Reliable material pumping is an important part of field batching and flooring operations. Contractors need equipment that can move mixed material efficiently while providing control over the pumping rate. The Blastcrete D6528 Mixer/Pump combines a hydraulic squeeze pump with variable-speed operation to provide a flexible material delivery solution.
Designed for field batching and pumping, the D6528 can deliver material at rates of 0 to 12 cubic yards per hour. The machine integrates a 9 cubic foot hydraulic spiral mixer, 12 cubic foot receiving hopper, hydraulic agitator, and 3-inch squeeze pump into one system.
What Is a Hydraulic Squeeze Pump?
A hydraulic squeeze pump uses hydraulic power to operate the pumping mechanism and move compatible pumpable materials from the receiving area toward the application location.
In the D6528, the hydraulic squeeze pump is positioned after the receiving hopper. Material is first mixed in the 9 cubic foot hydraulic spiral mixer and then hydraulically discharged into the 12 cubic foot receiving hopper.
From the hopper, the material enters the D6528's 3-inch hydraulic squeeze pump, which transfers it through the pumping system.
This arrangement creates a continuous path from field batching to material delivery.
D6528 3-Inch Hydraulic Squeeze Pump
The D6528 uses a 3-inch hydraulic squeeze pump driven by a heavy-duty planetary gearbox.
The pump is designed to provide variable output from 0 to 12 cubic yards per hour, allowing operators to adjust material delivery according to project requirements.
The squeeze pump is an important component of the D6528 because it provides the final material-transfer stage after mixing and hopper management.
Key Pump Features
The D6528 pump system includes:
3-inch hydraulic squeeze pump
Heavy-duty planetary gearbox drive
Variable pumping speed
Output from 0 to 12 cubic yards per hour
Pumping tubes designed for long service life
Variable Speed Squeeze Pump
A variable speed squeeze pump provides operators with greater control over the rate at which material is delivered.
The D6528's pumping output can be adjusted between 0 and 12 cubic yards per hour. This range allows the operator to select an appropriate pumping rate for the particular operation, subject to material characteristics and job-site conditions.
Variable-speed control can be useful when the required material flow changes during a project. Instead of operating at one fixed output, the pump can be adjusted within its rated operating range.
How the D6528 Pumping Process Works
The D6528 combines several stages into one coordinated material-handling system.
Mixing Stage
The process begins in the 9 cubic foot hydraulic spiral mixer. Materials are prepared according to the applicable mix requirements.
Dumping Stage
After mixing, the hydraulic mixer dumps the material into the 12 cubic foot receiving hopper.
Hopper Stage
The receiving hopper includes a hydraulic agitator that helps manage material before it enters the pump.
Pumping Stage
The 3-inch hydraulic squeeze pump receives material from the hopper and moves it toward the application area.
Output Control
The pump provides variable output from 0 to 12 cubic yards per hour, giving the operator control over material delivery.
The complete sequence can be represented as:
9 cubic foot mixer → hydraulic dump → 12 cubic foot hopper → 3-inch squeeze pump → application area
Why Variable Pumping Speed Matters
Different flooring and field-batching operations can require different material delivery rates. A variable speed squeeze pump provides flexibility by allowing the operator to adjust output rather than relying on a single fixed pumping rate.
Factors that can affect the desired pumping rate include:
Material characteristics
Project production requirements
Pumping distance
Hose configuration
Application conditions
Job-site layout
Crew requirements
Actual performance can vary based on these factors, so the rated output should be considered alongside the specific conditions of each project.
9 Cubic Foot Hydraulic Spiral Mixer
The pump is only one part of the D6528 system. Before material reaches the squeeze pump, it is prepared in a 9 cubic foot hydraulic spiral mixer.
The mixer includes:
Hydraulic spiral mixing
Hydraulic dump
Clean-out door
9 cubic foot capacity
The hydraulic dump transfers the mixed material directly into the receiving hopper, creating an integrated transition from mixing to pumping.
12 Cubic Foot Receiving Hopper
The D6528 also includes a 12 cubic foot receiving hopper with a hydraulic agitator.
The hopper receives material from the mixer and serves as the intermediate material-handling stage before pumping.
Its hydraulic agitator helps manage the material within the hopper as it moves toward the squeeze pump.
The combination of the larger receiving hopper and variable-speed pump provides a coordinated material-flow system.
D6528 Specifications
Specification D6528
Length 204 inches
Width 88 inches
Water Tank Height 89 inches
Mixer Height — Dump Position 86 inches
Charging Height 48 inches
Output Capacity 0–12 cubic yards per hour
Mixer Capacity 9 cubic feet
Receiving Hopper Capacity 12 cubic feet
Pump 3-inch hydraulic squeeze pump
These specifications can help contractors evaluate the D6528 in relation to job-site access, transportation, production requirements, and pumping needs.
Power Options for the D6528
The D6528 is available with diesel and electric power configurations.
Kubota V1505 Diesel
The diesel configuration uses a Kubota V1505 29 HP water-cooled diesel engine. This provides an engine-powered solution for field applications.
30 HP Electric Motor
An electric configuration uses a 30 HP electric motor with starter and disconnect. This option can be appropriate for locations with a suitable electrical supply.
Contractors can select the power configuration based on the conditions and requirements of the project.
Available Equipment Options
The D6528 can be configured with several options:
Pendant or wireless remote
150-gallon water tank with 2-inch flow meter
Mounted spare tire
Hydraulic pressure washer
Dual axles
Mounted air compressor
These options can provide additional convenience and flexibility for field operations.
Hydraulic Squeeze Pump for Gypsum Flooring
The D6528 is a popular solution for gypsum flooring applications. Its hydraulic mixer and squeeze pump allow compatible gypsum flooring materials to be prepared and pumped at the job site.
The variable-speed pump can provide controlled material delivery, while the integrated hopper and agitator help manage the material between mixing and pumping.
For specific gypsum products, contractors should follow the manufacturer's instructions for mixing, consistency, pumping, placement, and curing.
Pumping Tube Design
The D6528 features pumping tubes designed for long service life. Pumping tubes are an important wear component in squeeze pumping systems, making inspection and appropriate maintenance important parts of equipment operation.
Operators should follow the manufacturer's recommendations for checking and replacing pumping components.
Proper maintenance can help support consistent pumping performance and reduce avoidable equipment downtime.
Maintenance of the Hydraulic Squeeze Pump
Routine maintenance is essential for keeping the pumping system operating properly.
Contractors should follow the manufacturer's recommended procedures for:
Cleaning the pump and material path
Inspecting pumping tubes
Checking hydraulic components
Inspecting connections and fittings
Maintaining the mixer and receiving hopper
Servicing the power system
The mixer also includes a clean-out door to assist with post-operation cleaning.
Benefits of the D6528 Variable Speed Pump
The D6528 combines several useful capabilities into one field machine.
Adjustable Material Delivery
The pump can operate from 0 to 12 cubic yards per hour, providing flexibility in material flow.
Integrated Material Handling
Mixing, hopper management, and pumping are combined in one system.
Field Batching Capability
The D6528 is designed for field batching and pumping applications.
Flexible Power Choices
Diesel and electric configurations are available.
Practical Pump Design
The 3-inch hydraulic squeeze pump uses a heavy-duty planetary gearbox and pumping tubes designed for extended service.
D6528 Hydraulic Squeeze Pump with Variable Speed Pumping CapabilityD6528 Hydraulic Squeeze Pump with Variable Speed Pumping Capability
