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
51324X
120
210
70
2.1
330000
930000
800
1200
53324X
120
210
74.1
2.1
330000
930000
800
1200
53324XU
120
210
74.1
80
2.1
330000
930000
800
1200
53424X
120
250
107.3
4
480000
1400000
600
900
51424X
120
250
102
4
480000
1400000
600
900
53424XU
120
250
107.3
118
4
480000
1400000
600
900
51126
130
170
30
1
105000
350000
1400
2000
53226X
130
190
47.9
1.5
183000
550000
1100
1600
51226X
130
190
45
1.5
183000
550000
1100
1600
53226XU
130
190
47.9
53
1.5
183000
550000
1100
1600
53326X
130
225
80.3
2.1
350000
1030000
750
1100
51326X
130
225
75
2.1
350000
1030000
750
1100
53326XU
130
225
80.3
86
2.1
350000
1030000
750
1100
53426X
130
270
115.2
4
525000
1590000
530
800
51426X
130
270
110
4
525000
1590000
530
800
53426XU
130
270
115.2
128
4
525000
1590000
530
800
51115
75
100
19
1
43500
131000
2200
3400
53215
75
110
28.3
1
78000
209000
1800
2800
51215
75
110
27
1
78000
209000
1800
2800
53215U
75
110
28.3
32
1
78000
209000
1800
2800
53315
75
135
48.1
1.5
159000
365000
1300
1900
51315
75
135
44
1.5
159000
365000
1300
1900
53315U
75
135
48.1
52
1.5
159000
365000
1300
1900
51415
75
160
65
2
254000
560000
950
1400