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
7918
90.000 mm
125.000 mm
18.000 mm
1.100 mm
7918C
90.000 mm
125.000 mm
18.000 mm
1.100 mm
7919
90.000 mm
125.000 mm
18.000 mm
1.100 mm
7919/2AS
95.000 mm
130.000 mm
18.000 mm
1.100 mm
7919C
95.000 mm
130.000 mm
18.000 mm
1.100 mm
7920
100.000 mm
140.000 mm
20.000 mm
1.100 mm
7920C
100.000 mm
140.000 mm
20.000 mm
1.100 mm
7921
105.000 mm
145.000 mm
20.000 mm
1.100 mm
7921C
105.000 mm
145.000 mm
20.000 mm
1.100 mm
7922
110.000 mm
150.000 mm
20.000 mm
1.100 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