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
7212BEAT7
60
110
22
1.5
1
64500
45000
5300
7500
7312AW
60
130
31
2.1
1.1
108000
71500
3800
5000
7312BEAT85
60
130
31
2.1
1.1
107000
68500
4800
6700
7312BEAMR
60
130
31
2.1
1.1
107000
68500
4800
6700
7312BEAT7
60
130
31
2.1
1.1
107000
68500
4800
6700
7312BEAW
60
130
31
2.1
1.1
107000
68500
3400
4500
7013AW
65
100
18
1.1
0.6
38500
33000
5300
7500
7213AW
65
120
23
1.5
1
77500
58000
4800
6700
7213BW
65
120
23
1.5
1
70000
52500
3400
4800
7213BEAT85
65
120
23
1.5
1
73500
53500
4800
7100
7213BEAMR
65
120
23
1.5
1
73500
53500
4800
7100
7213BEAT7
65
120
23
1.5
1
73500
53500
4800
7100
7313AW
65
140
33
2.1
1.1
122000
82000
3600
4800
7313BEAT85
65
140
33
2.1
1.1
119000
77000
4300
6300
7313BEAMR
65
140
33
2.1
1.1
119000
77000
4300
6300
7313BEAT7
65
140
33
2.1
1.1
119000
77000
4300
6300
7313BEAW
65
140
33
2.1
1.1
119000
77000
3200
4300
7014AW
70
110
20
1.1
0.6
48500
41500
5000
6700
7214AW
70
125
24
1.5
1
84000
63500
4500
6300
7214BW
70
125
24
1.5
1
76000
58000
3200
4500
7214BEAT85
70
125
24
1.5
1
79500
58500
4500
6700
7214BEAMR
70
125
24
1.5
1
79500
58500
4500
6700
7214BEAT7
70
125
24
1.5
1
79500
58500
4500
6700
7314AW
70
150
35
2.1
1.1
137000
93500
3200
4300