Single-Row Angular Contact Ball Bearings

**Introduction to NSK Single Row Angular Contact Ball Bearings: Precision Performance for Demanding Applications**

NSK’s Single Row Angular Contact Ball Bearings represent the pinnacle of precision motion and control technology, engineered to deliver exceptional performance in applications requiring high-speed operation, rigidity, and precise axial load handling. Designed with advanced materials, optimized geometries, and stringent manufacturing tolerances, these bearings are a critical component in industrial machinery, automotive systems, and high-precision equipment where reliability and efficiency are paramount.

### **Technical Features and Design Excellence**
Single Row Angular Contact Ball Bearings from NSK are distinguished by their unique internal design, featuring raceways that are offset relative to each other in the bearing axis direction. This configuration enables the bearing to support combined radial and axial loads—simultaneously or individually—with superior accuracy. Key technical features include:

– **Contact Angle Optimization**: Available in standard contact angles (typically 15°, 25°, 30°, or 40°), the bearings are tailored to balance thrust capacity and radial load performance. A steeper angle enhances axial load capacity, while a shallower angle improves high-speed capability.
– **Precision-Grade Manufacturing**: NSK employs ultra-precise grinding and super-finishing techniques to minimize friction, vibration, and noise, ensuring smooth operation even at extreme speeds.
– **High-Quality Materials**: Manufactured from premium bearing steel or specialty alloys (such as NSK’s proprietary HTF steel for high-temperature environments), these bearings resist wear, fatigue, and deformation under heavy loads.
– **Cage Designs**: Options include pressed steel, machined brass, or polymer cages (e.g., PEEK) to optimize performance in high-speed, high-temperature, or corrosive environments.

### **Performance Advantages**
NSK’s Single Row Angular Contact Ball Bearings excel in applications demanding precision and durability:

– **High-Speed Capability**: Low friction and optimized internal geometry allow for stable operation at elevated rotational speeds, critical for machine tool spindles and turbochargers.
– **Rigidity and Accuracy**: The bearings’ axial stiffness ensures minimal deflection under load, maintaining positional accuracy in CNC machines, robotics, and measuring instruments.
– **Extended Service Life**: Advanced heat treatment processes and surface coatings (such as NSK’s Super-TF treatment) enhance durability, reducing maintenance downtime in harsh industrial environments.

### **Typical Applications**
These bearings are indispensable across industries where precision motion control is essential:

– **Industrial Machinery**: Machine tool spindles, gearboxes, and pumps rely on these bearings for high-speed, high-precision rotation.
– **Automotive Systems**: Turbochargers, wheel hubs, and electric vehicle (EV) drivetrains benefit from their ability to handle dynamic loads and harsh operating conditions.
– **Aerospace and Robotics**: Used in actuators, flight control systems, and robotic joints, where compact design and reliability are critical.

By combining cutting-edge engineering with decades of expertise, NSK’s Single Row Angular Contact Ball Bearings provide unmatched performance, ensuring efficiency and longevity in the most demanding applications. Whether in high-speed automation or heavy-load industrial systems, NSK delivers the precision and reliability that industries trust.

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Designations Nominal Dimensions Basic Load Ratings Speeds
Limiting Speeds
d
mm
D
mm
B
mm
r(min.)
mm
r1(min.)
mm
Cr
N
C0r
N
Grease
min-1
Oil (Oil-bath)
min-1
7300AW
10
35
11
0.6
0.3
10200
4300
16000
22000
7300BW
10
35
11
0.6
0.3
9600
4050
14000
20000
7001AW
12
28
8
0.3
0.15
6350
2980
22000
30000
7201AW
12
32
10
0.6
0.3
8800
4050
20000
28000
7201BW
12
32
10
0.6
0.3
8150
3750
15000
20000
7201BEAT85
12
32
10
0.6
0.3
8500
3750
20000
30000
7301AW
12
37
12
1
0.6
10400
4500
15000
20000
7301BW
12
37
12
1
0.6
9750
4200
13000
18000
7301BEAT85
12
37
12
1
0.6
11600
4950
18000
26000
7002AW
15
32
9
0.3
0.15
6750
3450
19000
26000
7202AW
15
35
11
0.6
0.3
9500
4650
18000
24000
7202BW
15
35
11
0.6
0.3
8750
4300
13000
18000
7202BEAT85
15
35
11
0.6
0.3
10200
4800
18000
26000
7302AW
15
42
13
1
0.6
14700
7100
13000
17000
7302BW
15
42
13
1
0.6
13700
6600
11000
15000
7302BEAT85
15
42
13
1
0.6
15000
6900
16000
22000
7003AW
17
35
10
0.3
0.15
7050
3800
17000
24000
7203AW
17
40
12
0.6
0.3
11900
6000
16000
22000
7203BW
17
40
12
0.6
0.3
10900
5500
11000
15000
7203BEAT85
17
40
12
0.6
0.3
12100
6100
16000
22000
7203BEAT7
17
40
12
0.6
0.3
12100
6100
16000
22000
7303AW
17
47
14
1
0.6
17500
8650
11000
15000
7303BW
17
47
14
1
0.6
16300
8000
10000
14000
7303BEAT85
17
47
14
1
0.6
17600
8300
14000
20000