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
1221C3
105.000 mm
190.000 mm
36.000 mm
2.100 mm
1221K
105.000 mm
190.000 mm
36.000 mm
2.100 mm
1221KC3
105.000 mm
190.000 mm
36.000 mm
2.100 mm
1222
110.000 mm
200.000 mm
38.000 mm
2.100 mm
5.133 kg
1222C3
110.000 mm
200.000 mm
38.000 mm
2.100 mm
1222K
110.000 mm
200.000 mm
38.000 mm
2.100 mm
5.072 kg
1222KC3
110.000 mm
200.000 mm
38.000 mm
2.100 mm
5.072 kg
1213C3
65.000 mm
120.000 mm
23.000 mm
1.500 mm
1213K
65.000 mm
120.000 mm
23.000 mm
1.500 mm
1.114 kg
1213KC3
65.000 mm
120.000 mm
23.000 mm
1.500 mm
1.114 kg
1213KC4
65.000 mm
120.000 mm
23.000 mm
1.500 mm
1.114 kg
1214
70.000 mm
125.000 mm
24.000 mm
1.500 mm
1.239 kg
1214C3
70.000 mm
125.000 mm
24.000 mm
1.500 mm
1.239 kg
1214K
70.000 mm
125.000 mm
24.000 mm
1.500 mm
1.232 kg
1214KC3
70.000 mm
125.000 mm
24.000 mm
1.500 mm
1215
75.000 mm
130.000 mm
25.000 mm
1.500 mm
1.326 kg
1215C3
75.000 mm
130.000 mm
25.000 mm
1.500 mm
1.326 kg
1215K
75.000 mm
130.000 mm
25.000 mm
1.500 mm
1.317 kg
1215KC3
75.000 mm
130.000 mm
25.000 mm
1.500 mm
1.317 kg
1216
80.000 mm
140.000 mm
26.000 mm
2.000 mm
1.646 kg
1216C3
80.000 mm
140.000 mm
26.000 mm
2.000 mm
1.646 kg
1216K
80.000 mm
140.000 mm
26.000 mm
2.000 mm
1.626 kg
1216KC3
80.000 mm
140.000 mm
26.000 mm
2.000 mm
1217
85.000 mm
150.000 mm
28.000 mm
2.032 mm