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
6311F604
55.000 mm
120.000 mm
29.000 mm
2.000 mm
6811C3
55.000 mm
72.000 mm
9.000 mm
0.300 mm
6211C4
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.603 kg
6011ZZNR
55.000 mm
90.000 mm
18.000 mm
1.100 mm
0.401 kg
6211L1
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.726 kg
6011ZZNRC3
55.000 mm
90.000 mm
18.000 mm
1.100 mm
6211L1C3
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.726 kg
6211ZZNR
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.623 kg
6211P4
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.601 kg
6211ZZNRC3
55.000 mm
100.000 mm
21.000 mm
1.500 mm
6211P5
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.603 kg
6311C4
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.340 kg
6311P5
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.340 kg
6411C3
55.000 mm
140.000 mm
33.000 mm
2.100 mm
2.340 kg
BL311C3
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.480 kg
16011
55.000 mm
90.000 mm
11.000 mm
0.600 mm
0.251 kg
16011C3
55.000 mm
90.000 mm
11.000 mm
0.600 mm
0.251 kg
6911
55.000 mm
80.000 mm
13.000 mm
1.000 mm
0.183 kg
BL311NR
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.523 kg
6811
55.000 mm
72.000 mm
9.000 mm
0.300 mm
6011
55.000 mm
90.000 mm
18.000 mm
1.100 mm
0.388 kg
6011C2P5
55.000 mm
90.000 mm
18.000 mm
1.100 mm
0.389 kg
6211
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.601 kg
6011C4
55.000 mm
90.000 mm
18.000 mm
1.100 mm
0.389 kg