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
51115
75.000 mm
100.000 mm
19.000 mm
1.000 mm
0.400 kg
51128
140.000 mm
180.000 mm
31.000 mm
1.000 mm
1.775 kg
51115C3
75.000 mm
100.000 mm
19.000 mm
1.000 mm
0.400 kg
51128C3
140.000 mm
180.000 mm
31.000 mm
1.000 mm
1.775 kg
51116
80.000 mm
105.000 mm
19.000 mm
1.000 mm
0.401 kg
51128L1P5
140.000 mm
180.000 mm
31.000 mm
1.000 mm
1.775 kg
51116C3
80.000 mm
105.000 mm
19.000 mm
1.000 mm
0.401 kg
51117
85.000 mm
110.000 mm
19.000 mm
1.000 mm
0.444 kg
51117C3
85.000 mm
110.000 mm
19.000 mm
1.000 mm
0.444 kg
51118
90.000 mm
120.000 mm
22.000 mm
1.000 mm
0.645 kg
51118C3
90.000 mm
120.000 mm
22.000 mm
1.000 mm
0.645 kg
51120
100.000 mm
135.000 mm
25.000 mm
1.000 mm
0.959 kg
51120C3
100.000 mm
135.000 mm
25.000 mm
1.000 mm
0.959 kg
51122
110.000 mm
145.000 mm
25.000 mm
1.000 mm
1.036 kg
51122C3
110.000 mm
145.000 mm
25.000 mm
1.000 mm
1.036 kg
51124
120.000 mm
155.000 mm
25.000 mm
1.000 mm
1.207 kg
51124C3
120.000 mm
155.000 mm
25.000 mm
1.000 mm
1.207 kg
51126
130.000 mm
170.000 mm
30.000 mm
1.000 mm
1.640 kg
51107YP5
35.000 mm
52.000 mm
12.000 mm
0.600 mm
0.078 kg
51108
40.000 mm
60.000 mm
13.000 mm
0.600 mm
0.117 kg