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
7318AW
90
190
43
3
1.1
188000
147000
2600
3400
7017AW
85
130
22
1.1
0.6
62000
56000
4300
5600
7318BW
90
190
43
3
1.1
172000
135000
2200
3000
7217AW
85
150
28
2
1
113000
89000
3800
5300
7318BEAT85
90
190
43
3
1.1
186000
146000
3200
4500
7217BW
85
150
28
2
1
102000
81000
2800
3800
7318BEAMR
90
190
43
3
1.1
186000
146000
3200
4500
7217BEAT85
85
150
28
2
1
106000
81500
3800
5600
7019A
95
145
24
1.5
1
73500
67000
4500
6300
7217BEAT7
85
150
28
2
1
106000
81500
3800
5600
7219AW
95
170
32
2.1
1.1
141000
111000
3400
4500
7016AW
80
125
22
1.1
0.6
60500
53000
4300
6000
7317AW
85
180
41
3
1.1
175000
133000
2600
3600
7219BW
95
170
32
2.1
1.1
127000
101000
2400
3200
7216AW
80
140
26
2
1
98000
76000
4000
5600
7317BW
85
180
41
3
1.1
160000
122000
2400
3200
7219BEAT85
95
170
32
2.1
1.1
136000
107000
3400
5000
7213AW
65
120
23
1.5
1
77500
58000
4800
6700
7314AW
70
150
35
2.1
1.1
137000
93500
3200
4300
7213BW
65
120
23
1.5
1
70000
52500
3400
4800