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
51322X
110
190
63
2
282000
755000
900
1300
53226X
130
190
47.9
1.5
183000
550000
1100
1600
51120
100
135
25
1
86000
268000
1700
2600
53322XU
110
190
67.2
72
2
282000
755000
900
1300
51226X
130
190
45
1.5
183000
550000
1100
1600
53220
100
150
40.9
1.1
135000
375000
1300
2000
51422X
110
230
95
3
415000
1150000
630
950
53226XU
130
190
47.9
53
1.5
183000
550000
1100
1600
51220
100
150
38
1.1
135000
375000
1300
2000
53422X
110
230
99.7
3
415000
1150000
630
950
53326X
130
225
80.3
2.1
350000
1030000
750
1100
53220U
100
150
40.9
45
1.1
135000
375000
1300
2000
53422XU
110
230
99.7
109
3
415000
1150000
630
950
51326X
130
225
75
2.1
350000
1030000
750
1100
53320
100
170
59.2
1.5
239000
595000
1000
1500
51124
120
155
25
1
90000
310000
1600
2400
53326XU
130
225
80.3
86
2.1
350000
1030000
750
1100
51320
100
170
55
1.5
239000
595000
1000
1500
51224
120
170
39
1.1
141000
430000
1200
1800
53426X
130
270
115.2
4
525000
1590000
530
800
53320U
100
170
59.2
64
1.5
239000
595000
1000
1500
53224
120
170
40.8
1.1
141000
430000
1200
1800
51426X
130
270
110
4
525000
1590000
530
800
53420X
100
210
90
3
370000
985000
710
1100