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
7907C
35.000 mm
55.000 mm
10.000 mm
0.600 mm
7908
40.000 mm
62.000 mm
12.000 mm
0.600 mm
7908C
40.000 mm
62.000 mm
12.000 mm
0.600 mm
7909
45.000 mm
68.000 mm
12.000 mm
0.600 mm
7909C
45.000 mm
68.000 mm
12.000 mm
0.600 mm
7910
50.000 mm
72.000 mm
12.000 mm
0.600 mm
7910C
50.000 mm
72.000 mm
12.000 mm
0.600 mm
7911
55.000 mm
80.000 mm
13.000 mm
1.000 mm
7911C
55.000 mm
80.000 mm
13.000 mm
1.000 mm
7912
60.000 mm
85.000 mm
13.000 mm
1.000 mm
7912C
60.000 mm
85.000 mm
13.000 mm
1.000 mm
7912CG/GNP4
60.000 mm
85.000 mm
13.000 mm
1.000 mm
0.191 kg
7913
65.000 mm
90.000 mm
13.000 mm
1.000 mm
7913C
65.000 mm
90.000 mm
13.000 mm
1.000 mm
7914
70.000 mm
100.000 mm
16.000 mm
1.000 mm
7914C
70.000 mm
100.000 mm
16.000 mm
1.000 mm
7915
75.000 mm
105.000 mm
16.000 mm
1.000 mm
7915C
75.000 mm
105.000 mm
16.000 mm
1.000 mm
7821C
105.000 mm
130.000 mm
13.000 mm
1.000 mm
0.310 kg
7822C
110.000 mm
140.000 mm
16.000 mm
1.000 mm
0.490 kg
7822CP4
110.000 mm
140.000 mm
16.000 mm
1.000 mm
0.490 kg
7824C
120.000 mm
150.000 mm
16.000 mm
1.000 mm
0.520 kg
7826C
130.000 mm
165.000 mm
18.000 mm
1.100 mm
0.910 kg
7828C
140.000 mm
175.000 mm
18.000 mm
1.100 mm
0.970 kg