30310JR KOYO Tapered Roller Bearing Gearbox Drive Axle Spare Parts
30310JR is a high-performance tapered roller bearing manufactured by KOYO. Made of premium alloy steel, it features high load capacity, low friction and excellent wear resistance. Designed for heavy-duty applications, it runs stably under harsh working conditions, ensuring long service life. Widely used in excavators, loaders, trucks, gearboxes and drive axles. Strict quality control guarantees reliable performance. Ideal replacement spare part for construction, mining and automotive machinery.
| Item | Details |
|---|---|
| Part Number | 30310JR |
| Brand | KOYO |
| Type | Tapered Roller Bearing |
| Material | High Grade Bearing Steel |
| Size | 50*110*29.25 mm |
| Application | Excavator, Loader, Truck, Construction Machinery |
| Feature | Heavy Duty, High Load Capacity |
| Part Number | Bore (d, mm) | Outer Diameter (D, mm) | Width (T, mm) |
|---|---|---|---|
| 30304JR | 20 | 52 | 16.25 |
| 30305JR | 25 | 62 | 18.25 |
| 30306JR | 30 | 72 | 20.75 |
| 30307JR | 35 | 80 | 22.75 |
| 30308JR | 40 | 90 | 25.25 |
| 30309JR | 45 | 100 | 27.25 |
| 30310JR | 50 | 110 | 29.25 |
| 30311JR | 55 | 120 | 31.50 |
| 30312JR | 60 | 130 | 33.50 |
| 30313JR | 65 | 140 | 36.00 |
| 30314JR | 70 | 150 | 38.00 |
| 30315JR | 75 | 160 | 40.00 |
- Premium Quality
All bearings are made of high-grade alloy steel, processed by precision technology. They run stably under heavy-duty working conditions, with excellent anti-wear and shock resistance performance.
- Wide Compatibility
Complete range of 303 series bearings, standard size for direct OEM replacement, compatible with most excavators, loaders and engineering equipment.
- Trustworthy Service
Strict quality control before shipment. We support bulk order and fast delivery. Professional team provides effective technical support all the time.
- Q: Is this bearing a standard replacement part?
A: Yes. It is manufactured per standard specifications, easy to install and fits perfectly for replacement.
- Q: What equipment can this bearing be used for?
A: It is suitable for excavators, loaders, gearboxes, drive axles and other construction machinery.
- Q: What are the main advantages of this product?
A: Made of high-quality alloy steel, it features strong load capacity, good wear resistance and long service life.
- Q: Do you have other models in the same series?
A: We provide complete 4T series bearings and related spare parts. Feel free to contact us for details.
- Q: How about your product quality?
A: All items go through strict inspection before delivery to ensure reliable performance.
- Q: How long will you arrange the shipment?
A: Goods can be shipped within 1-3 working days once payment is confirmed.
- Q: Can I get a sample first?
A: Sample orders are available. Please contact us to discuss relevant details.
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