A Corporate Battle Against "Heat"

With the rapid development of the mechanical and technological industries, the economic benefits brought by high machining precision are increasingly expanding. High and stable machining precision not only reduces the consumption of raw materials and supplies during production but also enhances product competitiveness. Additionally, improved precision optimizes the use of machine space, saving materials and increasing the flexibility of machine customization. Ultimately, these advantages contribute to environmental sustainability, aligning with the globally recognized ESG (Environmental, Social, Governance) issues and net-zero carbon goals.

However, as demands for precision and environmental awareness rise, how can CML Precision Machinery meet customer product requirements? "Sustainability and environmental protection" are no longer future goals but actions to be taken now. According to internal statistics, since 2022, the rising trend of ESG issues has made the industry supply chain increasingly emphasize sustainability concepts. Over 70% of new machines are configured with energy-saving as the main objective, and more costs are being invested in selecting related accessories during the R&D stage.

Upon carefully examining the root causes affecting environmental sustainability, it becomes clear that oil temperature control is closely related. Excessively high and unstable oil temperatures are among the urgent issues faced by the mechanical industry. To achieve environmental sustainability and maximize benefits while enhancing machining precision and saving machine space, companies must strengthen oil temperature control in their machines. The oil temperature condition of the hydraulic system not only affects the lifespan of hydraulic components but also leads to thermal deformation of materials and equipment, affecting the stability of machine operations and machining precision, thereby wasting processing materials. To solve the issue of machine oil temperature, the typical solution is to increase the oil tank's cooling surface area. However, it will enlarge the machine space, meaning more materials and hydraulic oil are required.

These issues caused by high oil temperatures, such as precision and space problems, hinder companies' execution of ESG initiatives and net-zero carbon goals. In recent years, the "active liquid cooling" technology has gained attention as a popular solution. It effectively lowers and stabilizes oil temperatures without increasing the oil tank size, providing a novel solution different from traditional methods.

Consequences of High Oil Temperature

The development of machine tools and certain specific equipment has driven the industry toward goals of higher speed and efficiency. Under these conditions, the equipment inevitably generates more heat during prolonged processing, leading to thermal errors on the processed products. Thermal errors account for 40% to 70% of the reasons for defective products. In the pursuit of maximum economic efficiency, high and stable precision at low costs are always the targets for companies. Therefore, how to cool or effectively control the temperature of the medium becomes a crucial matter.

VCM+CG Cooling Circulation Pump and

SPU Series Cooling Circulation Power Unit 

CML, Camel Precision has accumulated extensive domestic and international cooperation experience, assisting clients in creating customized hydraulic power units and systems. Over the years, market feedback has revealed an increasing demand for oil temperature control. To solve various issues caused by high oil temperatures, CML has conducted a series of tests and discussions, leading to the development of the patented 'VCM+CG Variable Vane Pump with Cooling Circulation Pump'. This innovative and reliable design enhances the oil temperature control function of system, alleviating the associated problems.

The SPU Series Cooling Circulation Power Unit is designed to systematically enhance the cooling effect of the VCM+CG Variable Vane Pump with Cooling Circulation Pump. We offer a comprehensive service from installation and testing to after-sales, ensuring that customers receive optimal support at every stage. Verified by numerous clients, CML's cooling systems can achieve an average temperature reduction of up to 20%. This effectively improves manufacturing precision, prevents subsequent processing requirements due to precision issues, enhances production efficiency, reduces material waste, saves production costs, and increases product competitiveness.

Active vs. Passive Liquid Cooling

Traditional hydraulic power units with standard vane pump typically use a passive liquid cooling method. During operation, the heat generated is dissipated through a small amount of internal leakage oil (approximately 600 to 1,000 c.c. per minute) that is directed to a cooling device before returning to the oil tank.

In contrast, the VCM+CG Variable Vane Pump with Cooling Circulation Pump employs an active liquid cooling method. Utilizing the continuous output characteristic of the circulation pump, the system actively directs a large volume of hot oil to the cooling system based on heat calculations. This approach matches the pump's displacement with the cooler's heat dissipation capability, ensuring stable temperature control.

 Compared to active liquid cooling, passive liquid cooling is less effective in solving thermal deformation caused by excessive oil temperature. In the VCM+CG system, the internal leakage and heat generated during machine operation channel into a designated hot oil zone in the oil tank. With a flow rate of 4 to 6 liters per minute, the circulation pump efficiently transfers this hot oil to the cooler for heat dissipation.

Unlike traditional oil tank designs, the new hydraulic power unit paired with the VCM+CG system doesn't rely on increasing the tank's surface area for passive heat dissipation. Instead, the tank's volume is reduced to just one times the pump's per-minute flow rate. This design innovation decreases the oil tank space to approximately 30% of the original size, significantly reducing the using amount of hydraulic oil and extending its service life, ultimately lowering costs.

Due to these advantages, active liquid cooling is widely used in high-precision, long-operating machines, such as CNC machine tools and shoe manufacturing machinery.

5 Key Features of SPU Series

1. High-Efficiency Cooling:

The SPU series offers cooling performance that exceeds traditional methods by over three times, thanks to the continuously outputting of circulation pump. This not only prevents overheating but also stabilizes oil temperatures, reducing the risk of damage to hydraulic components and extending their lifespan.

