Application of FAG Bearings in Concrete Mixer Trucks

Writer: Eric Bearing Limited

Bearings are crucial components in concrete mixer trucks, ensuring smooth rotation, load support, and durability under harsh operating conditions. These trucks transport and mix concrete, subjecting bearings to heavy loads, vibrations, and abrasive environments. This article discusses the types of bearings used in mixer trucks, their functions, and key challenges.

Types of FAG Bearings in Concrete Mixer Trucks

1. Drum Support Bearings

Located at the front and rear of the mixing drum, these bearings support the drum’s weight and allow rotation.

Typically spherical roller bearings are used due to their ability to handle heavy radial and axial loads.

Must resist contamination from concrete slurry and dust.

2. Drive System Bearings

Found in the hydraulic or mechanical drive system that rotates the drum.

FAG Tapered roller bearings and ball bearings are common, providing high load capacity and smooth power transmission.
 

3. Chassis and Suspension Bearings

Support the truck’s axles, wheels, and suspension system.

Hub bearings and needle roller bearings are often used to endure road vibrations and shock loads.

 

4. Swivel Joint Bearings (for Hydraulic Systems)

Allow hydraulic lines to rotate with the drum without leakage.

FAG Angular contact bearings or slewing ring bearings ensure smooth movement under pressure.

Key Functions of Bearings in Mixer Trucks

Load Support: Bearings handle the weight of the drum (often several tons when full) and dynamic forces during mixing.

Friction Reduction: Minimize wear between moving parts, improving fuel efficiency and lifespan.

Shock & Vibration Absorption: Protect mechanical components from road and mixing impacts.

Sealing & Contamination Resistance: Special seals prevent concrete, water, and debris from entering bearings.

Abrasive Wear: Concrete particles can damage bearings; sealed or coated bearings are used to prevent ingress.

Heavy Loads: High-capacity bearings (e.g., spherical rollers) are selected to withstand stress.

Corrosion: Stainless steel or specially treated bearings resist water and chemical exposure.

Maintenance Issues: Automated lubrication systems help extend bearing life in hard-to-reach areas.

FAG Bearings in concrete mixer trucks are critical for reliable operation, ensuring smooth drum rotation, load handling, and longevity. Advances in sealing technology, materials, and lubrication systems continue to improve their performance in demanding environments. Proper maintenance and bearing selection are essential to minimize downtime and maximize efficiency.