Single Direction Thrust Ball Bearing

**NTN Single Direction Thrust Ball Bearings: Precision, Durability, and High-Performance Load Handling**

NTN is a globally recognized leader in the design and manufacture of high-performance rolling bearings, delivering innovative solutions for industrial, automotive, and precision applications. Among its extensive product lineup, **NTN Single Direction Thrust Ball Bearings** stand out as a critical component for applications requiring robust axial load support, smooth operation, and long service life. Engineered with precision and durability in mind, these bearings are ideal for machinery and systems where space constraints, high thrust loads, and rotational accuracy are key considerations.

### **Technical Features & Design Excellence**
NTN’s Single Direction Thrust Ball Bearings are designed with a **separable structure**, allowing for easy installation and maintenance. The bearings consist of a **shaft washer (inner ring), housing washer (outer ring), and a ball-and-cage assembly**, ensuring optimal load distribution and reduced friction. Key technical features include:

– **High Axial Load Capacity**: Specifically engineered to handle **unidirectional axial loads**, these bearings efficiently support heavy thrust forces while minimizing radial load transfer.
– **Precision-Grade Components**: Manufactured to tight tolerances, NTN bearings ensure smooth rotation and minimal vibration, critical for high-speed applications.
– **Advanced Cage Designs**: Options include **stamped steel, machined brass, or polyamide cages**, each offering distinct advantages in speed capability, lubrication retention, and corrosion resistance.
– **Heat-Treated Races**: The hardened washer surfaces enhance wear resistance and extend bearing life under demanding conditions.
– **Lubrication Versatility**: Compatible with grease or oil lubrication, NTN thrust bearings are optimized for various operating environments, from high-temperature industrial settings to automotive transmissions.

### **Performance Advantages**
NTN’s Single Direction Thrust Ball Bearings deliver several performance benefits:

– **Reduced Friction & Energy Loss**: Precision-ground raceways and high-quality steel reduce rolling resistance, improving efficiency in power transmission systems.
– **Enhanced Durability**: Robust construction and premium materials resist wear, even in high-load, high-speed applications.
– **Compact & Lightweight Design**: Ideal for applications with limited axial space, such as automotive clutches, gearboxes, and steering systems.
– **Low Noise & Vibration**: Superior surface finishes and cage stability contribute to quieter operation, essential for precision machinery and electric vehicles.

### **Typical Applications**
These bearings are widely used across industries, including:

– **Automotive Systems**: Clutch release mechanisms, transmission thrust supports, and steering column assemblies.
– **Industrial Machinery**: Pumps, compressors, machine tool spindles, and agricultural equipment.
– **Aerospace & Defense**: Actuators, rotor systems, and landing gear components.
– **Energy & Heavy Equipment**: Wind turbine pitch control, hydraulic systems, and construction machinery.

By combining **advanced engineering, rigorous quality control, and application-specific customization**, NTN’s Single Direction Thrust Ball Bearings provide reliable performance in the most demanding environments. Whether in high-speed automotive drivetrains or heavy industrial equipment, NTN ensures precision, longevity, and efficiency—reinforcing its reputation as a trusted global bearing solutions provider.

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Part Number d D T r Mass
51203
17.000 mm
35.000 mm
12.000 mm
0.600 mm
0.050 kg
51203C3
17.000 mm
35.000 mm
12.000 mm
0.600 mm
0.050 kg
51204
20.000 mm
40.000 mm
14.000 mm
0.600 mm
0.081 kg
51204C3
20.000 mm
40.000 mm
14.000 mm
0.600 mm
0.081 kg
51205
25.000 mm
47.000 mm
15.000 mm
0.600 mm
0.107 kg
51205C3
25.000 mm
47.000 mm
15.000 mm
0.600 mm
0.107 kg
51205YP5
25.000 mm
47.000 mm
15.000 mm
0.600 mm
0.107 kg
51206
30.000 mm
52.000 mm
16.000 mm
0.600 mm
0.129 kg
51206C3
30.000 mm
52.000 mm
16.000 mm
0.600 mm
0.129 kg
51206YP5
30.000 mm
52.000 mm
16.000 mm
0.600 mm
0.129 kg
51207
35.000 mm
62.000 mm
18.000 mm
1.000 mm
0.200 kg
51207C3
35.000 mm
62.000 mm
18.000 mm
1.000 mm
0.200 kg
51208
40.000 mm
68.000 mm
19.000 mm
1.000 mm
0.258 kg
51208C3
40.000 mm
68.000 mm
19.000 mm
1.000 mm
0.258 kg
51160
300.000 mm
380.000 mm
62.000 mm
2.000 mm
17.500 kg
51160C3
300.000 mm
380.000 mm
62.000 mm
2.000 mm
17.500 kg
51164
320.000 mm
400.000 mm
63.000 mm
2.000 mm
17.400 kg
51164C3
320.000 mm
400.000 mm
63.000 mm
2.000 mm
17.400 kg
51168
340.000 mm
420.000 mm
64.000 mm
2.000 mm
18.600 kg
51168C3
340.000 mm
420.000 mm
64.000 mm
2.000 mm
18.600 kg
51172
360.000 mm
440.000 mm
65.000 mm
2.000 mm
21.100 kg
51172C3
360.000 mm
440.000 mm
65.000 mm
3.000 mm
21.100 kg
51176
380.000 mm
460.000 mm
65.000 mm
2.000 mm
22.300 kg
51176C3
380.000 mm
460.000 mm
65.000 mm
2.000 mm
22.300 kg