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
6820LUNC3
100.000 mm
125.000 mm
13.000 mm
1.000 mm
0.301 kg
6920LUN
100.000 mm
140.000 mm
20.000 mm
1.100 mm
0.799 kg
6920LUNC3
100.000 mm
140.000 mm
20.000 mm
1.100 mm
0.799 kg
6920LU
100.000 mm
140.000 mm
20.000 mm
1.100 mm
6920LUC3
100.000 mm
140.000 mm
20.000 mm
1.100 mm
6919LLUC3
95.000 mm
130.000 mm
18.000 mm
1.100 mm
0.583 kg
6920ZN
100.000 mm
140.000 mm
20.000 mm
1.100 mm
0.799 kg
6819LLUC3
95.000 mm
120.000 mm
13.000 mm
1.000 mm
6319LLUC3
95.000 mm
200.000 mm
45.000 mm
3.000 mm
5.740 kg
6019ZZC3
95.000 mm
145.000 mm
24.000 mm
1.500 mm
1.220 kg
BL319ZZC3
95.000 mm
200.000 mm
45.000 mm
3.000 mm
5.900 kg
6219ZZNRC3/EM
95.000 mm
170.000 mm
32.000 mm
2.100 mm
2.620 kg
BL219Z
95.000 mm
170.000 mm
32.000 mm
2.880 kg
XLS3-3/4GC3
95.250 mm
133.350 mm
19.050 mm
1.600 mm
6020ZN
100.000 mm
150.000 mm
24.000 mm
1.500 mm
1.150 kg
6020ZNC3
100.000 mm
150.000 mm
24.000 mm
1.500 mm
1.150 kg
6220ZN
100.000 mm
180.000 mm
34.000 mm
2.100 mm
3.140 kg
6220ZNC3
100.000 mm
180.000 mm
34.000 mm
2.100 mm
3.140 kg
6320ZN
100.000 mm
215.000 mm
47.000 mm
3.000 mm
7.000 kg
6319LLU
95.000 mm
200.000 mm
45.000 mm
3.000 mm
5.834 kg
6320ZNC3
100.000 mm
215.000 mm
47.000 mm
3.000 mm
7.000 kg
6219LLU
95.000 mm
170.000 mm
32.000 mm
2.100 mm
2.610 kg
6820ZN
100.000 mm
125.000 mm
13.000 mm
1.000 mm
0.301 kg
6019LLU
95.000 mm
145.000 mm
24.000 mm
1.500 mm
1.217 kg