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
51218
90
135
35
1.1
114000
310000
1400
2200
53218U
90
135
38.5
42
1.1
114000
310000
1400
2200
53318
90
155
54.6
1.5
214000
525000
1100
1700
51318
90
155
50
1.5
214000
525000
1100
1700
53318U
90
155
54.6
59
1.5
214000
525000
1100
1700
53418X
90
190
81.2
2.1
330000
825000
800
1200
51418X
90
190
77
2.1
330000
825000
800
1200
53418XU
90
190
81.2
88
2.1
330000
825000
800
1200
51111
55
78
16
0.6
35000
93000
2800
4300
53211
55
90
27.3
1
70000
159000
2200
3200
51211
55
90
25
1
70000
159000
2200
3200
53211U
55
90
27.3
30
1
70000
159000
2200
3200
53311
55
105
39.3
1.1
115000
244000
1600
2400
51311
55
105
35
1.1
115000
244000
1600
2400
53311U
55
105
39.3
42
1.1
115000
244000
1600
2400
53411
55
120
50.5
1.5
181000
350000
1300
1900
51411
55
120
48
1.5
181000
350000
1300
1900
53411U
55
120
50.5
55
1.5
181000
350000
1300
1900
51112
60
85
17
1
41500
113000
2600
4000
53212
60
95
28
1
71500
169000
2000
3000
51212
60
95
26
1
71500
169000
2000
3000
53212U
60
95
28
31
1
71500
169000
2000
3000
53312
60
110
38.3
1.1
119000
263000
1600
2400
51312
60
110
35
1.1
119000
263000
1600
2400