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Question: What is the hydraulic oil tank on a dump truck?
The hydraulic oil tank of a dump truck serves as the "core component for fluid storage and supply" within its hydraulic system. It is responsible for storing hydraulic fluid and delivering clean oil to the entire hydraulic lifting system (including gear pumps, hydraulic cylinders, valve assemblies, etc.), while also performing heat dissipation and sedimentation functions.
Core Details:
Main Tank: A large-capacity black tank (typically metal) that stores hydraulic fluid internally. Its wall design enhances structural strength while aiding heat dissipation.
Top Components:
Filler Port (with cap): Used for replenishing or replacing hydraulic fluid.
Integrated Valve Assembly/Sensor: The black device atop may be a return oil filter, oil level sensor, or breather valve, responsible for filtering contaminants in return oil, monitoring fluid level, or equalizing internal/external tank pressure.
Mounting Structure:
Metal brackets on both sides secure the tank to the vehicle frame, accommodating vibrations during operation.
This differs from the "accumulator" function described earlier:
The accumulator "stores hydraulic energy," while this tank "stores the hydraulic fluid itself," serving as the hydraulic system's "fluid reservoir."
What is the typical capacity of a hydraulic oil tank?
1. Light/Medium-Duty Dump Trucks (Payload ≤ 20 tons)
Capacity typically ranges between 70L-150L. For instance, standard engineering dump trucks commonly use 80L, 100L, or 120L specifications, while some smaller models may even feature capacities as low as approximately 50L.
2. Heavy-duty dump trucks (payload 20-50 tons)
Capacity generally ranges from 150L to 300L. For example, heavy-duty dump trucks from brands like Sinotruk and Delong often feature hydraulic reservoirs of 180L, 200L, or 250L.
3. Mining Super-Heavy-Duty Dump Trucks (Payload ≥50 tons)
Capacity increases significantly, typically ranging from 400L to 750L (or larger). For instance, the Hitachi EH1700 mining dump truck features a 448L hydraulic tank, while the North Heavy Industries TR100 mining truck boasts a 557L tank to accommodate the lifting demands of oversized hydraulic cylinders.
What are its characteristics?
Product features:
1. Install a valve plate at the top for easy maintenance
2. Integrated oil level sight glass
3. Good anti-corrosion performance. Using three layers of paint, sturdy, lightweight, and scratch resistant
4. Strictly test to ensure no leakage, rust, grease, or malfunction.
5. Design or OEM according to customer requirements.
6. Widely used for hydraulic oil storage in dump trucks
7.National patented product,93L hydraulic oil tank is made of cold-rolled box plate formed in one go, ensuring cleanliness. Passed the six degree of freedom vibration test of GB 18296-2001 national fuel tank testing standard, with reliable performance.
How to Select the Right Hydraulic Oil Tank for Dump Trucks?
When selecting a hydraulic tank for dump trucks, focus on three core dimensions: hydraulic system requirements, vehicle compatibility, and operating conditions. Below are specific steps and key points:
I. Match the core parameters of the hydraulic system
Calculate the base tank capacity based on system flow rate and volumetric efficiency. Typically, the tank capacity should be "3-5 times the maximum flow rate of the hydraulic pump per minute" (3 times for light-duty dump trucks, 5 times for heavy-duty/mining applications). Example: If the hydraulic pump displacement is 25 ml/rev and the engine speed is 1500 rpm, the pump flow rate = 25 × 1500 = 37.5 L/min. The tank capacity must be at least 37.5 × 3 = 112.5 L; a 120 L tank is a practical choice.
For hydraulic cylinder volume requirements, consider the total stroke volume (accumulate volumes for multi-stage cylinders). The tank capacity should be ≥ 2-3 times the total cylinder volume to prevent insufficient oil during lifting.
II. Matching Based on Vehicle Model and Installation Conditions
Select the tank shape (primarily square/rectangular) according to the reserved space on the dump truck frame (length, width, height). Avoid components like the drive shaft and tires to ensure installation does not impair vehicle operation.
For heavy-duty dump trucks, select tanks with reinforced ribs and high-strength mounting brackets (as shown in your image) to prevent deformation or detachment during rough terrain operation.
III. Adapting to Operating Conditions
For harsh environments (mines/construction sites), select fuel tanks with:
- Reinforced metal construction (impact resistance)
- Dual return oil filters (reducing contaminants)
- Fuel level/temperature sensors (real-time monitoring)
to minimize frequent failures.
For frequent start-stop cycles or heavy-lift operations, select large-capacity tanks (to enhance heat dissipation) to prevent hydraulic oil degradation due to high temperatures.
IV. Selection of Auxiliary Features
Prioritize tanks with breather valves + dust filters (to balance internal/external pressure and prevent dust ingress).
For vehicles operating outdoors long-term, consider tanks with insulation layers (to prevent oil viscosity increase in low-temperature environments).
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Qingdao Yibolan Machinery & Equipment Co., Ltd was established in January 2022, is located in the beautiful coastal city of Qingdao, China. Our main products are various kinds of hydraulic machinery and equipment, such as
hydraulic cylinder
https://yibolan.en.made-in-china.com/product/FmnpXdYZXMRT/China-Durable-Hydraulic-Cylinder-Ybl6-172-5510W51-for-Heavy-Duty-Dump-Trucks.html
hydraulic oil tank
https://yibolan.en.made-in-china.com/product/tQJpedUMvoYz/China-Yx-081-061-053-Xdbz-Fuel-Tank-for-Dump-Truck-Front-end-tipping-.html
etc.
https://yibolan.en.made-in-china.com/product/YxgUlQzoBWRJ/China-Hydraulic-Directional-Valve-for-Dump-Truck-Hxf-0220-230.html
https://yibolan.en.made-in-china.com/product/NxEUDVtdJbrL/China-Gear-Pump-for-Dump-Truck.html
We are a high technology company which focusing on the development and production of the hydraulic system parts. Our products adopt high strength alloy materials and advanced surface treatment processes, with thousands of load tests and has extremely high-pressure resistance and long service life. Our hydraulic equipment can be adapted to various types of engineering machinery and widely applied in construction, highways, ports, docks, mining areas and more working condition. It can also meet both lightweight and heavy-duty lifting requirements.
Since our establishment, we have been focusing on the hydraulic industry for years, with the "finest quality and innovation " as the core concept, we are committed to providing high-performance hydraulic equipment such as hydraulic cylinders, hydraulic oil tanks, and hydraulic power units for global customers. Our company has become the leading hydraulic technology service provider and have successfully established long-term partnerships with customers in South Pacific, Africa, America, and Southeast Asia.
Our core value is to focus on customers' requirements, through providing accurate services and supports, to establish excellent business relationship and achieve sustainable development together.
We have our own metal processing plant with a building area of 10000 square meters. Our team includes designers, engineers, production personnel, welders, mechanical operators, and quality inspectors, providing customized metal processing services for global customers throughout the entire process.
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