2. Optimized Space Utilization:

The SPU series from CML reduces the need for space dedicated to oil tank surface cooling. The oil tank volume can be decreased from 3.5 times to 1.5 times the pump's per-minute flow rate, saving valuable equipment space.

3. Cost Savings:

The reduction in oil tank volume and the stabilization of oil temperature result in lower material costs. This is achieved by reducing the raw materials needed for oil tank and machine production, as well as decreasing the using amount of hydraulic oil.

4. Extended Lifespan:

By lowering and stabilizing oil temperatures, the SPU series helps prolong the life of hydraulic components and extends the effective usage time of hydraulic oil, leading to reduced maintenance and replacement costs.

5. Temperature Control:

Improved Machining Precision: Through the CML team’s meticulous matching of pump displacement and cooler heat dissipation capacity, the SPU series achieves stable temperature control. This effectively manages oil temperatures, minimizing the impact of thermal deformation on equipment and materials, thus enhancing machining precision and stability.

The application of VCM+CG in hydraulic systems brings numerous advantages, including high-efficiency cooling, temperature stability, space savings, cost reduction, extended component life, and improved machining precision. As environmental consciousness grows, this provides companies with a superior solution.

High-Efficiency Oil Temperature Control Curve

Standard Variable Vane Pump (Passive Liquid Cooling) with Cooler

When using a standard variable vane pump with passive liquid cooling and a cooler, the oil temperature gradually increases due to the continuous operation of machine. Over time, this rise in temperature can cause the hydraulic oil to degrade and lead to thermal deformation of the equipment, ultimately reducing the machine's lifespan and economic efficiency.

Variable Vane Pump with Cooling Circulation Pump

 (Active Hydraulic Cooling) VCM+CG with Cooler

Under the conditions of a rotary hydraulic cylinder running at 5,000 rpm with the VCM+CG system, the oil temperature stabilizes within 40 minutes of the machine's startup and ceases to rise. Additionally, the spindle bearing temperature decreases by 3°C, resulting in minimal thermal displacement of the front and rear bearings, thereby ensuring consistent product machining precision.

From the comparison chart, it can be seen that the Variable Vane Pump with Cooling Circulation Pump (VCM+CG) stabilizes the oil temperature within just 2 hours of startup.

What are you waiting for?

In today's rapidly changing industrial landscape, companies are relentlessly pursuing more efficient and high-pressure equipment. These advancements inevitably generate more heat during the machining process, affecting the lifespan of hydraulic components, increasing oil temperature, and causing thermal deformation. This, in turn, compromises machining accuracy and significantly raises production costs. For companies striving for exceptional production efficiency, maintaining stable and high-precision machining is crucial. High-quality precision not only reduces the need for subsequent processing or corrections, enhancing overall production efficiency, but also boosts product competitiveness and reduces costs, ultimately bringing substantial returns to the business.

Many companies are pursuing the miniaturization of machinery due to the growing demand for small part processing and the high value placed on product customization. Effectively minimizing machines to improve factory space management and application efficiency, while increasing the flexibility of machine design, has become key to meeting diverse production demands.

At CML, we believe that advancements in oil temperature control, precision enhancement, and space utilization ultimately lead to dual benefits of environmental protection and cost savings. Achieving net-zero emissions has become a common goal across global industries. Developing low-energy-consumption machines and production lines is imperative now. Helping customers create low-carbon, green manufacturing equipment and production lines that reduce long-term energy consumption and carbon emissions in machinery is a crucial part of CML's future development plans.

We are committed to the principles of sustainable energy and environmental development, leveraging our extensive experience and resources through close collaboration with our clients. By deeply understanding their needs, we develop new products and systems that meet their customization requirements, thereby enhancing corporate social responsibility and market competitiveness. Moving forward together with our clients, CML will continue to lead the industry towards a more efficient and environmentally friendly manufacturing vision.

CML Camel Precision:

A Company Committed to Sustainable Energy for Humanity

CML Camel Precision has 43 years of experience in the production and sale of hydraulic products. As the first domestic company to enter the hydraulic manufacturing industry and produce internal gear pumps, we serve nearly 3,000 enterprises across 66 countries worldwide, working with over 180 suppliers. Our deep technical expertise and knowledge of the hydraulic industry, combined with rich experience in cross-border and cross-enterprise technical collaborations, position us as a leader in the field.

CML offers eight major categories with more than 500 types of pumps and valves, boasting 12 product patents. Our products undergo rigorous testing, including dedicated test benches, data analysis, durability tests, and noise tests. Systematic and digitalized quality control ensures the reliability of our products. Our services extend across various industries, including footwear manufacturing machinery, machine tools, plastic and rubber machinery, metal processing machinery, and mobile machinery. By deeply understanding our clients' industries and product needs, our professional team collaborates with customers to design and plan customized hydraulic power units, providing a complete process from installation and testing to after-sales service.

In terms of ESG (Environmental, Social, and Governance), CML Camel Precision is committed to being a company that helps humanity achieve sustainable energy. We develop high-efficiency green solutions to meet market demands and work with our customers to create a sustainable future. As a key driver of innovation, CML has developed patented products like the VCM+CG variable vane pump with cooling circulation and the SPU series cooling circulation hydraulic power units. These products can reduce temperatures by an average of 20%, effectively enhancing manufacturing precision and production efficiency, reducing material waste, saving production costs, and improving product competitiveness.

With exceptional product quality and professional service, CML has become a trusted partner for customers, providing stable and reliable power while leading them towards shared success.