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
22316EAKE4
80
170
58
2.1
540000
565000
2600
3400
21314EAE4
70
150
35
2.1
310000
325000
3200
4000
22217EAE4
85
150
36
2
310000
325000
3400
4300
21314EAKE4
70
150
35
2.1
310000
325000
3200
4000
22217EAKE4
85
150
36
2
310000
325000
3400
4300
22212EAE4
60
110
28
1.5
178000
174000
4800
6000
22314EAE4
70
150
51
2.1
425000
435000
3000
3800
21317EAE4
85
180
41
3
360000
395000
3000
4000
22212EAKE4
60
110
28
1.5
178000
174000
4800
6000
22314EAKE4
70
150
51
2.1
425000
435000
3000
3800
21317EAKE4
85
180
41
3
360000
395000
3000
4000
21312EAE4
60
130
31
2.1
238000
244000
3800
4800
22215EAE4
75
130
31
1.5
238000
244000
4000
5000
22317EAE4
85
180
60
3
600000
630000
2400
3200
21312EAKE4
60
130
31
2.1
238000
244000
3800
4800
22215EAKE4
75
130
31
1.5
238000
244000
4000
5000
22317EAKE4
85
180
60
3
600000
630000
2400
3200
22312EAE4
60
130
46
2.1
340000
340000
3600
4500
21315EAE4
75
160
37
2.1
310000
325000
3200
4000
22218EAE4
90
160
40
2
360000
395000
3200
4000
22312EAKE4
60
130
46
2.1
340000
340000
3600
4500
21315EAKE4
75
160
37
2.1
310000
325000
3200
4000
22218EAKE4
90
160
40
2
360000
395000
3200
4000
22213EAE4
65
120
31
1.5
221000
230000
4300
5300