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
2301C3
12.000 mm
37.000 mm
17.000 mm
1.000 mm
2301K
12.000 mm
37.000 mm
17.000 mm
1.000 mm
2301KC3
12.000 mm
37.000 mm
17.000 mm
1.000 mm
2215
75.000 mm
130.000 mm
31.000 mm
1.500 mm
1.584 kg
2215C3
75.000 mm
130.000 mm
31.000 mm
1.500 mm
2215K
75.000 mm
130.000 mm
31.000 mm
1.500 mm
1.556 kg
2215KC3
75.000 mm
130.000 mm
31.000 mm
1.500 mm
1.556 kg
2216
80.000 mm
140.000 mm
33.000 mm
2.000 mm
1.993 kg
2216C3
80.000 mm
140.000 mm
33.000 mm
2.000 mm
1.993 kg
2216K
80.000 mm
140.000 mm
33.000 mm
2.000 mm
1.950 kg
2216KC3
80.000 mm
140.000 mm
33.000 mm
2.000 mm
1.950 kg
2217
85.000 mm
150.000 mm
36.000 mm
2.000 mm
2.519 kg
2217C3
85.000 mm
150.000 mm
36.000 mm
2.000 mm
2.519 kg
2217K
85.000 mm
150.000 mm
36.000 mm
2.000 mm
2.474 kg
2217KC3
85.000 mm
150.000 mm
36.000 mm
2.000 mm
2.474 kg
2218
90.000 mm
160.000 mm
40.000 mm
2.000 mm
3.170 kg
2218C3
90.000 mm
160.000 mm
40.000 mm
2.000 mm
3.170 kg
2218K
90.000 mm
160.000 mm
40.000 mm
2.000 mm
3.098 kg
2218KC3
90.000 mm
160.000 mm
40.000 mm
2.000 mm
2219
95.000 mm
170.000 mm
43.000 mm
2.100 mm
3.896 kg
2219C3
95.000 mm
170.000 mm
43.000 mm
2.100 mm
2219K
95.000 mm
170.000 mm
43.000 mm
2.100 mm
3.821 kg
2219KC3
95.000 mm
170.000 mm
43.000 mm
2.100 mm
2210KEEG15
50.000 mm
90.000 mm
23.000 mm
1.100 mm
0.593 kg