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
SF4615PX1
230.000 mm
300.000 mm
35.000 mm
N/A
5.320 kg
SF4831
240.000 mm
310.000 mm
33.000 mm
2.100 mm
4.900 kg
SF4852PX1
240.000 mm
310.000 mm
33.000 mm
N/A
5.060 kg
SF4860
240.000 mm
320.000 mm
38.000 mm
N/A
6.960 kg
SF4910
243.000 mm
312.000 mm
33.000 mm
N/A
4.980 kg
SF5235
260.000 mm
330.000 mm
35.000 mm
N/A
5.320 kg
SF5245
260.000 mm
330.000 mm
35.000 mm
N/A
5.160 kg
SF5622
281.000 mm
354.000 mm
37.000 mm
N/A
6.500 kg
SF3607VPX2
180.000 mm
225.000 mm
22.000 mm
1.500 mm
1.180 kg
SF4224
210.000 mm
280.000 mm
35.000 mm
1.500 mm
4.560 kg
SF06A20
31.000 mm
82.000 mm
22.000 mm
N/A
0.548 kg
SF06A24
28.000 mm
72.000 mm
18.000 mm
1.100 mm
0.348 kg
SF06A27
28.000 mm
78.000 mm
20.000 mm
N/A
0.464 kg
SF0724
35.000 mm
56.400 mm
14.000 mm
N/A
0.151 kg
SF0725
35.000 mm
56.400 mm
14.000 mm
N/A
0.102 kg
SF0725/2E
35.000 mm
56.850 mm
0.472 mm
3.988 mm
0.102 kg
SF07A22
35.000 mm
55.000 mm
14.500 mm
0.600 mm
0.094 kg
SF0815
40.000 mm
63.600 mm
16.000 mm
N/A
SF0816
38.100 mm
67.000 mm
16.400 mm
N/A
0.196 kg
SF0914
45.000 mm
74.000 mm
18.000 mm
N/A
0.224 kg