Single-Direction Thrust Ball Bearings

**Introduction to NSK’s Single Direction Thrust Ball Bearings: Precision Motion and Control for Demanding Applications**

In the realm of precision motion and control, NSK stands as a global leader, delivering high-performance bearing solutions engineered for reliability, efficiency, and durability. Among its extensive portfolio, NSK’s **Single Direction Thrust Ball Bearings** excel in applications requiring robust axial load support with minimal friction, making them indispensable in industrial machinery, automotive systems, and precision equipment.

### **Technical Features and Design Excellence**
NSK’s Single Direction Thrust Ball Bearings are meticulously designed to handle unidirectional axial loads while maintaining smooth rotational performance. Key features include:
– **Optimized Raceway Geometry**: Precision-ground raceways and high-quality steel balls ensure uniform load distribution, reducing stress concentrations and extending service life.
– **Robust Cage Designs**: Available in pressed steel, machined brass, or polymer cages, these bearings minimize friction and wear while maintaining alignment under high-speed or high-load conditions.
– **Material Innovation**: Advanced steel alloys and heat treatment processes enhance hardness and fatigue resistance, ensuring consistent performance in harsh environments.
– **Sealing and Lubrication Options**: Customizable with shields, seals, or specialized lubricants to suit contamination-prone or high-temperature applications.

### **Performance Advantages**
NSK’s thrust ball bearings deliver measurable benefits for critical motion systems:
– **High Load Capacity**: Engineered to withstand significant axial loads without compromising rotational accuracy, ideal for heavy-duty presses, gearboxes, or lifting equipment.
– **Low Friction and Energy Efficiency**: Precision manufacturing reduces torque losses, contributing to energy savings in automotive transmissions or industrial pumps.
– **Long Service Life**: Superior materials and lubrication technologies minimize wear, reducing maintenance downtime in continuous-operation machinery.
– **Compact and Lightweight**: Space-saving designs enable integration into compact assemblies, such as robotics or aerospace actuators.

### **Typical Applications**
These bearings are widely deployed across industries where axial load management is critical:
– **Industrial Machinery**: Used in machine tool spindles, conveyor systems, and hydraulic pumps to ensure precise axial positioning.
– **Automotive Systems**: Found in clutch release mechanisms, steering columns, and transmission systems to handle dynamic thrust forces.
– **Precision Equipment**: Essential for medical devices, robotics, and optical instruments requiring smooth, backlash-free motion.

NSK’s Single Direction Thrust Ball Bearings exemplify the company’s commitment to innovation, combining cutting-edge engineering with rigorous quality standards. Whether in high-speed automation or rugged industrial environments, these bearings provide the reliability and precision demanded by modern motion control systems. By leveraging NSK’s expertise, engineers can optimize performance, reduce operational costs, and extend the lifespan of critical machinery.

For applications where axial load capacity and precision are non-negotiable, NSK’s thrust ball bearings deliver unmatched performance—proving why they remain the preferred choice for engineers worldwide.

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Designations Nominal Dimensions Basic Load Ratings Speeds
Limiting Speeds
d
mm
D
mm
T,T3
mm
T4
mm
r(min.)
mm
Ca
N
C0a
N
Grease
min-1
Oil (Oil-bath)
min-1
53208
40
68
20.3
1
47500
98500
2800
4300
53409
45
100
42.4
1.1
128000
246000
1600
2400
51208
40
68
19
1
47500
98500
2800
4300
51409
45
100
39
1.1
128000
246000
1600
2400
53208U
40
68
20.3
23
1
47500
98500
2800
4300
53409U
45
100
42.4
46
1.1
128000
246000
1600
2400
51308
40
78
26
1
70000
135000
2200
3400
51110
50
70
14
0.6
29000
75500
3200
4800
53308
40
78
28.5
1
70000
135000
2200
3400
51210
50
78
22
1
49000
111000
2400
3600
51107
35
52
12
0.6
22100
49500
4000
6000
53308U
40
78
28.5
31
1
70000
135000
2200
3400
53210
50
78
23.5
1
49000
111000
2400
3600
53207
35
62
19.9
1
39500
78000
3000
4500
53408
40
90
38.2
1.1
103000
188000
1700
2600
53210U
50
78
23.5
26
1
49000
111000
2400
3600
53202
15
32
13.3
0.6
16700
24800
5000
7500
53305U
25
52
19.8
22
1
36000
61500
3200
5000
53202U
15
32
13.3
15
0.6
16700
24800
5000
7500
51405
25
60
24
1
56000
89500
2600
4000