Hydraulic Tank - CISSOKO

FAQ Category

Hydraulic Tank

Q What maintenance tips can extend the service life of hydraulic tanks?

A

Keep the tank surface clean and ventilated; regularly check and replace the air breather and sealing parts; regularly clean internal impurities and replace deteriorated hydraulic oil; avoid long-term overload operation of the system; check the tank welding seams and oil ports regularly to prevent leakage; and do a good job of anti-rust protection for outdoor installed tanks.
Q Why is the hydraulic system overheating caused by the tank?

A

The main reasons are too small tank volume leading to insufficient heat dissipation capacity, blocked internal oil circuit and poor oil circulation, dirt and scale on the tank wall affecting heat dissipation, and unreasonable installation position of the tank with poor ventilation and heat dissipation conditions.
Q How to test the quality of a new hydraulic tank?

A

Qualified new tanks need to pass strict tests, including air tightness test (no air leakage under rated pressure), water pressure test (no deformation and leakage of tank body), welding seam flaw detection, surface anti-corrosion layer detection, and overall size parameter calibration to ensure no quality defects.
Q Are hydraulic tanks customizable?

A

Yes, full customization is supported. We can customize non-standard volume, special size and shape, special oil port positions and specifications, personalized installation holes, special anti-corrosion treatment, and matched integrated accessories according to customers' equipment installation space and system working requirements.
Q What is the purpose of the partition plate inside the hydraulic tank?

A

The internal partition plate divides the tank into an oil suction area and an oil return area. It can prolong the circulation path of hydraulic oil, effectively precipitate impurities in the oil, separate air bubbles, avoid direct impact of high-speed return oil on the suction port, and stabilize the oil temperature and system operation.
Q Can hydraulic tanks work in high and low temperature environments?

A

Standard hydraulic tanks are suitable for ambient temperatures of -20℃ to 60℃. For ultra-low temperature (below -20℃) environments, customized low-temperature resistant materials and sealing accessories are required. For high-temperature working conditions, thickened tank walls and enhanced heat dissipation structures are needed to ensure stable operation.
Q What are the consequences of a dirty hydraulic tank?

A

Impurities and sludge accumulated in the tank will pollute the hydraulic oil, block oil filters and oil circuits, cause wear and jamming of hydraulic valves, cylinders and pumps, lead to system pressure instability, slow equipment response, abnormal noise, and even cause equipment shutdown and component damage in severe cases.
Q How often should a hydraulic tank be cleaned?

A

For conventional indoor industrial equipment, clean the tank and replace hydraulic oil every 6 to 12 months. For harsh working environments with much dust, high humidity or high load operation, the cleaning cycle is shortened to 3 to 6 months. Daily regular inspection of internal oil pollution is also required.
Q How to solve the problem of oil leakage of hydraulic tanks?

A

First, check the leakage position. For seal leakage at oil ports and covers, replace aging or damaged sealing gaskets. For welding seam leakage of the tank body, perform professional welding repair and pressure testing. For loose bolt connection, tighten the bolts evenly in sequence to ensure tight fitting.
Q Why does the hydraulic tank produce foam in the oil?

A

Common reasons include insufficient oil volume leading to short oil return distance and air mixing, damaged or unqualified air breather, aging seal of the tank cover leading to air inhalation, excessive system flow velocity, and deteriorated hydraulic oil. Foam will cause system pressure instability and noise.
Q Is surface painting treatment necessary for carbon steel hydraulic tanks?

A

Yes, it is necessary. Carbon steel is easy to rust and oxidize. Professional anti-rust primer and wear-resistant topcoat can isolate air and moisture, prevent the tank body from rusting and corrosion, extend service life, and also make the tank surface beautiful and resistant to oil stain erosion.
Q What is the function of the hydraulic tank oil gauge?

A

The oil gauge is used to visually observe the real-time liquid level of hydraulic oil in the tank, helping operators judge whether the oil volume is normal. It can effectively avoid equipment failures caused by insufficient oil (resulting in suction emptying) or excessive oil (resulting in oil overflow and poor heat dissipation).
Q Why do hydraulic tanks need an air breather?

A

When the hydraulic system works, the oil liquid level in the tank will rise and fall with the cylinder movement, causing air volume changes inside the tank. The air breather can realize air ventilation, balance internal and external pressure, and filter dust and moisture in the outside air, preventing impurities from entering the oil liquid and polluting the hydraulic system.
Q What key parameters should be considered when purchasing a hydraulic tank?

A

The key parameters include tank volume, material and thickness, overall size and installation hole position, working pressure, oil port specification, accessory configuration (breather, oil gauge, drain valve, filter), surface treatment process and applicable hydraulic oil medium type.
Q How to choose the right capacity of a hydraulic tank?

A

The tank capacity is determined by the hydraulic system flow and working cycle. For conventional industrial stationary equipment, the tank volume is usually 3 to 5 times the system rated flow per minute. For frequent start-stop and high-load mobile equipment, it is recommended to choose 5 to 8 times the flow to ensure sufficient heat dissipation and oil circulation space.
Q What is the difference between open and closed hydraulic tanks?

A

Open tanks are connected to the atmosphere through an air breather, with simple structure and low cost, suitable for most indoor industrial equipment. Closed tanks are fully sealed, isolated from outside air and dust, can prevent oil pollution and moisture ingress, and are applicable to high-precision, dust-free, humid and harsh outdoor working conditions.
Q What are the common types of hydraulic tanks?

A

According to structure, they are divided into open type and closed type hydraulic tanks. According to installation mode, they include vertical, horizontal and side-mounted tanks. According to usage scenario, they are classified into standard industrial tanks, mobile machinery tanks (excavators, loaders) and marine hydraulic tanks.
Q What materials are hydraulic tanks usually made of?

A

The mainstream materials are carbon steel and stainless steel. Carbon steel hydraulic tanks are cost-effective, sturdy and durable, suitable for ordinary industrial mechanical scenarios. Stainless steel (304/316) tanks have excellent corrosion and rust resistance, ideal for outdoor, marine, chemical and humid working environments. A small number of lightweight engineering plastic tanks are used for small hydraulic equipment.
Q What are the main functions of a hydraulic tank?

A

Hydraulic tanks have six core functions: storing sufficient hydraulic oil for system circulation, dissipating heat generated during hydraulic system operation, precipitating solid impurities in hydraulic oil, separating mixed air and foam in oil liquid, eliminating system pressure pulsation, and installing and fixing hydraulic accessories such as oil filters and oil gauges.
Q What is a hydraulic tank?

A

A hydraulic tank (hydraulic oil reservoir) is a key auxiliary component of hydraulic systems. It mainly stores hydraulic oil, dissipates system heat, separates air, foam and solid contaminants from the fluid, and stabilizes system pressure and oil circulation to ensure reliable hydraulic equipment operation.

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