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
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
23152BKW33C3
260.000 mm
440.000 mm
144.000 mm
4.000 mm
86.752 kg
23152BL1KW33
260.000 mm
440.000 mm
144.000 mm
4.000 mm
88.600 kg
23152BL1KW33C3
260.000 mm
440.000 mm
144.000 mm
4.000 mm
88.600 kg
23152BL1KW33C4
260.000 mm
440.000 mm
144.000 mm
4.000 mm
88.600 kg
23126EAKW33
130.000 mm
210.000 mm
64.000 mm
2.000 mm
8.190 kg
23126EAKW33C3
130.000 mm
210.000 mm
64.000 mm
2.000 mm
8.190 kg
23126EMKW33
130.000 mm
210.000 mm
64.000 mm
2.000 mm
8.250 kg
23126EMKW33C3
130.000 mm
210.000 mm
64.000 mm
2.000 mm
8.250 kg
23128EAKW33
140.000 mm
225.000 mm
68.000 mm
2.100 mm
9.940 kg
23128EAKW33C3
140.000 mm
225.000 mm
68.000 mm
2.100 mm
9.940 kg
23128EMKW33
140.000 mm
225.000 mm
68.000 mm
2.100 mm
10.000 kg
23128EMKW33C3
140.000 mm
225.000 mm
68.000 mm
2.100 mm
10.000 kg
23130EAKW33
150.000 mm
250.000 mm
80.000 mm
2.100 mm
15.200 kg
23130EAKW33C2
150.000 mm
250.000 mm
80.000 mm
2.100 mm
15.200 kg
23130EAKW33C3
150.000 mm
250.000 mm
80.000 mm
2.100 mm
15.200 kg
23130EMKW33
150.000 mm
250.000 mm
80.000 mm
2.100 mm
15.300 kg
23130EMKW33C3
150.000 mm
250.000 mm
80.000 mm
2.100 mm
15.300 kg