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
NJ1048
240
360
56
3
3
270
650000
820000
NU1048
240
360
56
3
3
270
650000
820000
N248M
240
440
72
4
4
385
1150000
1340000
NF248M
240
440
72
4
4
385
1150000
1340000
NJ248M
240
440
72
4
4
295
1150000
1340000
NU248M
240
440
72
4
4
295
1150000
1340000
NUP248M
240
440
72
4
4
295
1150000
1340000
NU2248M
240
440
120
4
4
295
1770000
2320000
N348M
240
500
95
5
5
430
1680000
1820000
NF348M
240
500
95
5
5
430
1680000
1820000
NJ348M
240
500
95
5
5
310
1680000
1820000
NU348M
240
500
95
5
5
310
1680000
1820000
N1052
260
400
65
4
4
364
790000
1000000
NF1052
260
400
65
4
4
364
790000
1000000
NJ1052
260
400
65
4
4
296
790000
1000000
NU1052
260
400
65
4
4
296
790000
1000000
N252M
260
480
80
5
5
420
1360000
1580000
NJ2236EM
180
320
86
4
4
215
1240000
1510000
NU2236EM
180
320
86
4
4
215
1240000
1510000
NUP2236EM
180
320
86
4
4
215
1240000
1510000
N336M
180
380
75
4
4
328
1110000
1150000
NF336M
180
380
75
4
4
328
1110000
1150000
NJ336EM
180
380
75
4
4
231
1210000
1230000
NU336EM
180
380
75
4
4
231
1210000
1230000