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
6204LLUNRC3
20.000 mm
47.000 mm
14.000 mm
1.000 mm
6304LLUNR
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.148 kg
6304LLUNRC3
20.000 mm
52.000 mm
15.000 mm
1.100 mm
6004ZZNR
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.070 kg
6904LLUNR
20.000 mm
37.000 mm
9.000 mm
0.300 mm
6004ZZNRC3
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.070 kg
6904LLUNRC3
20.000 mm
37.000 mm
9.000 mm
0.300 mm
6204ZZNR
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.106 kg
6004LLBNR
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.071 kg
TMB304CX1
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.143 kg
6204F600
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.104 kg
6204F604
20.000 mm
47.000 mm
14.000 mm
1.000 mm
61804Y
20.000 mm
32.000 mm
7.000 mm
0.300 mm
6004L1CC3P4
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.068 kg
BL204
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.105 kg
6205X25T2/20C4
20.000 mm
52.000 mm
15.000 mm
1.000 mm
0.137 kg
6204P5
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.105 kg
6204T1P6
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.102 kg
16004C3
20.000 mm
42.000 mm
8.000 mm
0.300 mm
0.051 kg
6204T2X3C3
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.100 kg
6004F604
20.000 mm
42.000 mm
12.000 mm
0.600 mm
6904C3
20.000 mm
37.000 mm
9.000 mm
0.300 mm
0.030 kg
6004P5
20.000 mm
42.000 mm
12.000 mm
0.600 mm
0.069 kg
6804C3
20.000 mm
32.000 mm
7.000 mm
0.300 mm
0.017 kg