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A: Generally, it will take 40 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q3. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.

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caterpillar hydraulic filters,hydraulic filter for excavator

Common misunderstandings about the selection of hydraulic filter

In practical application, many users still have many misunderstandings about the selection of hydraulic filters in the hydraulic system. Today, I will introduce the following four common misunderstandings about the selection of hydraulic filters. Let's see how many you touch?

Myth 1: selecting a high-precision oil suction filter can not only effectively protect the hydraulic oil pump, but also ensure the cleanliness of the system.

Some users choose a high-precision oil suction filter, which can not only protect the hydraulic oil pump but also ensure the cleanliness of the system. However, the high-precision oil suction filter is easy to be blocked due to bearing too many pollutants, resulting in poor oil suction of the pump, resulting in empty suction, accelerating the wear of the pump, and seriously affecting the safety of the system.

Myth 2: the rated (nominal) flow of the filter is the actual flow of the system.

The rated flow of the filter is the flow that the oil passes through the clean filter element under the specified original resistance when the oil viscosity is 32 CST. However, in practical application, the viscosity of the oil will change at any time due to different media and system temperatures.

Myth 3: the higher the accuracy of filter selection, the better.

How to reasonably select the accuracy of the filter is mainly determined by the requirements of the components of the hydraulic system for the pollution of the oil. The higher the cleanliness of the components, the higher the accuracy of the filter selection.

Myth 4: (x μ m) The filter element with filtering accuracy can filter out all particles greater than its accuracy.

Because the hydraulic pollution control technology is still in the development stage in China, many users do not know much about the definition of filter element filtration accuracy and think that as long as the system is installed (x μ m) The precision filter element can ensure that there is no more than (x) in the system oil μ m) Particulate pollutants this is wrong. The national standard GB / t20079-2006 stipulates that the filtration ratio is used for the filtration capacity of the filter β X (c), which is defined as the ratio of the number of pollutant particles greater than a given size x (c) in the unit volume of oil upstream and downstream of the filter.

How to use a hydraulic filter correctly?

The hydraulic oil filter of the low-pressure series filter also has a bypass valve. When the filter element is not replaced in time, the bypass valve can be opened automatically to ensure the normal operation of the system. If the filter oil is not used for a long time, the impurities (iron filings, copper filings, dust, etc.) in the hydraulic oil will accumulate more and more, and the fine particles will become smaller and smaller.

Impurities can sometimes be seen with the naked eye. They are very hidden, small, and easy to pass through the hydraulic filter. Moreover, the hydraulic oil will be used for a long time, and various characteristics of the hydraulic oil, such as lubrication performance, viscosity characteristics, anti-wear performance, and stiffness characteristics, will be reduced.

Many impurities in the hydraulic oil are brought into the working device and control elements through the working cycle, which directly leads to the rapid wear of the hydraulic elements of the whole hydraulic system. The prevention method is to replace the hydraulic oil regularly or take samples regularly for inspection. If it is found that it is redundant, it should be replaced in time.