Spherical Roller Bearings w/ Tapered Bore

**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.

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Part Number d D B r Mass
23168BKW33
340.000 mm
580.000 mm
190.000 mm
5.000 mm
204.000 kg
23168BL1KW33C3
340.000 mm
580.000 mm
190.000 mm
5.000 mm
204.000 kg
23168VMKW33C3
340.000 mm
580.000 mm
190.000 mm
5.000 mm
23172BKW33C3
360.000 mm
600.000 mm
192.000 mm
5.000 mm
233.000 kg
23172VMKW33
360.000 mm
600.000 mm
192.000 mm
5.000 mm
223.800 kg
23176BKW33C3
380.000 mm
620.000 mm
194.000 mm
5.000 mm
228.000 kg
23176BL1KW33
380.000 mm
620.000 mm
194.000 mm
5.000 mm
246.000 kg
23176BL1KW33C3
380.000 mm
620.000 mm
194.000 mm
5.000 mm
246.000 kg
23180BKW33C3
400.000 mm
650.000 mm
200.000 mm
6.000 mm
254.300 kg
23156BKW33
280.000 mm
460.000 mm
146.000 mm
5.000 mm
94.000 kg
23180BL1KW33C3
400.000 mm
650.000 mm
200.000 mm
6.000 mm
256.000 kg
23156BL1KW33C3
280.000 mm
460.000 mm
146.000 mm
5.000 mm
94.500 kg
23188BL1KW33
440.000 mm
720.000 mm
226.000 mm
6.000 mm
358.000 kg
23156BL1KW-5W33C2PX51
280.000 mm
460.000 mm
146.000 mm
5.000 mm
94.600 kg
23192BL1KW33
460.000 mm
760.000 mm
240.000 mm
7.500 mm
429.000 kg
23138EMKW33
190.000 mm
320.000 mm
104.000 mm
3.000 mm
33.200 kg
23138EMKW33C3
190.000 mm
320.000 mm
104.000 mm
3.000 mm
33.200 kg
23140EMKW33
200.000 mm
340.000 mm
112.000 mm
3.000 mm
40.600 kg
23140EMKW33C3
200.000 mm
340.000 mm
112.000 mm
3.000 mm
40.600 kg
23140EMKW33C4
200.000 mm
340.000 mm
112.000 mm
3.000 mm
40.600 kg
23144EMKW33
220.000 mm
370.000 mm
120.000 mm
4.000 mm
50.700 kg
23144EMKW33C3
220.000 mm
370.000 mm
120.000 mm
4.000 mm
52.300 kg
23148EMKW33
240.000 mm
400.000 mm
128.000 mm
4.000 mm
63.100 kg
23148EMKW33C3
240.000 mm
400.000 mm
128.000 mm
4.000 mm
63.100 kg