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
51238C3
190.000 mm
270.000 mm
62.000 mm
2.000 mm
11.300 kg
51306
30.000 mm
60.000 mm
21.000 mm
1.000 mm
0.259 kg
51240
200.000 mm
280.000 mm
62.000 mm
2.000 mm
11.800 kg
51306C3
30.000 mm
60.000 mm
21.000 mm
1.000 mm
0.259 kg
51240C3
200.000 mm
280.000 mm
62.000 mm
2.000 mm
11.800 kg
51244
220.000 mm
300.000 mm
63.000 mm
2.000 mm
13.000 kg
51244C3
220.000 mm
300.000 mm
63.000 mm
2.000 mm
13.000 kg
51248
240.000 mm
340.000 mm
78.000 mm
2.100 mm
21.600 kg
51248C3
240.000 mm
340.000 mm
78.000 mm
2.100 mm
21.600 kg
51252
260.000 mm
360.000 mm
79.000 mm
2.100 mm
24.200 kg
51252C3
260.000 mm
360.000 mm
79.000 mm
2.100 mm
24.200 kg
51256
280.000 mm
380.000 mm
80.000 mm
2.100 mm
26.100 kg
51256C3
280.000 mm
380.000 mm
80.000 mm
2.100 mm
26.100 kg
51260
300.000 mm
420.000 mm
95.000 mm
3.000 mm
40.600 kg
51260C3
300.000 mm
420.000 mm
95.000 mm
3.000 mm
40.600 kg
51268
340.000 mm
460.000 mm
96.000 mm
3.000 mm
0.018 kg
51236C3
180.000 mm
250.000 mm
56.000 mm
1.500 mm
8.340 kg
51305
25.000 mm
52.000 mm
18.000 mm
1.000 mm
0.162 kg
51222
110.000 mm
160.000 mm
38.000 mm
1.100 mm
2.415 kg
51222C3
110.000 mm
160.000 mm
38.000 mm
1.100 mm
2.415 kg