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
1204J
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.113 kg
1204K
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.111 kg
1204KC3
20.000 mm
47.000 mm
14.000 mm
1.000 mm
1205
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.132 kg
1205C3
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.134 kg
1205C4
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.134 kg
1205K
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.131 kg
1205KC3
25.000 mm
52.000 mm
15.000 mm
1.000 mm
0.131 kg
1205T2C4
25.000 mm
52.000 mm
15.000 mm
1.000 mm
1206
30.000 mm
62.000 mm
16.000 mm
1.000 mm
0.218 kg
1206C3
30.000 mm
62.000 mm
16.000 mm
1.000 mm
0.218 kg
1206K
30.000 mm
62.000 mm
16.000 mm
1.000 mm
0.215 kg
1206KC3
30.000 mm
62.000 mm
16.000 mm
1.000 mm
0.215 kg
1207
35.000 mm
72.000 mm
17.000 mm
1.100 mm
0.318 kg
1207C3
35.000 mm
72.000 mm
17.000 mm
1.100 mm
0.318 kg
1207K
35.000 mm
72.000 mm
17.000 mm
1.100 mm
0.315 kg
1207KC3
35.000 mm
72.000 mm
17.000 mm
1.100 mm
0.315 kg
1207L1C3
35.000 mm
72.000 mm
17.000 mm
1.100 mm
1208
40.000 mm
80.000 mm
18.000 mm
1.100 mm
0.413 kg
1200
10.000 mm
30.000 mm
9.000 mm
0.600 mm
0.032 kg
1200C3
10.000 mm
30.000 mm
9.000 mm
0.600 mm
1200K
10.000 mm
30.000 mm
9.000 mm
0.600 mm
1200KC3
10.000 mm
30.000 mm
9.000 mm
0.600 mm
1201
12.000 mm
32.000 mm
10.000 mm
0.600 mm
0.041 kg