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
6304LUC3
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.138 kg
SC04B09C3
19.060 mm
45.225 mm
15.500 mm
R12LBZC3
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.062 kg
R12LLU/FG1
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg
SC0494Z
19.088 mm
44.450 mm
12.700 mm
0.085 kg
6004ZN
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.069 kg
6004ZNC3
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.069 kg
6204ZN
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.106 kg
6204ZNC3
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.106 kg
6304ZN
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.144 kg
R12LLUC3
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg
6304ZNC3
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.144 kg
R12LLUC3/EM
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg
6904ZN
20.000 mm
37.000 mm
9.000 mm
0.300 mm
0.030 kg
6203LLB/19.05
19.050 mm
40.000 mm
12.000 mm
0.600 mm
6904ZNC3
20.000 mm
37.000 mm
9.000 mm
0.300 mm
0.030 kg
6204LLB/19.05
19.050 mm
47.000 mm
14.000 mm
1.000 mm
0.104 kg
6004LBN
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.069 kg
SC0440LC3
19.060 mm
45.225 mm
15.494 mm
1.000 mm
0.108 kg
SC0493LLU
19.050 mm
44.450 mm
12.700 mm
0.088 kg
6204LLU/19.05
19.050 mm
47.000 mm
14.000 mm
1.000 mm
0.103 kg
6203/19.05C3
19.050 mm
40.000 mm
12.000 mm
0.600 mm
6004LLUNR/19.1C3#01
19.100 mm
42.000 mm
12.000 mm
0.600 mm
R12ZZ
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg