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
232/710CAME4
710
1280
450
12
15700000
30500000
160
200
232/710CAMKE4
710
1280
450
12
15700000
30500000
160
200
239/750CAME4
750
1000
185
6
5250000
12800000
220
280
239/750CAMKE4
750
1000
185
6
5250000
12800000
220
280
230/750CAME4
750
1090
250
7.5
7750000
17200000
220
260
230/750CAMKE4
750
1090
250
7.5
7750000
17200000
220
260
240/750CAME4
750
1090
335
7.5
10100000
24000000
180
220
240/750CAMK30E4
750
1090
335
7.5
10100000
24000000
180
220
232/750CAME4
750
1360
475
15
17700000
35500000
140
190
232/750CAMKE4
750
1360
475
15
17700000
35500000
140
190
239/800CAME4
800
1060
195
6
5600000
13700000
220
260
239/800CAMKE4
800
1060
195
6
5600000
13700000
220
260
230/800CAME4
800
1150
258
7.5
8350000
19100000
200
240
230/800CAMKE4
800
1150
258
7.5
8350000
19100000
200
240
240/800CAME4
800
1150
345
7.5
10900000
26200000
160
200
240/800CAMK30E4
800
1150
345
7.5
10900000
26200000
160
200
231/800CAME4
800
1280
375
9.5
13800000
29200000
150
190
231/800CAMKE4
800
1280
375
9.5
13800000
29200000
150
190
239/850CAME4
850
1120
200
6
6100000
15200000
190
240
239/850CAMKE4
850
1120
200
6
6100000
15200000
190
240
230/850CAME4
850
1220
272
7.5
9300000
21400000
180
220
230/850CAMKE4
850
1220
272
7.5
9300000
21400000
180
220
240/850CAME4
850
1220
365
7.5
11600000
28300000
150
190
240/850CAMK30E4
850
1220
365
7.5
11600000
28300000
150
190