Timken 6321 Bearing — Specifications, Dimensions & Cross-Reference
The Timken 6321 is a deep groove ball bearing manufactured by Timken. It belongs to the 6300 series and features dimensions of 105 × 225 × 49 mm (bore × OD × width). This bearing has a dynamic load rating of 182,000 N and a static load rating of 153,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 105 mm |
| Outside Diameter (D) | 225 mm |
| Width (B) | 49 mm |
| Weight | 7.200 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 182,000 N |
| Static Load Rating (C₀r) | 153,000 N |
| Limiting Speed (Grease) | 2,800 rpm |
| Limiting Speed (Oil) | 3,400 rpm |
Brand Cross-Reference — 6321 Equivalents
The following bearings from other manufacturers are interchangeable with the Timken 6321. All share identical dimensions (105×225×49mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| Timken | Timken 6321 ✦ | 182,000 | 153,000 |
| Timken | Timken 6321 | 182,000 | 153,000 |
| SKF | SKF 6321 | 182,000 | 153,000 |
| NTN | NTN 6321 | 182,000 | 153,000 |
| NACHI | NACHI 6321 | 182,000 | 153,000 |
| KOYO | KOYO 6321 | 182,000 | 153,000 |
| FAG | FAG 6321 | 182,000 | 153,000 |
| NSK | NSK 6321 | 182,000 | 153,000 |
| NTN | NTN 6321 | 182,000 | 153,000 |
| SKF | SKF 6321 | 182,000 | 153,000 |
Available Variants
The Timken 6321 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the Timken 6321?
The Timken 6321 has a bore diameter of 105mm, outside diameter of 225mm, and width of 49mm. It weighs 7.200kg.
What is the load capacity of the Timken 6321?
The dynamic load rating (Cr) is 182,000 N and the static load rating (C₀r) is 153,000 N. The maximum recommended speed is 2,800 rpm with grease lubrication or 3,400 rpm with oil lubrication.
What bearings are equivalent to Timken 6321?
The 6321 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 105×225×49mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.