Views: 0 Author: leo Publish Time: 2026-10-10 Origin: Site
Selecting a Chain Bucket Sand Dredger involves more than choosing a machine with a high capacity rating. The equipment must match the required dredging depth, underwater material, production target, available working area, and the way excavated material will be processed and transported.
For sand mining operators, dredging contractors, and river engineering companies, an undersized dredger may struggle to meet the project schedule, while an unnecessarily large machine can increase equipment, transportation, and operating costs.
ITECH Co., Ltd. offers chain bucket sand dredgers in several configurations, with published models ranging from QH-60 to QH-400. The listed specifications include dredging depth, main engine power, total power, fuel consumption, overall length, and bucket quantity.
This guide explains how to compare these configurations and what buyers should confirm before selecting a chain bucket dredger for sand mining.
For the full product description and current inquiry details, visit the ITECH Chain Bucket Sand Dredger product page.
A chain bucket sand dredger uses a continuous chain of buckets mounted on a bucket ladder. As the chain circulates, the buckets excavate material from the underwater bed and lift it to a discharge point for further handling.
Depending on the configuration, the recovered material may pass through screening, washing, separation, or conveying equipment before reaching its next destination.
The basic operating process consists of several connected stages:
Positioning and securing the dredger at the working area.
Lowering the bucket ladder to the required working depth.
Running the bucket chain to excavate underwater material.
Lifting the excavated mixture to the discharge area.
Transferring the material for screening, separation, stockpiling, or further processing.
Repositioning the dredger as the work area changes.
The exact operating arrangement depends on the dredger model and project requirements.
This mechanical excavation principle makes a chain bucket dredger worth considering when a project requires continuous bucket-based removal of underwater sand, gravel, mud, or mixed material. Actual suitability depends on sediment characteristics, the quantity of oversized material, working depth, and the equipment configuration.
ITECH lists eight configurations, from QH-60 to QH-400. The following table reproduces the main specifications published on its product page.
Parameter | QH-60 | QH-80 | QH-100 | QH-120 |
|---|---|---|---|---|
Overall length | 23 m | 25 m | 28 m | 35 m |
Main engine power | 75 kW | 88 kW | 105 kW | 115 kW |
Maximum dredging depth | 8 m | 8 m | 10 m | 13 m |
Published maximum capacity | 60 m³ | 80 m³ | 100 m³ | 120 m³ |
Total power | 95 kW | 108 kW | 125 kW | 135 kW |
Published fuel consumption | 14 L/h | 16 L/h | 19 L/h | 20 L/h |
Bucket quantity | 64 | 64 | 64 | 64 |
Parameter | QH-150 | QH-200 | QH-300 | QH-400 |
|---|---|---|---|---|
Overall length | 36 m | 42 m | 46 m | 49 m |
Main engine power | 126 kW | 147 kW | 206 kW | 240 kW |
Maximum dredging depth | 16 m | 20 m | 25 m | 28 m |
Published maximum capacity | 150 m³ | 200 m³ | 300 m³ | 400 m³ |
Total power | 145 kW | 167 kW | 225 kW | 260 kW |
Published fuel consumption | 22 L/h | 25 L/h | 34 L/h | 39 L/h |
Bucket quantity | 64 | 88 | 88 | 88 |
Source: ITECH's Chain Bucket Sand Dredger specifications.
Important capacity note: The product page lists maximum capacity in cubic meters but does not explicitly state the time basis in the table. Buyers should confirm whether the quoted rating refers to an hourly capacity or another production basis, along with the applicable material and operating conditions, before using it in project calculations.
The published data is a useful starting point for comparison, but the appropriate model should be selected against the actual project specification rather than the capacity number alone.
The model range provides different published combinations of size, power, and dredging depth. A useful comparison starts with the physical requirements of the project.
The QH-60 and QH-80 both have a published maximum dredging depth of 8 m. Their listed overall lengths and power requirements differ, as do their published capacity ratings.
When considering these models, buyers should establish the required working depth and the expected production rate first. Then compare the equipment dimensions, installation requirements, and available working space.
A lower-capacity model is not automatically the best choice for every smaller project. Material conditions, operating hours, relocation requirements, and production targets can change the overall equipment decision.
The QH-100 has a listed maximum dredging depth of 10 m, while the QH-120 is listed at 13 m.
These models may be worth evaluating when the project requires a different balance of working depth, published capacity, equipment size, and installed power.
The decision should be based on the actual bed elevation, expected sediment characteristics, and required working range. Buyers should also allow for any operational constraints that may limit the depth available at the site.
The QH-150 and QH-200 have published maximum dredging depths of 16 m and 20 m respectively. Their listed bucket quantities also differ: 64 buckets for QH-150 and 88 for QH-200.
