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
NUP2209ET7
45
85
23
1.1
1.1
54.5
93500
84500
N309M
45
100
25
1.5
1.5
86.5
97000
77500
N309W
45
100
25
1.5
1.5
86.5
97000
77500
NF309M
45
100
25
1.5
1.5
86.5
97000
77500
NF309W
45
100
25
1.5
1.5
86.5
97000
77500
NJ309EM
45
100
25
1.5
1.5
58.5
120000
98500
NJ309ET
45
100
25
1.5
1.5
58.5
120000
98500
NJ309ET7
45
100
25
1.5
1.5
58.5
120000
98500
NJ309EW
45
100
25
1.5
1.5
58.5
120000
98500
NU309EM
45
100
25
1.5
1.5
58.5
120000
98500
NU309ET
45
100
25
1.5
1.5
58.5
120000
98500
NU309ET7
45
100
25
1.5
1.5
58.5
120000
98500
NU309EW
45
100
25
1.5
1.5
58.5
120000
98500
NUP309EM
45
100
25
1.5
1.5
58.5
120000
98500
NUP309ET
45
100
25
1.5
1.5
58.5
120000
98500
NUP309ET7
45
100
25
1.5
1.5
58.5
120000
98500
NUP309EW
45
100
25
1.5
1.5
58.5
120000
98500
NUP208ET7
40
80
18
1.1
1.1
49.5
68500
55500
NUP208EW
40
80
18
1.1
1.1
49.5
68500
55500
NJ2208EM
40
80
23
1.1
1.1
49.5
89000
77500
NJ2208ET
40
80
23
1.1
1.1
49.5
89000
77500
NJ2208ET7
40
80
23
1.1
1.1
49.5
89000
77500
NU2208EM
40
80
23
1.1
1.1
49.5
89000
77500
NU2208ET
40
80
23
1.1
1.1
49.5
89000
77500