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
7334B
170
360
72
4
1.5
390000
445000
1400
2000
7328B
140
300
62
4
1.5
305000
310000
1700
2400
7036A
180
280
46
2.1
1.1
228000
252000
1900
2400
7030A
150
225
35
2.1
1.1
151000
154000
2400
3000
7236A
180
320
52
4
1.5
335000
385000
1700
2200
7230A
150
270
45
3
1.1
273000
280000
2000
2800
7236B
180
320
52
4
1.5
305000
350000
1500
2000
7230B
150
270
45
3
1.1
247000
254000
1800
2600
7336A
180
380
75
4
1.5
450000
535000
1500
2000
7330A
150
320
65
4
1.5
350000
370000
1800
2400
7336B
180
380
75
4
1.5
410000
490000
1300
1800
7330B
150
320
65
4
1.5
320000
340000
1600
2200
7038A
190
290
46
2.1
1.1
246000
280000
1800
2400
7032A
160
240
38
2.1
1.1
171000
176000
2200
2800
7238A
190
340
55
4
1.5
345000
410000
1600
2200
7232A
160
290
48
3
1.1
289000
305000
1900
2600
7238B
190
340
55
4
1.5
310000
375000
1400
2000
7320BW
100
215
47
3
1.1
209000
178000
2000
2800
7222BEAMR
110
200
38
2.1
1.1
169000
144000
2800
4300
7226A
130
230
40
3
1.1
208000
193000
2400
3200