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
1305K
25.000 mm
62.000 mm
17.000 mm
1.100 mm
0.251 kg
1305KC3
25.000 mm
62.000 mm
17.000 mm
1.100 mm
1306
30.000 mm
72.000 mm
19.000 mm
1.100 mm
0.383 kg
1306C3
30.000 mm
72.000 mm
19.000 mm
1.100 mm
0.383 kg
1306K
30.000 mm
72.000 mm
19.000 mm
1.100 mm
0.378 kg
1306KC3
30.000 mm
72.000 mm
19.000 mm
1.100 mm
0.378 kg
1306L1C3
30.000 mm
72.000 mm
19.000 mm
1.100 mm
0.395 kg
1307
35.000 mm
80.000 mm
21.000 mm
1.500 mm
0.500 kg
1307C3
35.000 mm
80.000 mm
21.000 mm
1.500 mm
1307K
35.000 mm
80.000 mm
21.000 mm
1.500 mm
0.496 kg
1307KC3
35.000 mm
80.000 mm
21.000 mm
1.500 mm
0.496 kg
1308
40.000 mm
90.000 mm
23.000 mm
1.500 mm
0.702 kg
1308C3
40.000 mm
90.000 mm
23.000 mm
1.500 mm
0.702 kg
1308K
40.000 mm
90.000 mm
23.000 mm
1.500 mm
0.694 kg
1308KC3
40.000 mm
90.000 mm
23.000 mm
1.500 mm
0.694 kg
1226
130.000 mm
230.000 mm
46.000 mm
3.000 mm
8.240 kg
1300
10.000 mm
35.000 mm
11.000 mm
0.600 mm
0.058 kg
1300C3
10.000 mm
35.000 mm
11.000 mm
0.600 mm
1300K
10.000 mm
35.000 mm
11.000 mm
0.600 mm
1300KC3
10.000 mm
35.000 mm
11.000 mm
0.600 mm
1301
12.000 mm
37.000 mm
12.000 mm
1.000 mm
0.066 kg
1301C3
12.000 mm
37.000 mm
12.000 mm
1.000 mm
1301K
12.000 mm
37.000 mm
12.000 mm
1.000 mm
1301KC3
12.000 mm
37.000 mm
12.000 mm
1.000 mm