30317-A Single Row Tapered Roller Bearing 85x180x44.5mm Heavy Load For Truck Axle Construction Machinery
30317-A is a metric single-row tapered roller bearing with optimized internal structure, sized 85×180×44.5mm. Featuring a large contact angle and separable inner and outer rings, it superbly sustains heavy radial and one-way axial combined loads. Crafted from premium GCr15 bearing steel, it boasts outstanding rigidity, wear resistance and stable running performance. Widely adopted for heavy truck axles, wheel hubs, gearboxes, construction and agricultural machinery under severe heavy-load working environments.
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| Item | Specifiion |
|---|---|
| Model | 30317-A (Improved internal structure, interchangeable with standard 30317) |
| Bearing Type | Single Row Tapered Roller Bearing |
| Inner Diameter (d) | 85 mm |
| Outer Diameter (D) | 180 mm |
| Total Assembly Width (T) | 44.5 mm |
| Inner Ring Width (B) | 41 mm |
| Outer Ring Width (C) | 34 mm |
| Dynamic Load Rating (Cr) | 310 kN |
| Static Load Rating (C0r) | 375 kN |
| Weight | 4.94 kg |
| Reference Speed | 3100 r/min |
| Limiting Speed | 4050 r/min |
| Structure | Separable cone & cup |
| Material | GCr15 Chrome Bearing Steel |
| Seal | Open Type |
| Precision Grade | P0 |
| Temperature Range | -40℃ ~ 120℃ |
| Feature Mark A | Optimized internal geometry, higher load capacity & rigidity |
- Optimized A-type internal structure provides higher rigidity and stronger load capacity than standard 30317.
- Large contact angle design excellently bears heavy radial and unidirectional axial combined loads.
- Separable cone and cup structure enables easy installation, disassembly and clearance adjustment.
- Made of high-purity chrome bearing steel with low friction, high wear resistance and long service life.
- Stable rotating performance, suitable for heavy-load and harsh working conditions.
- 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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