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
21314EAE4
70
150
35
2.1
310000
325000
3200
4000
21314EAKE4
70
150
35
2.1
310000
325000
3200
4000
22314EAE4
70
150
51
2.1
425000
435000
3000
3800
22314EAKE4
70
150
51
2.1
425000
435000
3000
3800
22215EAE4
75
130
31
1.5
238000
244000
4000
5000
22215EAKE4
75
130
31
1.5
238000
244000
4000
5000
21315EAE4
75
160
37
2.1
310000
325000
3200
4000
21315EAKE4
75
160
37
2.1
310000
325000
3200
4000
22315EAE4
75
160
55
2.1
485000
505000
2800
3600
22315EAKE4
75
160
55
2.1
485000
505000
2800
3600
22216EAE4
80
140
33
2
264000
275000
3600
4500
22216EAKE4
80
140
33
2
264000
275000
3600
4500
21316EAE4
80
170
39
2.1
355000
375000
3000
3800
21316EAKE4
80
170
39
2.1
355000
375000
3000
3800
22316EAE4
80
170
58
2.1
540000
565000
2600
3400
22316EAKE4
80
170
58
2.1
540000
565000
2600
3400
22217EAE4
85
150
36
2
310000
325000
3400
4300
22217EAKE4
85
150
36
2
310000
325000
3400
4300
21317EAE4
85
180
41
3
360000
395000
3000
4000
21317EAKE4
85
180
41
3
360000
395000
3000
4000
22317EAE4
85
180
60
3
600000
630000
2400
3200
22317EAKE4
85
180
60
3
600000
630000
2400
3200
22218EAE4
90
160
40
2
360000
395000
3200
4000
22218EAKE4
90
160
40
2
360000
395000
3200
4000