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
NUP336EM
180
380
75
4
4
231
1210000
1230000
NJ2336EM
180
380
126
4
4
227
1920000
2220000
NU2336EM
180
380
126
4
4
227
1920000
2220000
NUP2336EM
180
380
126
4
4
227
1920000
2220000
N1038
190
290
46
2.1
2.1
265
445000
535000
NJ1038
190
290
46
2.1
2.1
215
445000
535000
NU1038
190
290
46
2.1
2.1
215
445000
535000
N238M
190
340
55
4
4
299
685000
770000
NF238M
190
340
55
4
4
299
685000
770000
NJ238EM
190
340
55
4
4
230
855000
955000
NU238EM
190
340
55
4
4
230
855000
955000
NUP238EM
190
340
55
4
4
230
855000
955000
NJ2238EM
190
340
92
4
4
228
1360000
1670000
NU2238EM
190
340
92
4
4
228
1360000
1670000
NUP2238EM
190
340
92
4
4
228
1360000
1670000
N338M
190
400
78
5
5
345
1200000
1260000
NJ338EM
190
400
78
5
5
245
1300000
1340000
NU338EM
190
400
78
5
5
245
1300000
1340000
NUP338EM
190
400
78
5
5
245
1300000
1340000
NJ2338EM
190
400
132
5
5
240
2170000
2520000
NU2338EM
190
400
132
5
5
240
2170000
2520000
NUP2338EM
190
400
132
5
5
240
2170000
2520000
N1040
200
310
51
2.1
2.1
281
480000
580000
NF1040
200
310
51
2.1
2.1
281
480000
580000