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
6305LLUNR
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.236 kg
6305LLUNRC3
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.236 kg
6205ZZNR
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.131 kg
6805LLUNR
25.000 mm
37.000 mm
7.000 mm
0.300 mm
6205ZZNRC3
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.132 kg
6805LLUNRC3
25.000 mm
37.000 mm
7.000 mm
0.300 mm
6305ZZNR
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.239 kg
6905LLUNR
25.000 mm
42.000 mm
9.000 mm
0.300 mm
6305ZZNRC3
25.000 mm
62.000 mm
17.000 mm
1.100 mm
6905LLUNRC3
25.000 mm
42.000 mm
9.000 mm
0.300 mm
63305ZZNR
25.000 mm
62.000 mm
25.400 mm
1.100 mm
0.343 kg
TS2-6805JRZZNRC4#04
25.000 mm
37.000 mm
7.000 mm
0.300 mm
0.021 kg
6805ZZNR
25.000 mm
37.000 mm
7.000 mm
0.300 mm
6805ZZNRC3
25.000 mm
37.000 mm
7.000 mm
0.300 mm
6905ZZNR
25.000 mm
42.000 mm
9.000 mm
0.300 mm
6905ZZNRC3
25.000 mm
42.000 mm
9.000 mm
0.300 mm
6005LLUNR
25.000 mm
47.000 mm
12.000 mm
0.600 mm
0.082 kg
61805
25.000 mm
37.000 mm
7.000 mm
0.300 mm
6205T2C2
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.128 kg
6705
25.000 mm
32.000 mm
4.000 mm
0.200 mm
63/22X7/25
25.000 mm
56.000 mm
16.000 mm
1.100 mm
0.163 kg
6705C3
25.000 mm
32.000 mm
4.000 mm
0.200 mm
63/28CNX5/25V1
25.000 mm
68.000 mm
18.000 mm
1.100 mm
0.298 kg
6005ZZNR
25.000 mm
47.000 mm
12.000 mm
0.600 mm
0.081 kg