The heat dissipation design of the auxiliary axle box cover: The significance of preventing overheating
In the operation scenarios of crushers, overheating of the auxiliary shaft box cover is a common and frequent problem – it can lead to accelerated aging of components and reduced operational efficiency at the lightest level, and cause bearing burnout and gear jamming at the heaviest level, directly resulting in downtime losses. According to industry research, nearly 30% of crusher failures are related to poor heat dissipation of the auxiliary shaft box cover. Many cross-border purchasers, due to ignoring the heat dissipation design, have purchased incompatible parts and in addition, bear high maintenance costs. This article will dissect the core logic of the heat dissipation design of the auxiliary shaft box cover, teach you the key methods to prevent overheating, and avoid purchasing and usage misunderstandings. Below, from the dimensions of overheating hazards, design key points, etc., combined with practical cases, it will be elaborated in detail.
The hazards of overheating of the auxiliary axle box cover: Why the heat dissipation design cannot be ignored?
The auxiliary axle box is the core component for power transmission in the crusher. The main function of the protective cover is not only to provide protection, but also to ensure smooth heat dissipation. Excessive heat will directly damage the lubrication environment inside the auxiliary axle box, causing the viscosity of the lubricating oil to decrease and the lubrication to fail.
This further leads to bearing wear and abnormal gear engagement. The subsequent maintenance costs are usually 5 to 8 times higher than normal maintenance. What’s more serious is that overheating may cause the guard to deform and rub against the internal rotating components, resulting in equipment shutdown or even safety accidents.
Here is a real case: In 2024, a certain African mine purchased a batch of axle box guards without optimized heat dissipation design. In the high-temperature working environment, they overheated and stopped running 3 times within just 2 months. Each shutdown caused a production line disruption of 8 to 12 hours, resulting in direct economic losses of over 100,000 yuan. After replacing with guards with scientific heat dissipation design, there were no more overheating problems within half a year, and the overall operational efficiency of the equipment increased by 15%.
Many purchasing agents will ask: “Can the guard cover of the auxiliary axle box be simplified in terms of heat dissipation design in a normal temperature operating environment?” The answer is no. Even in a normal temperature environment, when the crusher operates continuously, the internal temperature of the auxiliary axle box will continue to rise. Simplifying the heat dissipation design will lead to heat accumulation, and long-term use will still accelerate the aging of components and shorten their service life. It is recommended that regardless of the working conditions, the heat dissipation design must meet the standards.
The core points of the heat dissipation design for the auxiliary axle box cover: Which parameters are crucial?
The scientific heat dissipation design should be based on three core parameters: heat dissipation area, ventilation efficiency, and material thermal conductivity. The heat dissipation area directly determines the efficiency of heat dissipation. During the design process, it is necessary to reasonably increase the surface area of the protective cover, such as using a corrugated structure. Under the same volume, it can increase the heat dissipation area by more than 30%.
In terms of ventilation efficiency, ventilation openings should be set at appropriate positions on the protective cover, and dust-proof nets should also be equipped to prevent dust from entering and affecting the internal components. The size and number of the ventilation openings need to be calculated based on the power of the crusher. Generally, for every 100kW increase in power, the total area of the ventilation openings needs to increase by 0.02 square meters.
In terms of material selection, we prefer to use materials with good thermal conductivity such as aluminum alloy and cast steel. Among them, the thermal conductivity of aluminum alloy is 2.5 times that of ordinary steel, which can quickly transfer the internal heat to the surface. Data shows that with the use of a protective cover with optimized heat dissipation parameters, the internal temperature can be reduced by 40% to 60%, and the lifespan of the accessories can be extended by 2 to 3 times.
Common Questions: “Will increasing the heat dissipation area affect the protective strength of the shield?” As long as the design is reasonable, it is possible to achieve a balance between both. For example, by using a combination of “wavy structure + reinforcing ribs”, not only is the heat dissipation area increased, but the reinforcing ribs also enhance the shield’s resistance to pressure and impact, meeting the protection requirements for harsh working environments such as mines and construction sites.
Thermal design solutions under different operating conditions: How to achieve precise adaptation?
The heat dissipation requirements for the auxiliary axle box guard vary significantly depending on different operating conditions. Therefore, a targeted design solution is necessary. In high-temperature conditions (such as in tropical mining areas or metallurgical crushing scenarios), a combined solution of “increased ventilation openings + heat-conducting coating” should be adopted.
The thermal insulation coating can enhance the surface heat dissipation efficiency. At the same time, an insulating layer is added inside the protective cover to prevent the external high temperature from penetrating in. In dusty conditions (such as coal and cement crushing), a “closed cooling + built-in cooling fan” solution is required. The built-in fan is used to accelerate the internal air circulation, while preventing dust from entering the protective cover.
