Single Angular Contact Ball Bearings

**NTN Angular Contact Ball Bearings: Precision Performance for Demanding Applications**

NTN’s Single Row Angular Contact Ball Bearings are engineered to deliver exceptional precision, durability, and load-bearing performance in high-speed and high-precision applications. Designed to accommodate combined radial and axial loads, these bearings are ideal for industrial machinery, automotive systems, and precision equipment where reliability and efficiency are critical.

### **Technical Features & Design Advantages**
NTN’s Single Row Angular Contact Ball Bearings feature a robust design with a contact angle (typically 15°, 25°, 30°, or 40°) that optimizes load distribution between axial and radial forces. The bearings are available in open, shielded, or sealed configurations, with options for high-grade steel, ceramic hybrid materials, or special heat treatments to enhance performance in extreme conditions.

Key design elements include:
– **Precision-Ground Raceways** – Minimize friction and ensure smooth operation at high speeds.
– **Optimized Cage Designs** – Available in pressed steel, machined brass, or polymer cages to reduce weight, prevent slippage, and improve lubrication retention.
– **High-Grade Materials** – NTN uses premium bearing steel (SUJ2 equivalent) or hybrid ceramic balls for applications requiring corrosion resistance, electrical insulation, or ultra-high-speed capability.
– **Preloaded Matched Sets** – For applications requiring rigid axial positioning, NTN offers precision-matched bearing sets (DB, DF, DT, or tandem arrangements) to minimize deflection and improve system stiffness.

### **Performance Benefits**
– **High-Speed Capability** – Low friction and optimized internal geometry allow for superior rotational performance in spindle motors, turbochargers, and machine tool applications.
– **Enhanced Load Capacity** – The angular contact design efficiently handles combined loads, making these bearings ideal for gearboxes, pumps, and electric vehicle drivetrains.
– **Long Service Life** – Advanced lubrication technologies and surface treatments reduce wear, extending bearing life even in contaminated or high-temperature environments.

### **Typical Applications**
NTN’s Single Row Angular Contact Ball Bearings are widely used in:
– **Industrial Machinery** – CNC spindles, robotics, and high-speed machining centers where precision and rigidity are crucial.
– **Automotive Systems** – Wheel hubs, transmissions, and electric motor bearings in hybrid/electric vehicles (EVs).
– **Aerospace & Precision Equipment** – Aviation actuators, medical devices, and optical instruments requiring ultra-low vibration and noise.

With decades of expertise in bearing technology, NTN ensures that its angular contact ball bearings meet the highest industry standards, including ISO, ABEC, and DIN specifications. Whether for high-speed automation, electric mobility, or heavy-duty industrial use, NTN’s bearings provide unmatched performance and reliability.

For applications demanding precision, durability, and efficiency, NTN’s Single Row Angular Contact Ball Bearings are the trusted solution.

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Part Number d D B r Mass
7820C
100.000 mm
125.000 mm
13.000 mm
1.000 mm
0.300 kg
7811CG/GNP4
55.000 mm
72.000 mm
9.000 mm
0.300 mm
0.076 kg
7812C
60.000 mm
78.000 mm
10.000 mm
0.300 mm
0.100 kg
7812CG/GNP4
60.000 mm
78.000 mm
10.000 mm
0.300 mm
0.099 kg
7813C
65.000 mm
85.000 mm
10.000 mm
0.600 mm
0.120 kg
7813CG/GNP4
65.000 mm
85.000 mm
10.000 mm
0.600 mm
0.123 kg
7814C
70.000 mm
90.000 mm
10.000 mm
0.600 mm
0.130 kg
7815C
75.000 mm
95.000 mm
10.000 mm
0.600 mm
0.140 kg
7815CG/GNP4
75.000 mm
95.000 mm
10.000 mm
0.600 mm
0.140 kg
7816C
80.000 mm
100.000 mm
10.000 mm
0.600 mm
0.150 kg
7407B
35.000 mm
100.000 mm
25.000 mm
1.000 mm
1.098 kg
7806C
30.000 mm
42.000 mm
7.000 mm
0.300 mm
0.025 kg
7407BG
35.000 mm
100.000 mm
25.000 mm
1.000 mm
1.098 kg
7807C
35.000 mm
47.000 mm
7.000 mm
0.300 mm
0.028 kg
7408B
40.000 mm
110.000 mm
27.000 mm
1.500 mm
1.389 kg
7808C
40.000 mm
52.000 mm
7.000 mm
0.300 mm
0.031 kg
7408BG
40.000 mm
110.000 mm
27.000 mm
1.500 mm
1.389 kg
7409BG
45.000 mm
120.000 mm
29.000 mm
1.500 mm
1.770 kg
7410BG
50.000 mm
130.000 mm
31.000 mm
2.100 mm
1.860 kg
7411BG
55.000 mm
140.000 mm
33.000 mm
2.100 mm
2.690 kg