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
6218
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.150 kg
6318
90.000 mm
190.000 mm
43.000 mm
3.000 mm
4.910 kg
6418
90.000 mm
225.000 mm
54.000 mm
3.000 mm
9.580 kg
6018NR
90.000 mm
140.000 mm
24.000 mm
1.500 mm
1.212 kg
BL218
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.410 kg
6018NRC3
90.000 mm
140.000 mm
24.000 mm
1.500 mm
1.212 kg
TMB218
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.142 kg
6018X2NRC3
90.000 mm
140.000 mm
24.000 mm
1.500 mm
1.212 kg
TMB318
90.000 mm
190.000 mm
43.000 mm
3.000 mm
4.910 kg
6918LUNR
90.000 mm
125.000 mm
18.000 mm
1.100 mm
6918LUNRC3
90.000 mm
125.000 mm
18.000 mm
1.100 mm
BL218ZNR
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.460 kg
6018LBNR
90.000 mm
140.000 mm
24.000 mm
1.500 mm
6018LBNRC3
90.000 mm
140.000 mm
24.000 mm
1.500 mm
6218LBNR
90.000 mm
160.000 mm
30.000 mm
2.000 mm
6218LBNRC3
90.000 mm
160.000 mm
30.000 mm
2.000 mm
6318LBNR
90.000 mm
190.000 mm
43.000 mm
3.000 mm
6318LBNRC3
90.000 mm
190.000 mm
43.000 mm
3.000 mm
6018LUNRC3
90.000 mm
140.000 mm
24.000 mm
1.500 mm
6818LBNR
90.000 mm
115.000 mm
13.000 mm
1.000 mm
6218LUNR
90.000 mm
160.000 mm
30.000 mm
2.000 mm
6818LBNRC3
90.000 mm
115.000 mm
13.000 mm
1.000 mm
6218LUNRC3
90.000 mm
160.000 mm
30.000 mm
2.000 mm
6918LBNR
90.000 mm
125.000 mm
18.000 mm
1.100 mm