Self Aligning Ball Bearing

**NTN Self-Aligning Ball Bearings: Precision, Durability, and Versatility for Demanding Applications**

NTN is a globally recognized leader in the design and manufacture of high-performance rolling bearings, with its **Self-Aligning Ball Bearings** standing out as a critical solution for applications requiring exceptional misalignment compensation, reduced friction, and long service life. These bearings are engineered to accommodate shaft misalignment and mounting errors while maintaining smooth operation—making them indispensable in industrial machinery, automotive systems, and precision equipment where reliability under dynamic conditions is paramount.

### **Technical Features & Design Advantages**
NTN’s **Self-Aligning Ball Bearings** feature a unique double-row ball and spherical raceway design in the outer ring, allowing the inner ring and balls to pivot freely. This self-aligning capability compensates for **angular misalignment up to 3 degrees**, reducing stress on adjacent components and preventing premature wear. Key technical highlights include:

– **Robust Construction:** Manufactured from high-grade chrome steel or specialty materials (e.g., stainless steel for corrosive environments), these bearings deliver high load capacity and resistance to fatigue.
– **Low-Friction Performance:** Precision-ground raceways and optimized ball-to-groove contact minimize friction, enhancing efficiency and reducing heat generation.
– **Sealing & Lubrication Options:** NTN offers variants with **contact (LLU) or non-contact (LLB) seals**, as well as shields, to protect against contaminants. Pre-lubricated with high-performance grease for extended maintenance intervals.
– **High-Speed Capability:** Advanced cage designs (stamped steel, machined brass, or polymer) ensure stability at elevated speeds, critical for automotive and industrial applications.

### **Performance Benefits**
NTN’s Self-Aligning Ball Bearings excel in **harsh or misaligned operating conditions**, providing:
– **Extended Service Life:** Reduced wear from misalignment lowers downtime and replacement costs.
– **Vibration & Noise Dampening:** Smoother rotation improves performance in precision equipment like pumps and fans.
– **Versatility:** Suitable for radial and moderate axial loads, with options for heavy-duty industrial or high-speed automotive use.

### **Typical Applications**
These bearings are widely used across industries, including:
– **Industrial Machinery:** Conveyors, gearboxes, textile spindles, and agricultural equipment where shaft deflection occurs.
– **Automotive Systems:** Auxiliary units (alternators, tensioners), electric motors, and drivetrain components requiring misalignment tolerance.
– **Precision Equipment:** Medical devices, robotics, and HVAC systems where smooth, low-maintenance operation is critical.

NTN’s commitment to **innovation and quality control** ensures that its Self-Aligning Ball Bearings meet stringent ISO and ABMA standards, providing engineers with a reliable solution for challenging mechanical systems. Whether in high-load industrial environments or high-speed automotive applications, NTN’s bearings deliver **durability, efficiency, and performance under misaligned conditions.**

For applications demanding **resilience and precision**, NTN’s Self-Aligning Ball Bearings offer a proven, high-performance solution.

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Part Number d D B r Mass
2312C3
60.000 mm
130.000 mm
46.000 mm
2.100 mm
2309K
45.000 mm
100.000 mm
36.000 mm
1.500 mm
1.192 kg
2312K
60.000 mm
130.000 mm
46.000 mm
2.100 mm
2.531 kg
2307C3
35.000 mm
80.000 mm
31.000 mm
1.500 mm
0.668 kg
2307EEG15
35.000 mm
80.000 mm
31.000 mm
1.500 mm
0.744 kg
2307K
35.000 mm
80.000 mm
31.000 mm
1.500 mm
0.657 kg
2307KC3
35.000 mm
80.000 mm
31.000 mm
1.500 mm
0.657 kg
2307L1
35.000 mm
80.000 mm
31.000 mm
1.500 mm
0.730 kg
2308
40.000 mm
90.000 mm
33.000 mm
1.500 mm
0.913 kg
2308C3
40.000 mm
90.000 mm
33.000 mm
1.500 mm
0.889 kg
2308EEG15
40.000 mm
90.000 mm
33.000 mm
1.500 mm
1.010 kg
2308K
40.000 mm
90.000 mm
33.000 mm
1.500 mm
0.893 kg
2305KG15
25.000 mm
62.000 mm
24.000 mm
1.100 mm
2308KC3
40.000 mm
90.000 mm
33.000 mm
1.500 mm
0.893 kg
2306
30.000 mm
72.000 mm
27.000 mm
1.100 mm
0.494 kg
2308L1C3
40.000 mm
90.000 mm
33.000 mm
1.500 mm
2306C3
30.000 mm
72.000 mm
27.000 mm
1.100 mm
0.494 kg
2308SKC3
40.000 mm
90.000 mm
33.000 mm
1.500 mm
2306EEG15
30.000 mm
72.000 mm
27.000 mm
1.100 mm
0.554 kg
2309
45.000 mm
100.000 mm
36.000 mm
1.500 mm