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
2304K
20.000 mm
52.000 mm
21.000 mm
1.100 mm
2304KC3
20.000 mm
52.000 mm
21.000 mm
1.100 mm
2305
25.000 mm
62.000 mm
24.000 mm
1.100 mm
0.333 kg
2305C3
25.000 mm
62.000 mm
24.000 mm
1.100 mm
0.333 kg
2305EEG15
25.000 mm
62.000 mm
24.000 mm
1.100 mm
0.367 kg
2305K
25.000 mm
62.000 mm
24.000 mm
1.100 mm
0.324 kg
2305KC3
25.000 mm
62.000 mm
24.000 mm
1.100 mm
2220
100.000 mm
180.000 mm
46.000 mm
2.100 mm
4.649 kg
2220C3
100.000 mm
180.000 mm
46.000 mm
2.100 mm
2220K
100.000 mm
180.000 mm
46.000 mm
2.100 mm
4.544 kg
2220KC3
100.000 mm
180.000 mm
46.000 mm
2.100 mm
4.544 kg
2221
105.000 mm
190.000 mm
50.000 mm
2.100 mm
5.652 kg
2221C3
105.000 mm
190.000 mm
50.000 mm
2.100 mm
2221K
105.000 mm
190.000 mm
50.000 mm
2.100 mm
2221KC3
105.000 mm
190.000 mm
50.000 mm
2.100 mm
2222
110.000 mm
200.000 mm
53.000 mm
2.100 mm
6.668 kg
2222C3
110.000 mm
200.000 mm
53.000 mm
2.100 mm
6.668 kg
2222K
110.000 mm
200.000 mm
53.000 mm
2.100 mm
2222KC3
110.000 mm
200.000 mm
53.000 mm
2.100 mm
2300
10.000 mm
35.000 mm
17.000 mm
0.600 mm
0.078 kg
2300C3
10.000 mm
35.000 mm
17.000 mm
0.600 mm
2300K
10.000 mm
35.000 mm
17.000 mm
0.600 mm
2300KC3
10.000 mm
35.000 mm
17.000 mm
0.600 mm
2301
12.000 mm
37.000 mm
17.000 mm
1.000 mm
0.088 kg