Single Row Radial Ball Bearings

**NTN Single Row Deep Groove Ball Bearings: Precision, Durability & Performance for Demanding Applications**

NTN’s **Single Row Deep Groove Ball Bearings** represent the pinnacle of reliability and efficiency in radial bearing technology. Designed to handle both radial and moderate axial loads, these bearings are engineered for high-speed operation, low noise, and extended service life across a wide range of industrial and automotive applications. With precision-ground raceways, high-quality steel construction, and advanced sealing options, NTN’s deep groove ball bearings deliver unmatched performance in compact, lightweight designs.

### **Technical Features & Design Advantages**
NTN’s deep groove ball bearings incorporate several key innovations to optimize performance:
– **Robust Single-Row Design**: The deep, uninterrupted raceway geometry ensures smooth load distribution, reducing stress concentrations and wear.
– **High-Grade Materials**: Manufactured from premium chromium steel (SUJ2 equivalent) or specialty alloys, these bearings resist fatigue and deformation under heavy loads.
– **Precision Grinding & Tolerances**: NTN’s stringent manufacturing standards ensure ABEC-1 to ABEC-7 tolerance classes, minimizing vibration for sensitive applications.
– **Versatile Configurations**: Available with shields (ZZ, 2Z), rubber seals (LLU, 2LU), or open designs to suit lubrication and contamination control needs.
– **Optimized Cage Designs**: Options include pressed steel, machined brass, or polymer cages (e.g., glass fiber-reinforced PA66) for high-speed stability.

### **Performance Benefits**
– **Low Friction & Energy Efficiency**: Reduced torque losses enhance efficiency in motors, pumps, and electric vehicles (EVs).
– **High-Speed Capability**: Advanced lubrication and dynamic balancing enable stable operation at extreme RPMs (e.g., machine tool spindles).
– **Long Service Life**: NTN’s proprietary heat treatment and surface finishing technologies (like TF treatment) combat micropitting and extend bearing life.
– **Quiet Operation**: Precision engineering minimizes acoustic noise, ideal for HVAC fans and automotive alternators.

### **Typical Applications**
NTN’s deep groove ball bearings are integral to:
– **Industrial Machinery**: Electric motors, gearboxes, conveyors, and CNC equipment.
– **Automotive Systems**: Wheel hubs, transmissions, alternators, and EV drivetrains.
– **Precision Equipment**: Medical devices, robotics, and aerospace actuators.
– **Consumer Appliances**: Compressors, power tools, and agricultural machinery.

For engineers seeking a balance of load capacity, speed, and reliability, NTN’s deep groove ball bearings offer a proven solution backed by global R&D and stringent quality control. Whether in harsh industrial environments or high-performance automotive systems, these bearings ensure smooth, maintenance-free operation under demanding conditions.

*Explore NTN’s full range of sizes, seals, and specialty coatings to match your application’s exact requirements.*

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Part Number d D B r Mass
6318LLBC3/9B
90.000 mm
190.000 mm
43.000 mm
3.000 mm
4.960 kg
6318N
90.000 mm
190.000 mm
43.000 mm
3.000 mm
6318NC3
90.000 mm
190.000 mm
43.000 mm
3.000 mm
6818N
90.000 mm
115.000 mm
13.000 mm
1.000 mm
6818NC3
90.000 mm
115.000 mm
13.000 mm
1.000 mm
6918N
90.000 mm
125.000 mm
18.000 mm
1.100 mm
6918NC3
90.000 mm
125.000 mm
18.000 mm
1.100 mm
6918ZZ
90.000 mm
125.000 mm
18.000 mm
1.100 mm
0.556 kg
6918ZZC3
90.000 mm
125.000 mm
18.000 mm
1.100 mm
6018ZZ
90.000 mm
140.000 mm
24.000 mm
1.500 mm
1.170 kg
6818LLBNRC3
90.000 mm
115.000 mm
13.000 mm
1.000 mm
6218ZZ
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.154 kg
6918LLBNR
90.000 mm
125.000 mm
18.000 mm
1.100 mm
6318ZZ
90.000 mm
190.000 mm
43.000 mm
3.000 mm
4.950 kg
6918LLBNRC3
90.000 mm
125.000 mm
18.000 mm
1.100 mm
BL218ZZ
90.000 mm
160.000 mm
30.000 mm
2.000 mm
6218N
90.000 mm
160.000 mm
30.000 mm
2.000 mm
TMB218ZZ
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.154 kg
6218NC3
90.000 mm
160.000 mm
30.000 mm
2.000 mm
6018N
90.000 mm
140.000 mm
24.000 mm
1.500 mm
6018NC3
90.000 mm
140.000 mm
24.000 mm
1.500 mm
6918LLUNR
90.000 mm
125.000 mm
18.000 mm
1.100 mm
6918LLUNRC3
90.000 mm
125.000 mm
18.000 mm
1.100 mm
6218LLBNRC3
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.108 kg