**NTN Angular Contact Ball Bearings & Four Point Ball Bearings: Precision Performance for Demanding Applications**

NTN is a globally recognized leader in bearing technology, delivering high-performance solutions for industrial machinery, automotive systems, and precision equipment. Among its extensive range of rolling bearings, NTN’s **Angular Contact Ball Bearings** and **Four Point Ball Bearings** stand out for their ability to handle combined radial and axial loads with exceptional precision, durability, and efficiency. These bearings are engineered to meet the rigorous demands of high-speed operations, heavy loads, and challenging environments, making them indispensable in advanced mechanical systems.

### **Technical Features & Design Advantages**

#### **Angular Contact Ball Bearings**
NTN’s **Angular Contact Ball Bearings** are designed with a contact angle between the races and balls, enabling them to support both radial and axial loads simultaneously. Key features include:
– **Optimized Contact Angles (15°, 25°, 30°, 40°)** – Tailored for varying load conditions, with higher angles providing greater axial load capacity.
– **Precision-Ground Raceways** – Minimize friction and vibration for smooth, high-speed operation.
– **Single-Row & Double-Row Configurations** – Single-row bearings handle moderate loads, while double-row designs offer enhanced rigidity and load distribution.
– **Materials & Heat Treatment** – High-grade steel with advanced heat treatment extends bearing life under extreme stress.

These bearings excel in applications requiring **high rotational accuracy**, such as machine tool spindles, robotics, and electric motors.

#### **Four Point Ball Bearings (4-Point Contact Bearings)**
NTN’s **Four Point Ball Bearings** are a specialized type of angular contact bearing designed to support **bidirectional axial loads** along with radial loads in a compact design. Their unique raceway geometry allows the balls to make contact at four points, distributing loads evenly. Key benefits include:
– **Bidirectional Axial Load Capacity** – Eliminates the need for paired bearing arrangements, saving space and reducing complexity.
– **High Rigidity & Low Friction** – Ideal for applications with oscillating or reversing loads.
– **Sealed & Lubricated Options** – Extend service life in contaminated environments.

### **Performance Advantages**
– **Enhanced Load Capacity** – Handles both thrust and radial forces efficiently.
– **High-Speed Capability** – Precision manufacturing reduces heat generation and wear.
– **Reduced Maintenance** – Advanced sealing and lubrication options minimize downtime.
– **Space-Saving Designs** – Particularly beneficial in automotive and aerospace applications where compactness is critical.

### **Typical Applications**
– **Industrial Machinery:** CNC spindles, gearboxes, pumps, and compressors.
– **Automotive Systems:** Wheel hubs, transmissions, and electric vehicle motors.
– **Precision Equipment:** Robotics, medical devices, and aerospace actuators.

NTN’s **Angular Contact Ball Bearings** and **Four Point Ball Bearings** are engineered to deliver **reliability, efficiency, and longevity** in the most demanding environments. By leveraging advanced materials, precision manufacturing, and innovative design, NTN ensures optimal performance across a wide range of industrial and automotive applications.