30318-A Single Row Tapered Roller Bearing 90x190x46.5mm Heavy Load For Heavy Truck Axle Construction Machinery
30318-A is metric single-row tapered roller bearing with upgraded A-type internal geometry, overall dimension 90×190×46.5mm. With large contact angle and separable inner & outer rings, it efficiently bears heavy combined radial and one-way axial loads. Made of premium GCr15 bearing steel, it features outstanding rigidity, wear resistance and stable rotation performance, perfectly suited for heavy-duty vehicles, construction and agricultural machinery under harsh working conditions.
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| Item | Specifiion |
|---|---|
| Model | 30318-A |
| Bearing Type | Single Row Tapered Roller Bearing |
| Inner Diameter d | 90 mm |
| Outer Diameter D | 190 mm |
| Total Width T | 46.5 mm |
| Inner Ring Width B | 43 mm |
| Outer Ring Width C | 36 mm |
| Dynamic Load Cr | 330 kN |
| Static Load C0r | 395 kN |
| Weight | 5.56 kg |
| Reference Speed | 3050 r/min |
| Limiting Speed | 3850 r/min |
| Structure | Separable cone & cup |
| Mark A Meaning | Optimized internal structure, higher load & rigidity |
| Material | GCr15 Chrome Bearing Steel |
| Seal | Open Type |
| Precision Grade | P0 Standard |
| Temperature Range | -40℃ ~ 120℃ |
| Standard | DIN 720 / ISO 355 |
- A optimized internal design improves overall rigidity and load capacity compared with standard 30318
- Large contact angle design withstands heavy radial + unidirectional axial composite loads
- Separable cone and cup, convenient for installation, disassembly and clearance adjustment
- High purity chrome steel body, low friction, excellent wear resistance and long service life
- Stable running performance, adaptable to heavy-load, dusty and severe working environments
- Widely used in heavy-duty truck axles
- wheel hubs
- gearboxes
- construction machinery
- agricultural equipment and mining machinery transmission systems.
*Check matched bearing models to complete your mechanical assembly.
- 30 years professional bearing industry experience
- ISO certified strict quality inspection
- Flexible OEM & private label customization
- 3-5 days fast delivery for stocked bearings
- Full bearing series, universal interchangeable size
- Factory direct price & reliable after-sales service
*Contact us anytime for technical parameter consultation & selection guidance.
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