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
7304BGC3
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.146 kg
7306BG/GL
30.000 mm
72.000 mm
19.000 mm
1.100 mm
7304BL1BG
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.166 kg
7306BG/GL0520
30.000 mm
72.000 mm
19.000 mm
1.100 mm
7304BL1G
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.166 kg
7304BP6
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.137 kg
7304C
20.000 mm
52.000 mm
15.000 mm
1.100 mm
7305
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.232 kg
7305B
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.236 kg
7305BG
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.236 kg
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
7240
200.000 mm
360.000 mm
58.000 mm
4.000 mm
7304
20.000 mm
52.000 mm
15.000 mm
1.100 mm
7240B
200.000 mm
360.000 mm
58.000 mm
4.000 mm
26.310 kg
7304B
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.146 kg