Dredge Components
Close Blade Cutter Head
Electric close blade cutter heads designed for reduced spillage, higher production, and lower environmental impact. Featuring high torque ring motors and innovative blade design.
Electric Close Blade Cutter Head
With the aim of improving the current dredging process and its environmental impact, Dredge Yard has developed a new electric close blade cutter head and drive. By utilizing the cutter's center axis of rotation and designing a unique cutter blade shape, the result is a state-of-the-art cutter featuring a closed-type cutter blade to prevent the cut material from falling.
It is fully electrically driven and uses high torque ring motors, with a threaded connection to the main body for easy assembly. The cutter head includes a center axis suction system for more fluent flow and is adaptable to any standard teeth in the market.
It can be installed in any existing dredger and is equipped with composite bearings that are completely water-flushed. Additionally, it boasts a high moment of inertia, enhancing its performance and reliability.
Close Blade vs Conventional Cutter Head
The electric close blade cutter head offers significant advantages over conventional hydraulic cutter systems.
Close Blade Cutter Head / Torque Motor
- Direct electric ring motor drive
- No long shafts or gearboxes required
- Closed blade prevents material spillage
- Center axis suction for fluent flow
- Higher efficiency than hydraulic
Conventional Cutter Head
- Hydraulic drive with long shafts
- Requires gearboxes and couplings
- Open blades allow material spillage
- Off-center suction mouth
- Lower efficiency due to drive losses
Key Advantages
The electric close blade cutter head delivers superior performance across multiple critical areas.
Reduction of Spillage
Significantly less spillage is achieved during the dredging process in both over-cut and under-cut due to the unique cutter head design.
- Archimedes screw pump design
- Aerofoil blade design
- Material flows toward suction pipe
More Production
More production is achieved due to the scooping effect of the closed blade system. Cut material is trapped inside the blades and directed toward the suction pipe.
- Scooping effect captures material
- Airfoil accelerates material to hub
- High suction velocity
Low Turbidity
Low turbidity due to the design effects that minimize sediment disturbance during operation.
- Higher flow through the blades
- Scooping effect
- Particles confined inside cutter head
Accurate Cut
Accurate cut is achieved with the cutter head design providing precise dredging control.
- Less spillage left
- Under cut and over cut have similar effect
- No need for a clean cut
High Torque
The close blade cutter head uses high torque ring motors giving advantage compared to hydraulic drives.
- Electric torque/ring motors
- High number of poles
- Permanent magnets rotor
- Different speed and torque possible
High Efficiency
The cutter head uses direct electric ring motors mounted on the cutter special hollow shaft, eliminating drive losses.
- No long shafts or bearing blocks
- No gearboxes or couplings
- Higher than hydraulic drive
Easy Installation and Maintenance
- Fewer parts to assemble
- Composite bearings
- No friction in the motor
- Cutter hub threaded assembly
- No oils and seals
High Moment of Inertia
A unique feature of the electric drive cutter head is the high moment of inertia. Utilizing the center axis of rotation as a suction system, most of the weights are placed far from the axis of rotation. With this, the arrangement is much simpler and eliminates the use of expensive long shaft arrangements.
Improves Dredge Pump Performance
Since the Drill Cutter is utilizing the center axis of rotation as a suction system, it eliminates the use of suction mouth which results in a much more fluent suction piping arrangement.
Ready to Upgrade Your Cutter System?
Our team is ready to help you evaluate the electric close blade cutter head for your dredging operation. Get in touch for a customized quote.