For a project requiring a deeper working range, these configurations deserve technical evaluation. However, the maximum depth alone does not establish the achievable production rate at that depth.
Ask the supplier to review the intended material, bucket operation, discharge arrangement, and operating conditions before confirming the model.
The QH-300 and QH-400 have the largest published capacity ratings in the listed range, at 300 m³ and 400 m³. Their listed maximum dredging depths are 25 m and 28 m, respectively.
These configurations also have greater overall lengths and higher power requirements than the smaller models.
Before choosing a larger chain bucket sand dredger, confirm that the project has sufficient production demand, workable site dimensions, suitable material handling, and an appropriate transportation and assembly plan.
A large capacity rating has limited practical value if screening, stockpiling, transport, or other downstream stages cannot handle the recovered material.
For a chain bucket sand dredger, working depth is a key parameter because the bucket ladder must reach the target excavation level while operating within the equipment's specified range.
Buyers should distinguish between the deepest point that the machine is listed to reach and the depth at which the project must operate consistently.
For example, a dredging site may have a variable bottom profile. Some areas may be shallow, while others require deeper excavation. The project team should provide the planned excavation elevations and identify the deepest working area.
The following details are useful when discussing depth requirements with a manufacturer:
Existing water depth
Required excavation depth below the water surface
Planned final bed elevation
Variation in bottom levels across the working area
Expected water-level changes
Sediment and substrate conditions
The supplier should confirm how the listed dredging depth is defined and whether additional operating restrictions apply to the proposed configuration.
Selecting a model based only on the maximum depth can lead to an unsuitable equipment choice if the actual project geometry has not been considered.
Two sites with the same nominal water depth may require different equipment configurations because their underwater materials behave differently.
Loose sand may be easier to excavate than compacted or mixed material, but actual production also depends on the material's grading, depth, water conditions, and handling arrangement.
The buyer should describe the material and its expected variability rather than simply identifying the project as sand dredging.
When the deposit contains gravel, mud, or a mixture of particle sizes, the bucket and downstream handling arrangements need to be reviewed.
The size distribution of the recovered material can influence whether additional screening is required. Any oversized fragments should be discussed with the supplier before the equipment configuration is finalized.
ITECH describes its chain bucket dredgers as suitable for different soil conditions, including applications where larger rocks may be encountered. This should not be interpreted as unlimited capability for every rock size or hard formation.
For projects containing larger rocks or unusually hard material, provide representative samples, site survey information, or other available material data to the manufacturer. Ask the engineering team to confirm the feasible operating conditions and any restrictions.
The main engine power is only one part of the equipment's overall power requirement. ITECH's published table separately lists main engine power and total power.
For example, the listed QH-200 configuration has a main engine power of 147 kW and a total power of 167 kW. The QH-400 is listed at 240 kW main engine power and 260 kW total power.
These figures should not be treated as interchangeable. Buyers should ask the supplier to explain which systems are included in each figure and confirm the requirements of the proposed configuration.
A project operating cost estimate should also account for the actual working schedule, fuel consumption under site conditions, routine maintenance, wear parts, labor, and support equipment.
For fuel planning, ITECH lists consumption from 14 L/h for QH-60 to 39 L/h for QH-400. These figures should be confirmed in the quotation and treated as published reference values until the applicable operating conditions are established.
A preliminary daily fuel estimate can be calculated using the confirmed consumption rate multiplied by the planned operating hours. The estimate should then be reviewed against the expected load profile and real site conditions.
Do not prepare a project budget using a capacity rating or fuel figure without confirming how that parameter is defined for the quoted machine.
For sand mining projects, the recovered material often needs to be processed after excavation. The full project should therefore account for every stage between the underwater deposit and the final stockpile or saleable product.
Depending on the intended output, the setup may require screening, washing, separation, conveying, stockpiling, or other material-handling equipment.
ITECH describes its chain bucket dredger as capable of being combined with equipment for sand excavation, washing, and separation in suitable configurations. Projects involving mineral recovery may require additional equipment designed for the specific mineral and separation process.
Before ordering, establish:
Material input: What types of sand, gravel, mud, and other materials are expected?
Desired output: Is the target construction sand, graded aggregate, or a material for further mineral processing?
Screening and washing: Which stages are required to achieve the intended product specification?
Transport and stockpiling: How will the recovered material move from the dredger to the processing area or storage location?
Tailings management: Where will rejected material be placed, and what site or regulatory requirements govern its handling?
These questions should be reviewed together. The dredger's rated capacity alone does not determine the output of the complete processing system.
For other equipment categories, buyers can review ITECH's dredging equipment range.
The overall length and configuration of a chain bucket dredger affect more than its presence on the water. They also influence transportation, assembly, access to the site, and the space required for operation.
