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
1309C3
45.000 mm
100.000 mm
25.000 mm
1.500 mm
0.946 kg
1309K
45.000 mm
100.000 mm
25.000 mm
1.500 mm
0.938 kg
1309KC3
45.000 mm
100.000 mm
25.000 mm
1.500 mm
0.944 kg
1310
50.000 mm
110.000 mm
27.000 mm
2.000 mm
1.195 kg
1310C3
50.000 mm
110.000 mm
27.000 mm
2.000 mm
1.195 kg
1310G15
50.000 mm
110.000 mm
27.000 mm
2.000 mm
1.230 kg
1310K
50.000 mm
110.000 mm
27.000 mm
2.000 mm
1.183 kg
1310KC3
50.000 mm
110.000 mm
27.000 mm
2.000 mm
1.183 kg
1311
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.570 kg
1311C3
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.570 kg
1311K
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.548 kg
1311KC3
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.548 kg
1311L0
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.570 kg
1312
60.000 mm
130.000 mm
31.000 mm
2.100 mm
1.954 kg
1312C3
60.000 mm
130.000 mm
31.000 mm
2.100 mm
1.954 kg
1312K
60.000 mm
130.000 mm
31.000 mm
2.100 mm
1.933 kg
1312KC3
60.000 mm
130.000 mm
31.000 mm
2.100 mm
1.954 kg
1313
65.000 mm
140.000 mm
33.000 mm
2.100 mm
2.417 kg
1313C3
65.000 mm
140.000 mm
33.000 mm
2.100 mm
2.417 kg
1304K
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.158 kg
1304KC3
20.000 mm
52.000 mm
15.000 mm
1.100 mm
0.160 kg
1305
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.254 kg
1305C3
25.000 mm
62.000 mm
17.000 mm
1.100 mm
1305G15
25.000 mm
62.000 mm
17.000 mm
1.100 mm