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
1302
15.000 mm
42.000 mm
13.000 mm
1.000 mm
1302C3
15.000 mm
42.000 mm
13.000 mm
1.000 mm
0.092 kg
1302K
15.000 mm
42.000 mm
13.000 mm
1.000 mm
1302KC3
15.000 mm
42.000 mm
13.000 mm
1.000 mm
1303
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.127 kg
1303C3
17.000 mm
47.000 mm
14.000 mm
1.000 mm
0.127 kg
1303G14
17.000 mm
47.000 mm
14.000 mm
1.000 mm
1303K
17.000 mm
47.000 mm
14.000 mm
1.000 mm
1303KC3
17.000 mm
47.000 mm
14.000 mm
1.000 mm
1304
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.162 kg
1304C3
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.162 kg
1218
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.502 kg
1218C3
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.502 kg
1218K
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.476 kg
1218KC3
90.000 mm
160.000 mm
30.000 mm
2.000 mm
2.476 kg
1219
95.000 mm
170.000 mm
32.000 mm
2.100 mm
1219C3
95.000 mm
170.000 mm
32.000 mm
2.100 mm
3.047 kg
1219K
95.000 mm
170.000 mm
32.000 mm
2.100 mm
3.020 kg
1219KC3
95.000 mm
170.000 mm
32.000 mm
2.100 mm
3.020 kg
1220
100.000 mm
180.000 mm
34.000 mm
2.100 mm
1220C3
100.000 mm
180.000 mm
34.000 mm
2.100 mm
3.666 kg
1220K
100.000 mm
180.000 mm
34.000 mm
2.100 mm
3.621 kg
1220KC3
100.000 mm
180.000 mm
34.000 mm
2.100 mm
1221
105.000 mm
190.000 mm
36.000 mm
2.100 mm
4.352 kg