The Role of Bearings in Construction and Engineering Machinery

In the field of construction machinery, the application of bearings is extremely critical. They provide support, rotation, shock absorption and friction reduction functions for various types of construction equipment. Construction machinery usually requires bearings with high load capacity, durability, stability and adaptability to complex working environments. The following are the main application scenarios of bearings in construction machinery:

Crane (tower crane, crawler crane, etc.)

Crane is an indispensable large-scale equipment on construction sites, and bearings play an important role in its key components. The working environment of the crane is complex and needs to withstand huge loads, repeated movements and high impact forces. Therefore, the quality of the bearing directly affects the working efficiency and safety of the equipment.

• Rotation system: The rotating parts of tower cranes and crawler cranes usually use slewing bearings or large roller bearings to withstand axial, radial and tilting forces to ensure that the equipment can smoothly complete 360-degree rotation.
• Boom and winch: The boom and winch system of the crane rely on precision bearing support to ensure the smooth completion of the lifting task under various working conditions.

Concrete mixer

Concrete mixer is a common equipment on construction sites, and bearings play a key role in the mixer. The motor and rotating parts of the mixer need bearing support to ensure smooth operation and withstand high loads and vibration.

• Mixing drum rotation: The mixing drum usually uses rolling bearings or sliding bearings to maintain uniform mixing.
• Drive system: The bearings in the motor and drive device need to have high load capacity to ensure efficient power transmission.

Excavator

Excavators are important equipment on construction sites, and bearings are widely used in their tracks, buckets and rotating parts.

• Rotation and slewing system: The rotating platform of the excavator relies on slewing bearings to withstand huge axial and radial loads to ensure smooth operation of the equipment under high-intensity conditions.
• Track and walking system: The bearings in the track system need to have high strength, wear resistance and vibration resistance to ensure stable movement of the equipment on rough ground.

Bulldozer

Bulldozers are used for land leveling and bulldozing operations. Bearings play an important role in their drive system, track system and bucket parts.

• Track drive system: The bearings in the track system need to have high durability to withstand high loads and impacts during walking.
• Bucket and bulldozer blade: The motion system of bucket and bulldozer blade relies on bearings to reduce friction and ensure smooth operation.

Concrete pump truck

Concrete pump truck is used for conveying and pouring concrete, and bearings are crucial in its pumping system.

• Pumping system drive bearings: The bearings in the motor need to have high load capacity and wear resistance to cope with the high pressure and high vibration during concrete pumping.
• Rotary support system: Bearings in pump pipes and conveying systems ensure that the equipment works smoothly in different positions.

Slipform machine

Slipform machine is used to form concrete walls or columns, and bearings play an important role in its sliding and support system.

• Sliding support system: Bearings are used in slide rails and slipform components to reduce friction and maintain smooth movement.
• Mechanical drive system: Bearings in drive motors and transmission systems ensure efficient power transmission.

Vibratory roller

Vibratory roller is used for road construction, and bearings are crucial in its vibration system.

• Vibration system bearings: Vibration bearings need to withstand frequent high loads and impact loads while maintaining low friction and high durability.

Rebar bending machine

Rebar bending machine is used for rebar processing. Bearings support working rollers and transmission devices to ensure processing accuracy and efficiency.

Tower crane slewing system

The slewing system of the tower crane relies on bearing support and rotation to ensure that the equipment can smoothly complete 360-degree rotation operation.

Summary

Bearings are widely used in construction machinery, covering cranes, excavators, concrete mixers and other equipment. They play a key role in improving mechanical performance, extending service life and reducing maintenance costs. Due to the complex working environment of construction machinery, bearings need to have high load capacity, wear resistance, vibration resistance and corrosion resistance. With the advancement of construction technology, the design and materials of bearings are constantly innovating to meet increasingly stringent working requirements.