‌FAG Angular Contact Ball Bearings (FAG angular contact ball bearings) are a type of bearing that can bear both radial and axial loads, and are particularly suitable for high speeds and combined loads.

FAG angular contact ball bearings are designed so that both the inner and outer rings have raceways, and the inner and outer rings can move relative to each other along the bearing axis. This design is particularly suitable for bearing combined loads, that is, loads acting radially and axially at the same time. The larger the contact angle, the higher the axial load capacity. Common contact angles are 15°, 25° and 40°, corresponding to different models, such as 70000C (α=15°), 70000AC (α=25°) and 70000B (α=40°) ‌ FAG angular contact ball bearings are widely used in high-frequency motors, centrifugal separators and other equipment. They can work stably at high speeds, have low friction, and are suitable for occasions that need to bear radial and axial loads at the same time. ‌ FAG angular contact ball bearings can be installed in a variety of ways, including back-to-back, face-to-face and tandem arrangements. Back-to-back installation can increase radial and axial support angle rigidity, while face-to-face installation can increase preload. Proper installation and maintenance can ensure long life and efficient operation of the bearing.

As a pivotal innovation within the Schaeffler Group’s portfolio, FAG Angular Contact Ball Bearings are engineered to deliver exceptional performance in applications demanding high-speed operation, bidirectional load handling, and micron-level precision. Renowned for their versatility and durability, these bearings are integral to industries ranging from aerospace and robotics to machine tools and electric vehicles. This comprehensive guide explores FAG’s angular contact ball bearing range, emphasizing technical specifications, advanced engineering, and industry-tailored solutions to maximize operational efficiency and equipment longevity.

Product Series & Technical Specifications

1. Single-Row Angular Contact Ball Bearings

Designed for high-speed applications with combined radial and axial loads.

FAG 72/73 Series (Standard)

Contact Angles: 15° (C), 25° (D), 40° (E) configurations for varying load ratios.

Precision Class: ABEC 5/7 (ISO P5/P4) with radial runout ≤3 μm.

Dynamic Load Capacity: Up to 120 kN; static load 65 kN (e.g., FAG 7312-B-TVP).

Speed Limit: 18,000 RPM with oil lubrication, 12,000 RPM with grease.

FAG HCS Series (Hybrid Ceramic)

Material: Silicon nitride balls paired with steel races for 40% lower friction and thermal stability.

Applications: High-frequency spindles in CNC machining centers.

2. Double-Row Angular Contact Ball Bearings

Optimized for higher radial stiffness and axial load capacity in compact designs.

FAG 32/33 Series

Load Distribution: Symmetrical raceways handle bidirectional axial loads.

Preload: Factory-set preload options (Light, Medium, Heavy) for vibration reduction.

Example: FAG 3206-X-XL supports axial loads up to 50 kN in pump systems.

FAG X-Life Series

Innovation: Enhanced raceway geometry extends fatigue life by 35% versus standard designs.

Surface Finish: Ra ≤0.1 μm polishing minimizes heat generation at high RPM.

3. Four-Point Contact Ball Bearings

Single-row designs capable of handling axial loads in both directions.

FAG QJ2 Series

Axial Load Capacity: 85% of radial load rating (e.g., FAG QJ212-N2-MPA).

Applications: Robotic joints, turntables, and slewing rings.

4. Specialty Bearings

High-Temperature Variants (HT Series): Operate at -60°C to +250°C with stabilized cages.

Corrosion-Resistant (W Series): AISI 440C stainless steel for marine and chemical processing.

Vacuum-Ready Bearings: Cleanroom-assembled with perfluorinated lubricants (ISO Class 3).

FAG Angular Contact Ball Bearings exemplify the fusion of precision engineering and industrial innovation. Whether enabling submicron accuracy in aerospace components, extending the lifespan of EV drivetrains, or ensuring reliability in offshore wind turbines, these bearings deliver measurable performance gains. Backed by Schaeffler’s global technical network and cutting-edge digital tools, FAG empowers industries to achieve higher productivity, lower energy costs, and sustainable operations.