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
NU1028
140
210
33
2
1.1
158
216000
250000
NUP1028
140
210
33
2
2
158
216000
250000
N228M
140
250
42
3
3
221
400000
420000
N228W
140
250
42
3
3
221
365000
375000
NF228M
140
250
42
3
3
221
400000
420000
NF228W
140
250
42
3
3
221
365000
375000
NJ228EM
140
250
42
3
3
169
485000
515000
NU228EM
140
250
42
3
3
169
485000
515000
NUP228EM
140
250
42
3
3
169
485000
515000
NJ222ET7
110
200
38
2.1
2.1
132.5
360000
365000
NU222EM
110
200
38
2.1
2.1
132.5
360000
365000
NU222ET
110
200
38
2.1
2.1
132.5
360000
365000
NU222ET7
110
200
38
2.1
2.1
132.5
360000
365000
NUP222EM
110
200
38
2.1
2.1
132.5
360000
365000
NUP222ET
110
200
38
2.1
2.1
132.5
360000
365000
NUP222ET7
110
200
38
2.1
2.1
132.5
360000
365000
NJ2222EM
110
200
53
2.1
2.1
132.5
470000
515000
NU2222EM
110
200
53
2.1
2.1
132.5
470000
515000
NUP2222EM
110
200
53
2.1
2.1
132.5
470000
515000
N322M
110
240
50
3
3
207
465000
435000
N322W
110
240
50
3
3
207
465000
435000
NF322M
110
240
50
3
3
207
465000
435000
NF322W
110
240
50
3
3
207
465000
435000
NJ322EM
110
240
50
3
3
143
555000
525000