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Hängelager, die wichtige Anwendung von Lagern in Maschinen

Suspension bearings are critical support components in modern industrial equipment, especially in bulk material handling equipment such as screw conveyors, bucket elevators and grain handling systems. For industrial purchasing managers, an in-depth understanding of the structure of such bearings, material selection, installation and maintenance points, not only to reduce the failure rate of the equipment, but also significantly enhance the professionalism and efficiency of purchasing decisions. This article will be from a variety of perspectives, a comprehensive interpretation of the function of the suspension bearing, classification, application scenarios and selection guide.

The suspension bearing is a mechanical component used to support the rotating shaft in systems such as screw conveyors. It helps maintain shaft alignment, mitigate vibration, and ensure smooth rotation between conveyor sections. Depending on load, temperature, and wear, there are several types of suspension bearings, including those made of wood, bronze, and plastic, as well as split designs.

Next, we’ll analyze the key functions, types, materials, and industrial uses of suspension bearings, as well as tips for choosing the right suspension bearing for your system.

Suspension Bearing Construction

Suspension bearings are designed to ensure stable support of the shaft, as well as ease of rotation and maintenance. A typical suspension bearing consists of the following parts:

Housing: the housing for mounting and fixing, usually made of cast iron or steel.

Shingles: Replaceable parts that are in direct contact with the shaft and carry the load, commonly made of polymer, bronze alloy or cast iron.

Seals: prevent dust and contaminants from entering the inside of the bearing and protect the lubrication system.

Lubrication device: Equipped with grease nipples or oil holes to facilitate maintenance.

Mounting bracket: fixes the bearing on the conveyor or equipment frame to ensure stable operation.

This structural design allows the suspension bearing to withstand the load of the intermediate shaft while being easy to replace and maintain, making it ideal for heavy-duty application scenarios such as screw conveyors.

What is the purpose of an overhung bearing?

Suspension Lager are mainly used to support long screw conveyors or intermediate shaft segments in screw conveyor systems and play an important structural support role in industrial material handling. When the shaft of a conveyor is long, a lack of effective support in the middle can lead to sagging or eccentric movement, which can reduce equipment efficiency and can also lead to premature wear or even serious equipment damage.

Their main functions include:

Preventing shaft sagging or poor alignment to stabilize the structure.

Reducing shaft oscillation and vibration to improve smooth operation.

Extend system life and reduce maintenance frequency.

Ensure safe operation under heavy loads and prevent failure in the middle of the system.

They are widely used in the following industries:

Bulk material handling systems (e.g. belt conveyors or screw conveyors).

Mining and quarrying (for high wear environments).

Agriculture and grain elevators (e.g. screw hoisting systems in silos).

Cement and concrete mixing equipment (heavy duty, dusty environments).

Food processing industry (requires FDA compliant stainless steel for hygiene).

It is critical to select and install suspension bearings based on shaft diameter, load, operating temperature and ambient conditions. If improperly sized or installed, conveyor shafts may deflect, seize or even break under heavy loads, resulting in system failure.

What are suspension bearings in a screw conveyor?

In a screw conveyor, the suspension bearing is a key component mounted in the center suspension position to support the longer intermediate shaft and ensure its stable rotation.

When conveyor lengths exceed 3 to 4 meters, multiple suspension bearings are often installed to spread the load and keep the equipment running smoothly. These bearings are mounted in a “hanging” configuration that is compact and easy to install and maintain.

The main functions of suspension bearings in screw conveyors include:

Supports the mid-section of the shaft, preventing bending and wobbling.

Reduce friction and improve conveying efficiency.

Extend equipment life and reduce failure rates.

Ensure proper centering and smooth rotation of the screw blades.

Since they often operate in dusty, high-temperature or corrosive environments, suspension bearings are usually equipped with replaceable wear-resistant shims and lubrication systems to ensure stable performance under harsh conditions.

How to choose suspension bearings?

Selecting the right suspension bearing is critical to the stability and longevity of your conveyor. Here are some key recommendations:

Shaft Diameter: It is important to match the inside diameter of the suspension bearing to the size of the intermediate shaft of the conveyor, taking into account the load requirements. The longer the shaft and the heavier the load, the stronger the support structure required.

Material compatibility: The working environment varies from industry to industry, so bearing materials must be selected according to specific conditions. For high temperature, humid, corrosive or dusty environments, corrosion-resistant materials (e.g., stainless steel or plastic shaft tiles) and sealing structures are recommended. For food grade applications, bronze or UHMW plastic materials are recommended.

Lubrication: Choose suspension bearings with grease nipples or oil cups for easy maintenance. For hard-to-reach areas, self-lubricating materials or sealed construction may be a better choice.

Wear resistance: The wear resistance of suspension bearings is mainly determined by the material of the axle shaft. For example, bronze alloys offer better wear resistance for high temperatures and heavy loads. Other options include high-performance plastics (such as ultra-high molecular weight polyethylene) and cast iron shingles.