**Introduction to NTN Spherical Roller Bearings: Precision, Durability, and Versatility**
NTN is a globally recognized leader in the design and manufacture of high-performance rolling bearings, with a strong reputation for innovation and reliability. Among its extensive product portfolio, **NTN Spherical Roller Bearings** stand out as a critical solution for applications requiring exceptional load capacity, misalignment compensation, and long service life. Available in **standard designs** and **tapered bore configurations**, these bearings are engineered to meet the demanding requirements of industrial machinery, automotive systems, and heavy-duty equipment.
### **Technical Features & Design Advantages**
NTN Spherical Roller Bearings are designed with a **self-aligning capability**, thanks to their unique spherical raceway in the outer ring and barrel-shaped rollers. This allows them to accommodate **shaft misalignment** and **housing deflections**, reducing stress and wear in applications where alignment precision is challenging. Key features include:
– **High Load Capacity**: Optimized roller geometry and advanced heat treatment ensure superior **radial and axial load handling**, making them ideal for heavy machinery and shock-loaded environments.
– **Robust Construction**: NTN bearings incorporate **high-quality steel alloys** and precision grinding for enhanced durability, even in contaminated or high-vibration conditions.
– **Tapered Bore Option**: Spherical roller bearings with a **tapered bore** facilitate easier mounting and dismounting using adapter sleeves or withdrawal sleeves, ensuring a secure fit on tapered shafts.
– **Advanced Sealing & Lubrication**: Options include **labyrinth seals, snap-ring grooves**, and specialized grease formulations to extend maintenance intervals and protect against contaminants.
### **Performance Benefits**
NTN’s Spherical Roller Bearings deliver **longer operational life** and **reduced downtime** in harsh industrial environments. Their ability to **compensate for misalignment** minimizes edge loading, while optimized internal clearances enhance performance under fluctuating temperatures and speeds. Additionally, NTN’s proprietary manufacturing processes ensure **low noise, smooth operation**, and **energy efficiency**, contributing to lower total cost of ownership.
### **Typical Applications**
These bearings are widely used across industries where reliability under heavy loads and misalignment is critical:
– **Industrial Machinery**: Crushers, pulverizers, conveyors, and gearboxes in mining, cement, and steel production.
– **Automotive & Transportation**: Heavy-duty truck axles, off-road vehicle transmissions, and rail traction systems.
– **Energy & Power Generation**: Wind turbine pitch/yaw systems, hydroelectric turbines, and generator shafts.
– **Precision Equipment**: Paper mill rollers, printing presses, and large-scale pumps requiring precise alignment tolerance.
With a commitment to **precision engineering** and **continuous innovation**, NTN’s Spherical Roller Bearings—whether standard or tapered bore—provide unmatched performance in the most challenging applications. By combining **robust construction, adaptability, and ease of maintenance**, NTN ensures optimal machinery uptime and efficiency for customers worldwide.
For industries demanding **durability, flexibility, and high load-bearing performance**, NTN’s Spherical Roller Bearings remain a trusted solution. Explore NTN’s full range to find the ideal bearing configuration for your specific operational needs.
| Part Number | d | D | B | r | Mass | 
|---|---|---|---|---|---|
| 190.000 mm | 320.000 mm | 128.000 mm | 3.000 mm | 41.500 kg | |
| 200.000 mm | 340.000 mm | 140.000 mm | 3.000 mm | 50.700 kg | |
| 200.000 mm | 340.000 mm | 140.000 mm | 3.000 mm | 50.700 kg | |
| 220.000 mm | 370.000 mm | 150.000 mm | 4.000 mm | 64.300 kg | |
| 220.000 mm | 370.000 mm | 150.000 mm | 4.000 mm | 64.300 kg | |
| 240.000 mm | 400.000 mm | 160.000 mm | 4.000 mm | 79.800 kg | |
| 240.000 mm | 400.000 mm | 160.000 mm | 4.000 mm | 79.800 kg | |
| 320.000 mm | 540.000 mm | 218.000 mm | 5.000 mm | 204.000 kg | |
| 340.000 mm | 580.000 mm | 243.000 mm | 5.000 mm | 265.000 kg | |
| 400.000 mm | 650.000 mm | 250.000 mm | 6.000 mm | 324.000 kg | |
| 260.000 mm | 400.000 mm | 104.000 mm | 4.000 mm | 35.000 kg | |
| 280.000 mm | 420.000 mm | 106.000 mm | 4.000 mm | 40.000 kg | |
| 200.000 mm | 310.000 mm | 109.000 mm | 2.100 mm | 29.000 kg | |
| 380.000 mm | 520.000 mm | 106.000 mm | 4.000 mm | 67.700 kg | |
| 340.000 mm | 520.000 mm | 180.000 mm | 5.000 mm | 138.000 kg | |
| 150.000 mm | 270.000 mm | 73.000 mm | 3.000 mm | 17.700 kg | |
| 150.000 mm | 270.000 mm | 73.000 mm | 3.000 mm | 17.700 kg | |
| 220.000 mm | 400.000 mm | 108.000 mm | 4.000 mm | 59.410 kg | |
| 340.000 mm | 520.000 mm | 180.000 mm | 5.000 mm | 138.000 kg | |
| 120.000 mm | 200.000 mm | 80.000 mm | 2.000 mm | 9.870 kg | |
| 130.000 mm | 210.000 mm | 80.000 mm | 2.000 mm | 10.130 kg | |
| 130.000 mm | 210.000 mm | 80.000 mm | 2.000 mm | 10.500 kg | |
| 130.000 mm | 210.000 mm | 80.000 mm | 2.000 mm | 10.500 kg | |
| 140.000 mm | 225.000 mm | 85.000 mm | 2.100 mm | 12.300 kg | 