ITECH describes a modular pontoon arrangement using high-strength bolted connections for its chain bucket dredger offering. Buyers should verify the exact construction and transport arrangement for the model being quoted.
Before dispatch, confirm:
Transport dimensions and weights of individual sections
Loading and unloading requirements
Assembly equipment and site access
Water access and launch arrangements
Anchorage or positioning system requirements
Installation and commissioning responsibilities
Required site utilities and support equipment
The project location should also be assessed for navigational constraints, access conditions, water-level variations, and any permissions required for dredging activity.
If the dredger will move between multiple sites, make sure relocation requirements are included in the original engineering discussion.
A detailed request for quotation allows the manufacturer to recommend an appropriate model and clarify any technical limitations before purchase.
When contacting ITECH, include the following information where available:
Inquiry Detail | Information to Provide |
|---|---|
Project type | River sand mining, lake dredging, reservoir work, or another application |
Working depth | Existing water depth and required excavation depth |
Material | Sand grading, gravel content, mud, rocks, or mixed sediment |
Target output | Required quantity and how the production figure is measured |
Working schedule | Planned hours per day and days of operation |
Model preference | QH-60, QH-80, QH-100, QH-120, QH-150, QH-200, QH-300, QH-400, or no preference |
Processing requirements | Screening, washing, separation, conveying, or stockpiling |
Site details | Waterway dimensions, access, water conditions, and available working area |
Logistics | Destination, transport access, assembly, and commissioning requirements |
Commercial scope | Spare parts, operator training, inspection, and after-sales support |
If the project has a bathymetric survey, sediment report, or preliminary layout, attach it to the inquiry. These documents can help the supplier understand the operating conditions more accurately.
Before confirming an order, request a written specification that defines the model, capacity basis, maximum working depth, power requirements, included equipment, fuel-consumption assumptions, and project scope.
ITECH Co., Ltd. supplies dredging equipment for different inland-waterway, sand recovery, and hydraulic engineering applications.
Its product range includes chain bucket sand dredgers, cutter suction dredgers, jet suction dredgers, dredging pumps, and dredging equipment components. Buyers planning a new project can review the complete ITECH product range to understand the categories available for different project requirements.
The company also provides company information and factory details on its About Us page.
When evaluating a supplier, buyers should compare the proposed equipment against the site conditions, technical requirements, commissioning plan, spare-parts needs, and support arrangements. These details are more useful than selecting a machine based only on a model number or headline capacity.
ITECH's product page lists QH-60, QH-80, QH-100, QH-120, QH-150, QH-200, QH-300, and QH-400. Confirm current availability and the applicable specifications for the model being quoted.
The published product table lists the QH-400 maximum dredging depth as 28 m. Confirm the definition of this value and the actual operating conditions with ITECH before using it for project design.
Start by confirming that capacity figures use the same measurement basis. Then compare the required material, dredging depth, power demand, bucket configuration, operating schedule, and handling system.
No. A larger rating may be unnecessary for a project with a smaller production target or limited site dimensions. The suitable model should match the material, depth, working schedule, and downstream processing capability.
ITECH publishes fuel-consumption figures ranging from 14 L/h for QH-60 to 39 L/h for QH-400. The applicable value and assumptions should be confirmed for the selected configuration and project conditions.
ITECH describes applications involving different soil conditions and larger rocks, but the allowable material size and operating limits must be confirmed for the selected model. Provide information about the material before finalizing the equipment.
ITECH describes integrated excavation, washing, and separation for suitable configurations. The required processing stages depend on the raw material, desired output, and project design. Confirm which equipment is included in the proposed supply.
The right Chain Bucket Sand Dredger should match the project's required depth, material characteristics, production target, power requirements, and handling system.
ITECH's published QH-60 to QH-400 range provides a starting point for model comparison. Before selecting a configuration, buyers should confirm the capacity basis, working limits, fuel-consumption assumptions, transportation requirements, and scope of supply against their specific site conditions.
To discuss your project with ITECH Co., Ltd., provide the dredging depth, underwater material, expected production, project location, and required processing arrangement.
ITECH Co., Ltd.
Website: www.itechdredge.com
Email: info@itechdredge.com
Tel / WhatsApp: +86 150 2776 0800
Additional contact: +86 150 3110 4888
Address: Qingzhou, Weifang, Shandong, China
Chain Bucket Sand Dredger, Chain Bucket Dredger Capacity, QH-60 Chain Bucket Dredger, QH-100 Sand Dredger, QH-200 Chain Bucket Dredger, QH-400 Sand Dredger, Chain Bucket Dredger Specifications, Chain Bucket Dredger for Sand Mining, River Sand Mining Equipment, Bucket Chain Dredger Manufacturer, Sand Dredging Equipment Supplier, ITECH Co., Ltd.