Case reference: For a cement plant in Southeast Asia, the original auxiliary axle box cover of the crusher frequently overheated due to the blockage of the heat dissipation ports in a dusty environment. We customized a sealed heat dissipation cover for it, equipped with an automatic dust removal filter and an internal cooling fan. After its use, the occurrence rate of overheating faults decreased from 4 times per month to 0 times, and the continuous operation time of the equipment increased to twice the original level.
User’s question: “When conducting cross-border procurement, how can we adjust the cooling design based on the operating conditions of the target market?” First, it is necessary to clearly define the mainstream operation scenarios of the target market. For example, the European market has a temperate environment, mainly featuring normal temperature and low to medium dust conditions, and can adopt the basic cooling solution; the African and Southeast Asian markets have high-temperature and high-dust conditions, and require upgraded cooling and dust-proof configurations. When communicating with suppliers, it is recommended to provide detailed operating condition parameters to facilitate the customization of an adapted solution.
Quality control of heat dissipation design: What key points should be considered during procurement?
When purchasing the auxiliary axle box guard for cross-border projects, it is necessary to control the quality of the heat dissipation design from three aspects. Firstly, check whether the heat dissipation parameters are compatible. The supplier is required to provide specific data such as the heat dissipation area, ventilation volume, and material thermal conductivity to ensure that it is suitable for the power and working conditions of the own crusher.
Secondly, review the process details, with a focus on checking whether the ventilation port design is reasonable, whether the reinforcing ribs are in place, and whether the surface coating is uniform. These details directly affect the heat dissipation effect and service life. Finally, it is required to provide a third-party test report to confirm the temperature test data of the protective cover under simulated conditions, to avoid purchasing inferior products.
The data shows that purchasers who strictly control the quality of cooling design can reduce equipment failure costs by more than 60%. A certain cross-border purchaser selected suppliers based on the above three dimensions, and the average service life of the accessory housing covers reached over 3 years, which is much higher than the industry average of 1.5 years.
Common Question: “When the budget is limited, how can we ensure the cooling effect while controlling costs?” We can prioritize optimizing the core cooling parameters, such as choosing cost-effective aluminum materials, designing the size of the ventilation ports reasonably, and temporarily not considering unnecessary additional functions (such as automatic cleaning of the dust filter). These measures will be implemented when there is more funding available or when the working conditions require upgrades.
FAQ: Frequent Questions on the Heat Dissipation Design of the Auxiliary Axle Box Guard
Q1: The side cover of the auxiliary gearbox of the existing crusher does not have a cooling design. Can it be upgraded?
A1: Yes, it can be upgraded. First, calculate the required cooling parameters based on the equipment power and operating conditions. Then, upgrade it by adding ventilation outlets, replacing the heat-conductive material of the cover shell, and installing cooling fans. It is recommended to have a professional technician conduct an on-site inspection and formulate a renovation plan to avoid damaging the equipment during the renovation process.
Q2: Does the heat dissipation design of the auxiliary axle box cover require regular maintenance? What are the key points of maintenance?
A2: Regular maintenance is required. The recommended maintenance frequency is once a month. The key points of maintenance include: cleaning the dust on the ventilation port filter, checking the operating condition of the heat dissipation fan, inspecting whether the surface coating of the cover has fallen off, confirming whether the reinforcing ribs have deformed, and promptly addressing any abnormalities to ensure stable heat dissipation effect.
Q3: When purchasing cross-border axle housing covers, how can one determine if the supplier’s heat dissipation design is professional?
A3: It can be judged from three aspects: First, require the supplier to provide targeted working condition adaptation plans and calculation basis for heat dissipation parameters; second, review their past cooperation cases and customer feedback under similar working conditions; third, require them to provide samples for simulation working condition tests to verify if the heat dissipation effect meets the standards.
The heat dissipation design of the auxiliary axle box cover directly affects the operational stability of the crusher and the lifespan of the accessories. It is a crucial aspect that cannot be ignored in cross-border procurement and equipment operation. To effectively prevent overheating and reduce operating costs, it is necessary to master the core heat dissipation parameters, design solutions suitable for different working conditions, and strictly control the quality of procurement. The importance of the heat dissipation design of the auxiliary axle box cover in preventing overheating is precisely the core point that every professional in the crushing machine industry and the purchasers need to deeply understand.
Meta Description
This article is written by a veteran professional in the field of crusher accessories, focusing on the heat dissipation design of the auxiliary gearbox cover: the importance of preventing overheating. It dissects the core points of the heat dissipation design, the applicable solutions for different working conditions, integrates real industry cases and answers to procurement questions, teaching cross-border purchasers and B-end customers to precisely control the quality of procurement, avoid overheating faults, and enhance the stability of equipment operation. Read it now to master practical methods and optimize procurement and operation strategies!
Core Keywords
Subframe housing guard cooling design, crusher accessory cooling solution, cross-border procurement of subframe housing guards, overheating solution for subframe housing guards, crusher guard design for high-temperature working conditions
Post time: Dec-29-2025