| NTN | NTN 7204 | 12,700 | 6,550 |
| SKF | SKF 7204 | 12,700 | 6,550 |
Available Variants
The NACHI 7204 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NACHI 7204?
The NACHI 7204 has a bore diameter of 20mm, outside diameter of 47mm, and width of 14mm. It weighs 0.106kg.
What is the load capacity of the NACHI 7204?
The dynamic load rating (Cr) is 12,700 N and the static load rating (C₀r) is 6,550 N. The maximum recommended speed is 15,000 rpm with grease lubrication or 18,000 rpm with oil lubrication.
What bearings are equivalent to NACHI 7204?
The 7204 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.