Single Direction Thrust Ball Bearings

**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
51411C3
55.000 mm
120.000 mm
48.000 mm
1.500 mm
2.520 kg
51420C3
100.000 mm
210.000 mm
85.000 mm
3.000 mm
14.700 kg
51412
60.000 mm
130.000 mm
51.000 mm
1.500 mm
3.120 kg
51412C3
60.000 mm
130.000 mm
51.000 mm
1.500 mm
3.120 kg
51413
65.000 mm
140.000 mm
56.000 mm
2.000 mm
4.025 kg
51413C3
65.000 mm
140.000 mm
56.000 mm
2.000 mm
4.025 kg
51414
70.000 mm
150.000 mm
60.000 mm
2.000 mm
4.860 kg
51414C3
70.000 mm
150.000 mm
60.000 mm
2.000 mm
4.860 kg
51415
75.000 mm
160.000 mm
65.000 mm
2.000 mm
5.970 kg
51415C3
75.000 mm
160.000 mm
65.000 mm
2.000 mm
5.970 kg
51416
80.000 mm
170.000 mm
68.000 mm
2.100 mm
7.770 kg
51416C3
80.000 mm
170.000 mm
68.000 mm
2.100 mm
7.770 kg
51417
85.000 mm
180.000 mm
72.000 mm
2.100 mm
9.170 kg
51417C3
85.000 mm
180.000 mm
72.000 mm
2.100 mm
9.170 kg
51418
90.000 mm
190.000 mm
77.000 mm
2.100 mm
11.000 kg
51418C3
90.000 mm
190.000 mm
77.000 mm
2.100 mm
11.000 kg
51411
55.000 mm
120.000 mm
48.000 mm
1.500 mm
2.520 kg
51420
100.000 mm
210.000 mm
85.000 mm
3.000 mm
14.700 kg
51338C3
190.000 mm
320.000 mm
105.000 mm
4.000 mm
35.000 kg
51340
200.000 mm
340.000 mm
110.000 mm
4.000 mm
41.800 kg