**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 |
|---|---|---|---|---|---|
630.000 mm |
850.000 mm |
165.000 mm |
6.000 mm |
268.000 kg |
|
710.000 mm |
950.000 mm |
180.000 mm |
6.000 mm |
||
220.000 mm |
300.000 mm |
60.000 mm |
2.100 mm |
12.700 kg |
|
150.000 mm |
270.000 mm |
96.000 mm |
3.000 mm |
22.900 kg |
|
150.000 mm |
270.000 mm |
96.000 mm |
3.000 mm |
22.900 kg |
|
160.000 mm |
290.000 mm |
104.000 mm |
3.000 mm |
29.420 kg |
|
160.000 mm |
290.000 mm |
104.000 mm |
3.000 mm |
28.800 kg |
|
160.000 mm |
290.000 mm |
104.000 mm |
3.000 mm |
28.800 kg |
|
170.000 mm |
310.000 mm |
110.000 mm |
4.000 mm |
34.800 kg |
|
170.000 mm |
310.000 mm |
110.000 mm |
4.000 mm |
34.800 kg |
|
180.000 mm |
320.000 mm |
112.000 mm |
4.000 mm |
37.100 kg |
|
180.000 mm |
320.000 mm |
112.000 mm |
4.000 mm |
37.100 kg |
|
180.000 mm |
320.000 mm |
112.000 mm |
4.000 mm |
37.100 kg |
|
190.000 mm |
340.000 mm |
120.000 mm |
4.000 mm |
44.700 kg |
|
200.000 mm |
360.000 mm |
128.000 mm |
4.000 mm |
53.600 kg |
|
200.000 mm |
360.000 mm |
128.000 mm |
4.000 mm |
53.600 kg |
|
220.000 mm |
400.000 mm |
144.000 mm |
4.000 mm |
77.100 kg |
|
220.000 mm |
400.000 mm |
144.000 mm |
4.000 mm |
77.100 kg |
|
240.000 mm |
440.000 mm |
160.000 mm |
4.000 mm |
105.000 kg |
|
240.000 mm |
440.000 mm |
160.000 mm |
4.000 mm |
113.000 kg |
|
240.000 mm |
440.000 mm |
160.000 mm |
4.000 mm |
||
260.000 mm |
480.000 mm |
174.000 mm |
5.000 mm |
137.000 kg |
|
260.000 mm |
480.000 mm |
174.000 mm |
5.000 mm |
149.000 kg |
|
90.000 mm |
160.000 mm |
52.400 mm |
2.000 mm |
4.380 kg |