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
51102
15
28
9
0.3
10600
16800
6300
9500
51202
15
32
12
0.6
16700
24800
5000
7500
53202
15
32
13.3
0.6
16700
24800
5000
7500
53202U
15
32
13.3
15
0.6
16700
24800
5000
7500
51103
17
30
9
0.3
11400
19500
6000
9000
51203
17
35
12
0.6
17300
27300
4800
7500
53203
17
35
13.2
0.6
17300
27300
4800
7500
53203U
17
35
13.2
15
0.6
17300
27300
4800
7500
51104
20
35
10
0.3
15100
26600
5300
8000
51204
20
40
14
0.6
22500
37500
4300
6300
53204
20
40
14.7
0.6
22500
37500
4300
6300
53204U
20
40
14.7
17
0.6
22500
37500
4300
6300
51105
25
42
11
0.6
19700
37000
4800
7100
53205
25
47
16.7
0.6
28000
50500
3800
5600
51205
25
47
15
0.6
28000
50500
3800
5600
53205U
25
47
16.7
19
0.6
28000
50500
3800
5600
53305
25
52
19.8
1
36000
61500
3200
5000
51305
25
52
18
1
36000
61500
3200
5000
53305U
25
52
19.8
22
1
36000
61500
3200
5000
51405
25
60
24
1
56000
89500
2600
4000
53405
25
60
26.4
1
56000
89500
2600
4000
53405U
25
60
26.4
29
1
56000
89500
2600
4000
51106
30
47
11
0.6
20600
42000
4300
6700
51206
30
52
16
0.6
29500
58000
3400
5300