doosan swing bearing

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

The Doosan swing bearing is a critical component in Doosan construction machinery, particularly in crawler excavators, known for its durability and performance under heavy loads. Here's a detailed introduction to the Doosan swing bearing:

1. Functionality:

• The swing bearing in Doosan excavators is designed to support the rotation of the upper structure relative to the undercarriage, allowing for a wide range of motion during operations. It plays a vital role in the machine's ability to pivot and change direction.

2. Design and Construction:

• The swing bearing used in Doosan excavators is a single-row, shear type ball bearing with an induction-hardened internal gear. This design ensures high load capacity and resistance to wear.

• The internal gear and pinion of the swing mechanism are immersed in lubricant, which helps in reducing friction and maintaining the longevity of the bearing.

3. Performance Specifications:

• Maximum swing speed of the Doosan excavator equipped with the swing bearing is 11.5 rpm, indicating its capability to provide swift and agile movement.

• The maximum swing torque that the bearing can handle is 9626 kgf·m, demonstrating its strength under heavy operational demands.

4. Integration with Swing Mechanism:

• The swing mechanism uses an axial piston motor, driving a 2-stage planetary reduction gear bathed in oil for maximum torque transfer.

• This setup ensures efficient power delivery and smooth operation of the swing bearing, even under the most demanding conditions.

5. Maintenance and Durability:

• The swing bearing is designed to withstand the rigors of construction work, with a focus on minimizing maintenance requirements while ensuring long-term reliability.

• Regular inspection and lubrication are essential to maintain the performance and extend the service life of the swing bearing.

6. Application in Doosan Models:

• The swing bearing is a standard component in various models of Doosan excavators, including the DX235LCR-7 model, which is known for its robust construction and high-performance capabilities.

7. Quality Assurance:

• Doosan places a high emphasis on quality, and their swing bearings are manufactured to meet strict quality standards to ensure reliability and performance in the toughest conditions.

The Doosan swing bearing is engineered to provide superior performance and reliability, making it a trusted choice for construction professionals who demand the highest standards of efficiency and durability in their equipment.

For further details on this product please directly contact our sales department under shh@dmsw.com 

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