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
239/630CAME4
630
850
165
6
4000000
9350000
300
360
239/630CAMKE4
630
850
165
6
4000000
9350000
300
360
230/630CAME4
630
920
212
7.5
5900000
12700000
280
340
230/630CAMKE4
630
920
212
7.5
5900000
12700000
280
340
240/630CAME4
630
920
290
7.5
7550000
17700000
220
300
240/630CAMK30E4
630
920
290
7.5
7550000
17700000
220
300
231/630CAME4
630
1030
315
7.5
9600000
19400000
260
231/630CAMKE4
630
1030
315
7.5
9600000
19400000
260
241/630CAME4
630
1030
400
7.5
11300000
23900000
200
260
241/630CAMK30E4
630
1030
400
7.5
11300000
23900000
200
260
232/630CAME4
630
1150
412
12
13400000
25600000
180
240
232/630CAMKE4
630
1150
412
12
13400000
25600000
180
240
239/670CAME4
670
900
170
6
4350000
10300000
260
340
239/670CAMKE4
670
900
170
6
4350000
10300000
260
340
230/670CAME4
670
980
230
7.5
6850000
15000000
240
320
230/670CAMKE4
670
980
230
7.5
6850000
15000000
240
320
240/670CAME4
670
980
308
7.5
8450000
19500000
200
260
240/670CAMK30E4
670
980
308
7.5
8450000
19500000
200
260
23292CAME4
460
830
296
7.5
7350000
13700000
280
380
23292CAMKE4
460
830
296
7.5
7350000
13700000
280
380
23996CAME4
480
650
128
5
2580000
5850000
400
500
23996CAMKE4
480
650
128
5
2580000
5850000
400
500
23096CAME4
480
700
165
6
3800000
7950000
400
480
23096CAMKE4
480
700
165
6
3800000
7950000
400
480