Excellent self-lubrication: Graphite forms a solid lubricating film during operation, reducing friction and wear.

✅ High load-bearing and impact resistance: The steel shell provides support strength, while the cast bronze lining resists wear and withstands pressure.

✅ High-temperature resistance and long life: The solid lubrication properties ensure reliable performance in high-temperature and maintenance-intensive environments.

✅ Strong environmental adaptability: Suitable for harsh environments such as dust and moisture, with zero or minimal maintenance requirements.

Overview of Core Applications

MG-6&5 SL bearings are widely used in the following heavy-duty industrial sectors. These sectors share a common characteristic: high equipment value, high downtime costs, and extremely stringent reliability requirements for key components.

Specific Application Scenario Analysis

1. Construction Machinery and Heavy-Duty Vehicles - Core Applications

This is the most classic application for these bearings, as the equipment is constantly exposed to mud, dust, and impact loads.

Excavators:

Applications: Bucket linkage pins, boom-arm connecting pins, and slewing ring gear supports.

Value: They provide continuous lubrication, ignoring mud and water intrusion, reducing the frequency of daily lubrication maintenance, and withstand the intense impact of excavation.

Loaders:

Applications: Front and rear frame hinge pins (center hinge), and connecting pins for various working devices.

Value: They can withstand torsional loads and frequent swing loads, while the high strength provided by the steel back prevents bearing deformation.

Bulldozers/Crawler Cranes:

Applications: Track rollers, idlers, sprockets, and track pin bushings.

Value: Excellent wear and impact resistance, suitable for the harsh operating conditions of crawler equipment.

2. Metallurgy and Continuous Casting Equipment

This field is characterized by high temperatures, heavy loads, and the presence of water vapor and scale contamination.

Continuous Casting Machines:

Applications: Segment roller bearings.

Value: In environments subject to spray cooling and high-temperature radiation, graphite lubrication prevents erosion or carbonization, unlike grease, which can lead to failure, ensuring continuous production.

Rolling Equipment:

Applications: Balancing devices for rolling mill drums and straightening roller bearings for straightening mills.

Value: High load capacity meets rolling force requirements, and self-lubricating properties reduce maintenance.

3. Mining and Crushing Equipment:

The environment is characterized by high-hardness mineral dust and extreme shock loads.

Jaw crusher: The movable jaw bearing withstands large, cyclical impact loads.

Cone crusher: The eccentric sleeve bearing.

Vibrating screen: The vibrator bearing withstands high-frequency vibration and certain loads.

Value: Extremely high impact and wear resistance. The solid lubricant is not contaminated or washed away by mining dust, resulting in a lifespan far exceeding that of conventional bearings.

4. Water conservancy projects and gate opening and closing equipment

The operating conditions are characterized by long-term static loads, intermittent movement, complete water immersion, and difficult maintenance.

Large sluices/ship locks:

Applications: Hinge bearings for miter gates and slab gates.

Value: Excellent corrosion resistance and self-lubricating properties ensure no adhesive wear ("seizure") when starting after long periods of static operation, truly achieving "lifetime maintenance-free."

5. Agricultural machinery

The operating environment is dusty and humid, and equipment lubrication and maintenance are often neglected.

Combine harvesters: The header lifting linkage and the roller drive mechanism. Large tractors: Suspension tie rod bushings.

Value: Adapts to the extensive use of agricultural machinery and reduces downtime caused by poor lubrication.