Spherical Roller Bearings

**NSK Spherical Roller Bearings: Precision Motion for Demanding Industrial Applications**

In the world of precision motion and control, NSK stands as a leader in delivering high-performance bearing solutions designed to meet the rigorous demands of modern industrial machinery, automotive systems, and precision equipment. Among NSK’s extensive portfolio of roller bearings, **Spherical Roller Bearings** stand out for their exceptional load capacity, self-aligning capability, and durability—making them indispensable in applications where misalignment, heavy loads, and harsh operating conditions are common challenges.

### **Technical Features & Design Excellence**
NSK’s Spherical Roller Bearings are engineered with a robust double-row barrel-shaped roller design, paired with a spherical outer ring raceway. This unique construction allows the bearings to accommodate **both radial and axial loads simultaneously**, while compensating for **shaft misalignment**—a critical advantage in machinery subject to deflection or mounting inaccuracies. Key technical features include:

– **High Load Capacity:** Optimized roller geometry and advanced heat treatment processes ensure superior resistance to dynamic and static loads, extending service life even under extreme stress.
– **Self-Alignment Capability:** The spherical outer ring design permits up to **2-3 degrees of angular misalignment**, reducing stress concentrations and preventing premature failure in applications where shaft deflection or housing distortion occurs.
– **Enhanced Lubrication & Sealing:** NSK incorporates advanced sealing solutions and lubrication technologies to minimize friction, reduce wear, and prevent contamination—critical for bearings operating in dirty or high-temperature environments.
– **Precision-Grade Manufacturing:** Manufactured to tight tolerances using high-quality steel and advanced grinding techniques, NSK Spherical Roller Bearings deliver smooth, vibration-free operation essential for precision equipment.

### **Performance Advantages for Industrial & Automotive Applications**
NSK’s Spherical Roller Bearings excel in applications requiring **high reliability, long service life, and minimal maintenance**. Their ability to handle heavy loads and misalignment makes them ideal for:

– **Industrial Machinery:** Used in gearboxes, conveyors, crushers, and mining equipment where shock loads and misalignment are prevalent.
– **Material Handling & Construction Equipment:** Essential for cranes, excavators, and heavy-duty pulleys where durability under variable loads is critical.
– **Automotive & Transportation:** Applied in truck axles, transmissions, and off-road vehicles that demand robust performance under harsh conditions.
– **Wind Turbines & Energy Systems:** Trusted in renewable energy applications where reliability and minimal downtime are paramount.

### **Conclusion: Engineered for Reliability & Efficiency**
NSK Spherical Roller Bearings represent the pinnacle of precision motion control, combining innovative design with high-performance materials to deliver unmatched reliability in the most demanding environments. Whether in heavy industry, automotive systems, or precision machinery, NSK’s bearings ensure **smooth operation, extended service life, and reduced maintenance costs**—reinforcing NSK’s reputation as a global leader in advanced bearing technology.

For industries that demand **durability, precision, and efficiency**, NSK Spherical Roller Bearings provide the optimal solution to enhance performance and productivity.

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Designations Nominal Dimensions Basic Load Ratings Speeds
Limiting Speeds
d
mm
D
mm
B
mm
r (min.)
mm
Cr
N
C0r
N
Grease
min-1
Oil (Oil-bath)
min-1
21320CE4
100
215
47
3
495000
485000
1400
1900
21320CKE4
100
215
47
3
495000
485000
1400
1900
22320EAE4
100
215
73
3
860000
930000
1800
2400
22320EAKE4
100
215
73
3
860000
930000
1800
2400
23022CDE4
110
170
45
2
293000
465000
2000
2400
23022CDKE4
110
170
45
2
293000
465000
2000
2400
24022CE4
110
170
60
2
380000
645000
1600
2200
24022CK30E4
110
170
60
2
380000
645000
1600
2200
23122CAME4
110
180
56
2
480000
630000
1600
2000
23122CAMKE4
110
180
56
2
480000
630000
1600
2000
22212EAE4
60
110
28
1.5
178000
174000
4800
6000
22212EAKE4
60
110
28
1.5
178000
174000
4800
6000
21312EAE4
60
130
31
2.1
238000
244000
3800
4800
21312EAKE4
60
130
31
2.1
238000
244000
3800
4800
22312EAE4
60
130
46
2.1
340000
340000
3600
4500
22312EAKE4
60
130
46
2.1
340000
340000
3600
4500
22213EAE4
65
120
31
1.5
221000
230000
4300
5300
22213EAKE4
65
120
31
1.5
221000
230000
4300
5300
21313EAE4
65
140
33
2.1
264000
275000
3600
4500
21313EAKE4
65
140
33
2.1
264000
275000
3600
4500
22313EAE4
65
140
48
2.1
375000
380000
3200
4000
22313EAKE4
65
140
48
2.1
375000
380000
3200
4000
22214EAE4
70
125
31
1.5
225000
232000
4000
5300
22214EAKE4
70
125
31
1.5
225000
232000
4000
5300