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
5309NRZZG15
45.000 mm
100.000 mm
39.700 mm
1.500 mm
1.340 kg
5309T2ZZ
45.000 mm
100.000 mm
39.700 mm
1.500 mm
5309WC3
45.000 mm
100.000 mm
39.687 mm
1.524 mm
5309WSC3
45.000 mm
100.000 mm
39.688 mm
1.524 mm
5309WSSC3
45.000 mm
100.000 mm
39.687 mm
1.524 mm
5310
50.000 mm
110.000 mm
44.400 mm
2.000 mm
1.782 kg
5310C3
50.000 mm
110.000 mm
44.400 mm
2.000 mm
1.782 kg
5310CZZC3
50.000 mm
110.000 mm
44.400 mm
2.000 mm
1.950 kg
5310EEG15
50.000 mm
110.000 mm
44.400 mm
2.000 mm
5310KZZEC3
50.000 mm
110.000 mm
44.400 mm
2.000 mm
5310NR
50.000 mm
110.000 mm
44.400 mm
2.000 mm
1.808 kg
5310NRC3
50.000 mm
110.000 mm
44.400 mm
2.000 mm
1.808 kg
5310T2ZZ
50.000 mm
110.000 mm
44.400 mm
2.000 mm
5310T2ZZNR
50.000 mm
110.000 mm
44.400 mm
2.000 mm
5310WA
50.000 mm
110.000 mm
44.450 mm
2.032 mm
5310WLC3
50.000 mm
110.000 mm
44.450 mm
2.032 mm
5310WSSC3
50.000 mm
110.000 mm
44.450 mm
2.032 mm
5311
55.000 mm
120.000 mm
49.200 mm
2.000 mm
2.287 kg
5307NR
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.771 kg
5307NRC3
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.771 kg
5307NRZZG15
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.820 kg
5307WC3
35.000 mm
80.000 mm
34.900 mm
1.500 mm
0.790 kg
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