Double Row Angular Contact Ball Bearings

**NTN Angular Contact Ball Bearings: Precision Performance for Demanding Applications**

NTN is a globally recognized leader in bearing technology, delivering high-performance solutions for industrial machinery, automotive systems, and precision equipment. Among its extensive product range, NTN’s **Angular Contact Ball Bearings** and **Double Row Angular Contact Ball Bearings** stand out for their ability to handle combined radial and axial loads with exceptional accuracy, durability, and efficiency. These bearings are engineered to meet the rigorous demands of high-speed operations, heavy-load conditions, and applications requiring precise rotational control.

### **Technical Features & Design Advantages**
NTN’s **Single Row Angular Contact Ball Bearings** are designed with a contact angle (typically 15°, 25°, 30°, or 40°) that enables them to support significant axial loads in one direction while accommodating moderate radial loads. The optimized raceway geometry and high-quality steel construction minimize friction, reduce heat generation, and extend service life. These bearings are available in various configurations, including:
– **Standard (non-separable) designs** for general applications
– **Split inner ring designs** for easier assembly in complex machinery
– **High-speed variants** with ceramic hybrid options for reduced centrifugal forces

For applications requiring higher load capacity and rigidity, NTN’s **Double Row Angular Contact Ball Bearings** provide a compact solution. They combine two single-row bearings into a single unit, offering enhanced axial and radial load support in both directions. Their stiffened internal structure ensures stability in precision machinery, while advanced sealing options improve contamination resistance.

### **Performance Benefits**
– **Superior Load Handling:** The angular contact design efficiently manages combined loads, making these bearings ideal for applications with significant thrust forces.
– **High-Speed Capability:** Precision-ground raceways and advanced cage designs (e.g., pressed steel or polyamide) ensure smooth operation at elevated speeds.
– **Enhanced Rigidity & Accuracy:** Double-row variants reduce deflection under heavy loads, critical for machine tools and robotics.
– **Extended Service Life:** NTN’s proprietary heat treatment and surface finishing technologies minimize wear and fatigue.

### **Typical Applications**
NTN’s angular contact ball bearings are widely used in:
– **Industrial Machinery:** CNC spindles, pumps, compressors, and gearboxes
– **Automotive Systems:** Wheel hubs, transmissions, and electric vehicle motors
– **Precision Equipment:** Robotics, medical devices, and aerospace actuators

By combining advanced engineering with rigorous quality control, NTN ensures that its angular contact ball bearings deliver unmatched reliability, even in the most demanding environments. Whether optimizing industrial productivity or enhancing automotive performance, NTN’s solutions provide the precision and durability needed for superior operational efficiency.

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Part Number d D B r Mass
3218
90.000 mm
160.000 mm
52.400 mm
2.000 mm
3211C3
55.000 mm
100.000 mm
33.300 mm
1.500 mm
1.011 kg
3219C3
95.000 mm
170.000 mm
55.600 mm
2.100 mm
3211EC3
55.000 mm
100.000 mm
33.300 mm
1.500 mm
3212
60.000 mm
110.000 mm
36.500 mm
0.500 mm
3212C3
60.000 mm
110.000 mm
36.500 mm
1.500 mm
1.366 kg
3206
30.000 mm
62.000 mm
23.800 mm
1.000 mm
0.309 kg
3206B
30.000 mm
62.000 mm
23.800 mm
1.000 mm
0.310 kg
3207
35.000 mm
72.000 mm
27.000 mm
1.100 mm
0.473 kg
3207B
35.000 mm
72.000 mm
27.000 mm
1.000 mm
0.480 kg
3207C3
35.000 mm
72.000 mm
27.000 mm
1.100 mm
0.473 kg
3200A
10.000 mm
30.000 mm
14.000 mm
0.600 mm
0.043 kg
3208C3
40.000 mm
80.000 mm
30.200 mm
1.100 mm
0.646 kg
3201
12.000 mm
32.000 mm
15.900 mm
0.600 mm
3209
45.000 mm
85.000 mm
30.200 mm
1.100 mm
0.684 kg
3202
15.000 mm
35.000 mm
15.900 mm
0.600 mm
0.068 kg
3209C3
45.000 mm
85.000 mm
30.200 mm
1.100 mm
0.684 kg
3202C3
15.000 mm
35.000 mm
15.900 mm
0.600 mm
0.068 kg
3210
50.000 mm
90.000 mm
30.200 mm
1.100 mm
3203
17.000 mm
40.000 mm
17.500 mm
0.600 mm