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
RA188ZZA
6.350 mm
12.700 mm
4.762 mm
0.130 mm
R4AEE
6.350 mm
15.875 mm
7.142 mm
0.305 mm
0.005 kg
FL677
7.000 mm
11.000 mm
2.500 mm
0.100 mm
FL687A
7.000 mm
14.000 mm
3.500 mm
0.150 mm
FL697
7.000 mm
17.000 mm
5.000 mm
0.300 mm
FLBC7-13
7.000 mm
13.000 mm
3.000 mm
0.150 mm
FLAWBC7-13ZZ
7.000 mm
13.000 mm
4.000 mm
0.150 mm
FLWA677ZZ
7.000 mm
11.000 mm
3.000 mm
0.100 mm
FLW687AZZ
7.000 mm
14.000 mm
5.000 mm
0.150 mm
W686ZZ
6.000 mm
13.000 mm
5.000 mm
0.150 mm
626LLB
6.000 mm
19.000 mm
6.000 mm
0.300 mm
0.008 kg
626LLBC3/EM
6.000 mm
19.000 mm
6.000 mm
0.300 mm
0.008 kg
626LLUC3
6.000 mm
19.000 mm
6.000 mm
0.300 mm
0.008 kg
626LLU
6.000 mm
19.000 mm
6.000 mm
0.300 mm
0.008 kg
696ZZA
6.000 mm
15.000 mm
5.000 mm
0.200 mm
0.004 kg
696T2ZZA
6.000 mm
15.000 mm
5.000 mm
0.200 mm
626LLH
6.000 mm
19.000 mm
6.000 mm
0.300 mm
0.008 kg
626LLUA1C3/LX03
6.000 mm
19.000 mm
6.000 mm
0.300 mm
0.008 kg
606Z/3E
6.000 mm
17.000 mm
6.000 mm
0.300 mm
0.006 kg
626ZC3/L627
6.000 mm
19.000 mm
6.000 mm
0.300 mm
0.007 kg
FLR188
6.350 mm
12.700 mm
3.175 mm
0.130 mm
FLR4
6.350 mm
15.875 mm
4.978 mm
0.300 mm
FLRA188ZZA
6.350 mm
12.700 mm
4.762 mm
0.130 mm
FLRA168AZZ
6.350 mm
9.525 mm
3.175 mm
0.080 mm