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
7944
220.000 mm
300.000 mm
38.000 mm
2.100 mm
7928
140.000 mm
190.000 mm
24.000 mm
1.500 mm
7948
240.000 mm
320.000 mm
38.000 mm
2.100 mm
7928C
140.000 mm
190.000 mm
24.000 mm
1.500 mm
7952
260.000 mm
360.000 mm
46.000 mm
2.100 mm
7928CT1B
140.000 mm
190.000 mm
24.000 mm
1.500 mm
1.660 kg
7930
150.000 mm
210.000 mm
28.000 mm
2.000 mm
7930C
150.000 mm
210.000 mm
28.000 mm
2.000 mm
7930CT1B
150.000 mm
210.000 mm
28.000 mm
2.000 mm
2.590 kg
7932
160.000 mm
220.000 mm
28.000 mm
2.000 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
7915CG/GNP4
75.000 mm
105.000 mm
16.000 mm
1.000 mm
0.349 kg
7922C
110.000 mm
150.000 mm
20.000 mm
1.100 mm
7916
80.000 mm
110.000 mm
16.000 mm
1.000 mm
7924
120.000 mm
165.000 mm
22.000 mm
1.100 mm
7916C
80.000 mm
110.000 mm
16.000 mm
1.000 mm
7924C
120.000 mm
165.000 mm
22.000 mm
1.100 mm
7916CG/GNP4
80.000 mm
110.000 mm
16.000 mm
1.000 mm
0.370 kg