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
7314BEAT85
70
150
35
2.1
1.1
129000
87500
4000
6000
7314BEAMR
70
150
35
2.1
1.1
129000
87500
4000
6000
7314BEAT7
70
150
35
2.1
1.1
129000
87500
4000
6000
7314BEAW
70
150
35
2.1
1.1
129000
87500
2800
4000
7015AW
75
115
20
1.1
0.6
49500
43500
4800
6300
7215AW
75
130
25
1.5
1
83500
64500
4300
6000
7215BW
75
130
25
1.5
1
75500
58500
3200
4300
7215BEAT85
75
130
25
1.5
1
82500
63500
4300
6300
7215BEAMR
75
130
25
1.5
1
82500
63500
4300
6300
7315AW
75
160
37
2.1
1.1
149000
106000
3000
4000
7315BEAT85
75
160
37
2.1
1.1
140000
98500
3800
5600
7315BEAMR
75
160
37
2.1
1.1
140000
98500
3800
5600
7315BEAW
75
160
37
2.1
1.1
140000
98500
2800
3800
7308BEAT7
40
90
23
1.5
1
55500
33000
7100
10000
7308BEAW
40
90
23
1.5
1
55500
33000
5000
6700
7009AW
45
75
16
1
0.6
25400
18700
7500
10000
7209AW
45
85
19
1.1
0.6
43500
28700
6700
9500
7209BW
45
85
19
1.1
0.6
39500
26200
5000
6700
7209BEAT85
45
85
19
1.1
0.6
42500
27100
7100
10000
7209BEAMR
45
85
19
1.1
0.6
42500
27100
7100
10000
7209BEAT7
45
85
19
1.1
0.6
42500
27100
7100
10000
7309AW
45
100
25
1.5
1
70000
43500
5000
6700
7309BW
45
100
25
1.5
1
64000
40000
4500
6000
7309BEAT85
45
100
25
1.5
1
65500
39500
6300
9000