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
21317VMKC3
85.000 mm
180.000 mm
41.000 mm
3.000 mm
5.230 kg
22205EAKW33
25.000 mm
52.000 mm
18.000 mm
1.000 mm
0.169 kg
22205EAKW33C3
25.000 mm
52.000 mm
18.000 mm
1.000 mm
0.169 kg
22205EMKW33
25.000 mm
52.000 mm
18.000 mm
1.000 mm
0.171 kg
22205EMKW33C3
25.000 mm
52.000 mm
18.000 mm
1.000 mm
0.171 kg
21309VKC3
45.000 mm
100.000 mm
25.000 mm
1.500 mm
0.950 kg
22206EAKW33
30.000 mm
62.000 mm
20.000 mm
1.000 mm
0.272 kg
21311K
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.690 kg
22206EAKW33C3
30.000 mm
62.000 mm
20.000 mm
1.000 mm
0.272 kg
21311KW33
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.610 kg
22206EMKW33
30.000 mm
62.000 mm
20.000 mm
1.000 mm
0.275 kg
21312KW33
60.000 mm
130.000 mm
31.000 mm
2.100 mm
2.070 kg
22206EMKW33C3
30.000 mm
62.000 mm
20.000 mm
1.000 mm
0.275 kg
21313K
65.000 mm
140.000 mm
33.000 mm
2.100 mm
2.510 kg
21313KW33
65.000 mm
140.000 mm
33.000 mm
2.100 mm
2.510 kg
21314K
70.000 mm
150.000 mm
35.000 mm
2.100 mm
3.140 kg
21314KW33
70.000 mm
150.000 mm
35.000 mm
2.100 mm
3.140 kg
21316K
80.000 mm
170.000 mm
39.000 mm
2.100 mm
4.470 kg
21316KW33
80.000 mm
170.000 mm
39.000 mm
2.100 mm
4.470 kg