Knowledge

What are fire-resistant hydraulic oils and how are they classified?

Posted by Hamid Shakouri on 3rd Sep 2024

What are fire-resistant hydraulic oils and how are they classified?
Fire-resistant hydraulic oil is specially formulated to prevent or minimize the risk of fire in hydraulic systems, especially in environments where the risk of fire or explosion is high. These oils are used in hydraulic systems that operate under high temperatures or where there is a potential for exposure to flames or sparks.There are several types of fire-resistant hydraulic oils: Water-containi …
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What is Diesel Particle filter (DPF) system?

Posted by Hamid Shakouri on 3rd Sep 2024

What is Diesel Particle filter (DPF) system?
DPF is a special filter located in the exhaust to filter soot in the exhaust gas.There are various DPFs, including metal fiber DPFs, silicon carbide DPFs, and cordierite DPFs, but the most common type is cellular ceramic honeycomb filters. Most of the soot is caused by oil burning in the engine chamber. This filter is washable, and the main problem with it is its limited capacity to trap the soot. …
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Can NAS be converted to ISO 4406?

Posted by Hamid Shakouri on 3rd Sep 2024

Yes, the NAS (National Aerospace Standard) cleanliness code can be converted to the ISO 4406 cleanliness code. The conversion typically involves determining the equivalent ISO code based on the particle counts specified by the NAS code. If you have the NAS code and want to convert it to ISO 4406, you can use conversion charts or equations provided by industry sources or hydraulic fluid analysis se …
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What are mineral hydraulic oil Classifications ?

Posted by Hamid Shakouri on 3rd Sep 2024

The most popular hydraulic liquid (hydraulic oil) is mineral oil-based, with suitable additives added as per the application. The requirements for this hydraulic oil are set out in ISO 6743-4 with the designations HL, HM, and HV. The German designations HL, HLP, and HVLP are used universally for hydraulic oils, in accordance with DIN 51524. Classification Properties H and HH Minera …
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