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
5314WSC3
70.000 mm
150.000 mm
63.500 mm
2.032 mm
W5205LLU
25.000 mm
52.000 mm
23.812 mm
1.000 mm
5314ZC3
70.000 mm
150.000 mm
63.500 mm
2.100 mm
4.458 kg
W5205SLLD
25.000 mm
52.000 mm
23.812 mm
1.000 mm
5315
75.000 mm
160.000 mm
68.300 mm
2.100 mm
5.561 kg
5315C3
75.000 mm
160.000 mm
68.300 mm
2.100 mm
5.561 kg
5312T2ZZNR
60.000 mm
130.000 mm
54.000 mm
2.100 mm
5312WLAB
60.000 mm
130.000 mm
53.975 mm
2.032 mm
5312WLC3
60.000 mm
130.000 mm
53.975 mm
2.032 mm
5313
65.000 mm
140.000 mm
58.700 mm
2.100 mm
5313C3
65.000 mm
140.000 mm
58.700 mm
2.100 mm
3.687 kg
5313NRC3
65.000 mm
140.000 mm
58.700 mm
2.100 mm
3.732 kg
5311C3
55.000 mm
120.000 mm
49.200 mm
2.000 mm
2.287 kg
5313T2ZZNR
65.000 mm
140.000 mm
58.700 mm
2.100 mm
5311NR
55.000 mm
120.000 mm
49.200 mm
2.000 mm
2.327 kg
5313WC3
65.000 mm
140.000 mm
58.737 mm
2.032 mm
5311NRC3
55.000 mm
120.000 mm
49.200 mm
2.000 mm
1.327 kg
5313ZZG15
65.000 mm
140.000 mm
58.700 mm
2.100 mm
5311T2ZZ
55.000 mm
120.000 mm
49.200 mm
2.000 mm
5314
70.000 mm
150.000 mm
63.500 mm
2.100 mm
4.575 kg