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
7302B
15.000 mm
42.000 mm
13.000 mm
1.000 mm
0.086 kg
7302BG
15.000 mm
42.000 mm
13.000 mm
1.000 mm
0.083 kg
7302C
15.000 mm
42.000 mm
13.000 mm
1.000 mm
7303
17.000 mm
47.000 mm
14.000 mm
1.000 mm
7303B
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.116 kg
7303BG
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.116 kg
7238B
190.000 mm
340.000 mm
55.000 mm
4.000 mm
22.100 kg
7303BL1G
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.130 kg
7238BG
190.000 mm
340.000 mm
55.000 mm
4.000 mm
22.720 kg
7303C
17.000 mm
47.000 mm
14.000 mm
1.000 mm
7230BG
150.000 mm
270.000 mm
45.000 mm
3.000 mm
11.300 kg
7230BL1BG
150.000 mm
270.000 mm
45.000 mm
3.000 mm
11.254 kg
7230C
150.000 mm
270.000 mm
45.000 mm
3.000 mm
7232
160.000 mm
290.000 mm
48.000 mm
3.000 mm
7232B
160.000 mm
290.000 mm
48.000 mm
3.000 mm
14.100 kg
7232BG
160.000 mm
290.000 mm
48.000 mm
3.000 mm
14.100 kg
7232CP4
160.000 mm
290.000 mm
48.000 mm
3.000 mm
13.740 kg
7234
170.000 mm
310.000 mm
52.000 mm
4.000 mm
7234B
170.000 mm
310.000 mm
52.000 mm
4.000 mm
18.600 kg
7234BG
170.000 mm
310.000 mm
52.000 mm
4.000 mm
17.400 kg