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
5309EEG15
45.000 mm
100.000 mm
39.700 mm
1.500 mm
5307WC3
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.790 kg
5309KLEC3
45.000 mm
100.000 mm
39.688 mm
1.524 mm
5307WSC3
35.000 mm
80.000 mm
34.925 mm
1.524 mm
5307ZZG15
35.000 mm
80.000 mm
34.900 mm
1.500 mm
5308
40.000 mm
90.000 mm
36.500 mm
1.500 mm
0.992 kg
5306T2ZZNR
30.000 mm
72.000 mm
30.200 mm
1.100 mm
5306WSC3
30.000 mm
72.000 mm
30.162 mm
1.016 mm
5307
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.762 kg
5307AX3ZZ
35.000 mm
80.000 mm
34.900 mm
1.500 mm
5307C3
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.762 kg
5305NRZZG15
25.000 mm
62.000 mm
25.400 mm
1.000 mm
0.320 kg
5307CLLUC3
35.000 mm
80.000 mm
34.900 mm
1.500 mm
5305ZZG15
25.000 mm
62.000 mm
25.400 mm
1.000 mm
5307CZZC3
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.765 kg
5306
30.000 mm
72.000 mm
30.200 mm
1.100 mm
0.549 kg
5307CZZNR
35.000 mm
80.000 mm
34.900 mm
1.500 mm
5306C3
30.000 mm
72.000 mm
30.200 mm
1.100 mm
5307EEG15
35.000 mm
80.000 mm
34.900 mm
1.500 mm
5306CLLDAC3
30.000 mm
72.000 mm
30.200 mm
1.100 mm
0.570 kg