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Help CenterTapered Roller Bearing 30208, Single Row, Heavy‑duty Agricultural Machinery Roller Bearing
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Henan San Kuang Machinery Technology Co., Ltd., established in 2014 with a factory area of 10,000–30,000 square meters, is a professional manufacturer of high-quality bearings. Our 30208 Single Row Tapered Roller Bearing is specifically engineered for heavy-duty agricultural machinery, delivering reliable performance under harsh operating conditions. With a team of 51–100 experienced employees and annual export value of US$2.5–5 million, we ensure each bearing meets rigorous quality standards. This bearing combines strong load capacity, low friction, and long service life, making it the ideal choice for tractors, harvesters, and other farm equipment.
Key Features & Technical Specifications
| Parameter | Value |
| Bore Diameter (d) | 40 mm |
| Outside Diameter (D) | 80 mm |
| Width (B) | 19.75 mm |
| Dynamic Load Rating (C) | 63.0 kN |
| Static Load Rating (C0) | 72.0 kN |
| Limiting Speed (Grease) | 5,000 rpm |
| Weight | 0.36 kg |
- Single Row Design – Optimized for combined radial and axial loads, common in agricultural transmissions and wheel hubs.
- Heavy-Duty Construction – Made from high-grade chrome steel (GCr15) with precise heat treatment, ensuring durability under shock loads.
- Interchangeable Cup & Cone – Facilitates easy assembly and replacement; matches standard ISO 355 dimensions.
- Low Friction Torque – Tapered rollers reduce sliding friction, improving energy efficiency and reducing heat generation.
- Sealed or Open Options – Available with rubber seals or metal shields for contamination protection; open version for high-speed applications.
- Customizable Clearance – Offers C0 (normal), C2, or C3 clearance to suit different operating conditions.
Benefits for Your Agricultural Machinery
By using the 30208 tapered roller bearing, your equipment gains longer maintenance intervals, reduced downtime, and improved reliability in dusty and wet environments. The robust design withstands heavy loads from plowing, tilling, and harvesting, while the precision manufacturing ensures consistent performance across seasons. Whether you are a farm equipment manufacturer or a repair shop, this bearing offers a cost-effective solution without compromising quality.
Why Choose Us?
Henan San Kuang Machinery Technology Co., Ltd. has been serving global markets since 2014, exporting to North America, South America, Europe, Africa, Oceania, and Asia. Our factory, located in Luoyang, Henan, spans over 10,000 square meters and is equipped with advanced production lines. We hold multiple certifications including ISO9001, ISO14000, OHSAS18001, and others, reflecting our commitment to quality, environment, and safety. With annual export value exceeding US$2.5 million, we have built long-term partnerships with clients worldwide. Our professional team provides technical support, customized packaging, and flexible shipping via Shanghai, Lianyungang, Qingdao, or Tianjin ports. Contact us today to discuss your bearing requirements and experience reliable service.
Frequently Asked Questions (FAQ)
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Q: What is the difference between 30208 and other tapered roller bearings?
A: The 30208 is a standard metric series bearing with bore 40 mm, outer diameter 80 mm, and width 19.75 mm. It is designed for moderate to heavy loads and is commonly used in agricultural machinery. Other series may have different dimensions or load ratings. -
Q: Can this bearing be used in high-speed applications?
A: The limiting speed for grease lubrication is 5,000 rpm. For higher speeds, oil lubrication or a different bearing type may be recommended. Please consult our technical team for your specific speed requirements. -
Q: Is the bearing pre-lubricated?
A: Standard open bearings are supplied without grease. Sealed or shielded versions come pre-greased with high-quality lithium grease. If you need a specific grease type, we can customize the filling. -
Q: What is the typical lifespan of this bearing in a tractor?
A: Lifespan depends on load, speed, lubrication, and contamination. Under normal conditions, proper maintenance can yield thousands of hours of service. Our bearings are designed for extended durability. -
Q: Do you offer samples for testing?
A: Yes, we provide sample orders for evaluation. Please contact our sales team for sample availability and shipping costs. -
Q: Can I get the bearing with a different cage material?
A: Yes, besides the standard steel cage, we can supply brass or polyamide cages upon request. Brass cages offer higher temperature resistance, while polyamide is lighter and quieter. -
Q: What packaging do you use for export?
A: Each bearing is individually wrapped in oil-proof paper, then packed in a carton box with foam inserts. For bulk orders, we use wooden pallets or crates to ensure safe transit. Custom packaging is also available. -
Q: How do I order the correct clearance for my application?
A: Standard clearance is C0 (normal). If your application involves high temperature or differential expansion, C3 clearance is recommended. Provide your operating conditions, and our engineers will advise the best fit.
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