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
23219CAME4
95
170
55.6
2.1
370000
525000
1700
2200
23219CAMKE4
95
170
55.6
2.1
370000
525000
1700
2200
21319CAME4
95
200
45
3
430000
435000
1500
2000
21319CAMKE4
95
200
45
3
430000
435000
1500
2000
21319CE4
95
200
45
3
430000
435000
1500
2000
21319CKE4
95
200
45
3
430000
435000
1500
2000
22319EAE4
95
200
67
3
735000
780000
2200
2800
22319EAKE4
95
200
67
3
735000
780000
2200
2800
23020CDE4
100
150
37
1.5
212000
335000
2200
2800
23020CDKE4
100
150
37
1.5
212000
335000
2200
2800
24020CE4
100
150
50
1.5
276000
470000
1800
2400
24020CK30E4
100
150
50
1.5
276000
470000
1800
2400
23120CE4
100
165
52
2
345000
530000
1700
2200
23120CKE4
100
165
52
2
345000
530000
1700
2200
24120CAME4
100
165
65
2
345000
535000
1700
2200
24120CAMK30E4
100
165
65
2
345000
535000
1700
2200
22220EAE4
100
180
46
2.1
455000
490000
2800
3600
22220EAKE4
100
180
46
2.1
455000
490000
2800
3600
23220CAME4
100
180
60.3
2.1
525000
605000
1600
2200
23220CAMKE4
100
180
60.3
2.1
525000
605000
1600
2200
23220CE4
100
180
60.3
2.1
525000
605000
1600
2200
23220CKE4
100
180
60.3
2.1
525000
605000
1600
2200
21320CAME4
100
215
47
3
495000
485000
1400
1900
21320CAMKE4
100
215
47
3
495000
485000
1400
1900