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
R12ZZC3
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg
R12ZZC3/EM
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg
6203T2LLUAC5
17.000 mm
40.000 mm
12.000 mm
0.600 mm
0.064 kg
R12LLB
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg
6303EX8T2XLLVA-BCS14-2/L756QTS
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.115 kg
R12LLBC3
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.062 kg
6303LLUA
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.115 kg
R12LLBC3/EM
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.062 kg
6303LLUAC3/EM
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.115 kg
R12LLU
19.050 mm
41.275 mm
11.113 mm
0.787 mm
0.065 kg
6303T2LLAX9C3
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.115 kg
6303T2LLVACS14-2
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.115 kg
SC0352LLUAC3
17.000 mm
52.000 mm
17.000 mm
1.100 mm
0.270 kg
6203ZZNRC3/EM
17.000 mm
40.000 mm
12.000 mm
0.600 mm
0.066 kg
6903ZZNR
17.000 mm
30.000 mm
7.000 mm
0.300 mm
0.018 kg
6003ZC3/L627
17.000 mm
35.000 mm
10.000 mm
0.300 mm
0.037 kg
6003ZD2PX31V25
17.000 mm
35.000 mm
10.000 mm
0.300 mm
0.780 kg
6003LLUAC3/LX16
17.000 mm
35.000 mm
10.000 mm
0.300 mm
0.039 kg
63203ZZC3/EM
17.000 mm
40.000 mm
17.500 mm
0.600 mm
0.091 kg
6203LLAX30-N1CS25V345
17.000 mm
40.000 mm
12.000 mm
0.600 mm
0.059 kg
2TS3-SC03A70LLBA1C4/LX01Q2
17.000 mm
40.000 mm
16.000 mm
1.000 mm
0.095 kg
6203LLUAC3/EM
17.000 mm
40.000 mm
12.000 mm
0.600 mm
0.066 kg
6203LLBC3/LP03
17.000 mm
40.000 mm
12.000 mm
0.600 mm
0.064 kg
6203LLUAX19-BCS14/LX16Q112
17.000 mm
40.000 mm
12.000 mm
0.600 mm
0.059 kg