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
1217C3
85.000 mm
150.000 mm
28.000 mm
2.032 mm
1217K
85.000 mm
150.000 mm
28.000 mm
2.000 mm
2.002 kg
1217KC3
85.000 mm
150.000 mm
28.000 mm
2.000 mm
2.002 kg
1208C3
40.000 mm
80.000 mm
18.000 mm
1.100 mm
0.413 kg
1208K
40.000 mm
80.000 mm
18.000 mm
1.100 mm
0.408 kg
1208KC3
40.000 mm
80.000 mm
18.000 mm
1.100 mm
0.408 kg
1209
45.000 mm
85.000 mm
19.000 mm
1.100 mm
0.461 kg
1209C3
45.000 mm
85.000 mm
19.000 mm
1.100 mm
0.461 kg
1209K
45.000 mm
85.000 mm
19.000 mm
1.100 mm
0.448 kg
1209KC3
45.000 mm
85.000 mm
19.000 mm
1.100 mm
0.448 kg
1210
50.000 mm
90.000 mm
20.000 mm
1.100 mm
0.523 kg
1210C3
50.000 mm
90.000 mm
20.000 mm
1.100 mm
0.523 kg
1210K
50.000 mm
90.000 mm
20.000 mm
1.100 mm
0.515 kg
1210KC3
50.000 mm
90.000 mm
20.000 mm
1.100 mm
0.515 kg
1211
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.685 kg
1211C3
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.685 kg
1211K
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.677 kg
1211KC3
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.677 kg
1212
60.000 mm
110.000 mm
22.000 mm
1.500 mm
0.869 kg
1212C3
60.000 mm
110.000 mm
22.000 mm
1.500 mm
1212K
60.000 mm
110.000 mm
22.000 mm
1.500 mm
0.869 kg
1212KC3
60.000 mm
110.000 mm
22.000 mm
1.500 mm
0.869 kg
1213
65.000 mm
120.000 mm
23.000 mm
1.500 mm
1204C3
20.000 mm
47.000 mm
14.000 mm
1.000 mm
0.113 kg