Single-Row Cylindrical Roller Bearings

**Introduction to NSK’s Single Row Cylindrical Roller Bearings: Precision, Performance, and Reliability**

In the demanding world of industrial machinery, automotive systems, and precision equipment, the reliability and efficiency of rotating components are critical. NSK’s **Single Row Cylindrical Roller Bearings** stand at the forefront of precision motion and control technology, offering unmatched performance in high-load, high-speed applications. Engineered with advanced materials, precision manufacturing, and innovative design features, these bearings deliver exceptional durability, reduced friction, and extended service life—ensuring optimal performance in even the most challenging environments.

### **Technical Features & Design Advantages**
NSK’s Single Row Cylindrical Roller Bearings are designed with a robust construction that maximizes load capacity while minimizing operational friction. Key features include:

– **High Radial Load Capacity:** The optimized roller and raceway geometry ensures even stress distribution, making these bearings ideal for heavy radial loads encountered in industrial gearboxes, machine tools, and powertrain systems.
– **Precision Ground Components:** Manufactured to ultra-tight tolerances, NSK’s bearings minimize vibration and noise, enhancing performance in precision applications such as robotics, medical equipment, and semiconductor manufacturing.
– **Superior Lubrication Retention:** Advanced cage designs and surface treatments improve lubricant distribution, reducing wear and extending maintenance intervals.
– **Heat-Resistant Materials:** High-grade steel and specialized heat treatments enhance durability, even in high-temperature environments like automotive transmissions or steel mill equipment.
– **Low Friction & Energy Efficiency:** Optimized internal geometry reduces power loss, contributing to energy savings in electric motors, wind turbines, and industrial automation systems.

### **Performance Advantages**
NSK’s Single Row Cylindrical Roller Bearings outperform conventional solutions by offering:
– **Longer Service Life:** Reduced wear and fatigue resistance ensure extended operational life, lowering total cost of ownership.
– **Enhanced Rigidity & Stability:** Precision alignment and optimized internal clearances improve machine accuracy, critical for CNC machining and robotics.
– **Versatility in Mounting:** Available in various configurations (e.g., NU, NJ, NUP designs), these bearings accommodate different shaft fixation requirements, simplifying integration into diverse machinery.

### **Typical Applications**
These bearings are widely used in industries where precision, reliability, and high load capacity are essential:
– **Industrial Machinery:** Gearboxes, pumps, compressors, and printing presses.
– **Automotive Systems:** Transmissions, wheel hubs, and electric vehicle drivetrains.
– **Precision Equipment:** Robotics, medical imaging devices, and aerospace actuators.

By combining cutting-edge engineering with rigorous quality control, NSK’s Single Row Cylindrical Roller Bearings provide a dependable solution for applications demanding precision motion control, durability, and efficiency. Whether in high-speed production lines or mission-critical automotive systems, NSK ensures smooth, reliable performance—keeping industries moving forward.

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Designations Nominal Dimensions Basic Load Ratings
d
mm
D
mm
B
mm
r(min.)
mm
r1(min.)
mm
FW
mm
EW
mm
Cr
N
C0r
N
N304W
20
52
15
1.1
0.6
44.5
26300
17300
N205W
25
52
15
1
0.6
45
21800
15700
NF304W
20
52
15
1.1
0.6
44.5
26300
17300
NF205M
25
52
15
1
0.6
45
23100
17000
NJ304ET
20
52
15
1.1
0.6
27.5
39000
26900
NF205W
25
52
15
1
0.6
45
21800
15700
NJ304ET7
20
52
15
1.1
0.6
27.5
39000
26900
NJ205EM
25
52
15
1
0.6
31.5
36000
27700
N204W
20
47
14
1
0.6
40
19000
12700
NU304ET
20
52
15
1.1
0.6
27.5
39000
26900
NJ205ET
25
52
15
1
0.6
31.5
36000
27700
NF204W
20
47
14
1
0.6
40
19000
12700
NU304ET7
20
52
15
1.1
0.6
27.5
39000
26900
NJ205ET7
25
52
15
1
0.6
31.5
36000
27700
NJ204ET
20
47
14
1
0.6
26.5
31500
22600
NUP304ET
20
52
15
1.1
0.6
27.5
39000
26900
NJ205EW
25
52
15
1
0.6
31.5
36000
27700
NJ204ET7
20
47
14
1
0.6
26.5
31500
22600
NUP304ET7
20
52
15
1.1
0.6
27.5
39000
26900
NU205EM
25
52
15
1
0.6
31.5
36000
27700