SEO Title:WDF400-7D Direct Drive 7-Die Copper Rod Breakdown Wire Drawing Machine
Meta Description:CE-certified WDF400-7D rod breakdown wire drawing machine: 7 dies, 400 mm capstan, Φ8 mm to φ3 mm, 16 m/min, direct drive servo motors, no gear reduction box.
Listing Title / H1:WDF400-7D Direct Drive 7-Die Copper Rod Breakdown Wire Drawing Machine
WDF400-7D Direct Drive 7-Die Copper Rod Breakdown Wire Drawing Machine
Rod breakdown machine for copper and aluminum rod — Φ8 mm inlet to φ3 mm outlet, 400 mm capstan, maximum speed 16 m/min, seven dies and direct drive servo motors with no gear reduction box.
WDF400-7D rod breakdown wire drawing machine — main unit (source file: 829A375114146234.JPG)
Product Summary
The WDF400-7D is a distributor-type, 7-die direct drive controllable slip copper large wire drawing machine used as a rod breakdown machine in wire and cable plants. It draws copper or aluminum rod from a maximum inlet diameter of Φ8 mm down to φ3 mm through up to seven dies, with a mechanical elongation rate range of 8%–46% and a maximum speed of 16 m/min.
The main unit is driven by direct drive servo motors with a different number of poles for each drum. The drive motor shaft is the wire drawing drum shaft, so no gear reduction box is used anywhere on the machine. The model is listed in the manufacturer's CE Verification of Conformity, certificate No. CE-JL26020401-AL-MD.
Key Features
Direct Drive Servo, No Gear Reduction Box
Each drum is driven by a direct drive servo motor with a different number of poles; the motor shaft is the drawing drum shaft. The intermediate gearbox design and its installation steps are removed, and there is no reduction box to service.
Seven-Die Breakdown Range
Maximum inlet Φ8 mm, outlet φ3 mm, up to 7 dies and a mechanical elongation rate of 8%–46%. One machine covers the rod-to-intermediate wire reduction steps of cable conductor production.
Tungsten Carbide Sprayed Drums
The brushed drum is treated with tungsten carbide spraying, which the manufacturer specifies for wear resistance and a long drum service life.
Immersion Cooling of the Drawing Zone
The wire drawing part is cooled by immersion, so the drawing die and the copper wire receive cooling and lubrication. This effectively extends the service life of the drawing die and the drum wheel.
Drop Coiler with Non-Stop Frame Changing
The machine adopts a drop coiler for wire winding and features a non-stop frame changing function, which supports production continuity during spool changes.
PLC Control and Variable Frequency Regulation
PLC coordinated control with variable frequency speed regulation gives high control accuracy, fast tracking speed and smooth operation. The speed ratio can be adjusted in real time and arbitrarily according to the material and on-site conditions.
Technical Specifications
Parameter
Specification
Model
WDF400-7D
Type
Rod Breakdown Machine
Machine material
Steel
Max inlet diameter
Φ8 mm
Outlet diameter
φ3 mm
Diameter of capstan
400 mm
Max. number of dies
7
Mechanical elongation rate
8%–46%
Max. speed
16 m/min
Main drawing motor power
37 kW × 3, 22 kW × 3, 37 kW × 1 (AC)
Max. OD of payoff coil
2000 mm
Spooler motor power
15 kW (AC)
Total main power of unit
229 kW
Certification
CE — Verification of Conformity, No. CE-JL26020401-AL-MD, authority ICG, EU market
Models and Options
This datasheet covers one model: WDF400-7D with a 400 mm capstan, seven dies, payoff coil up to 2000 mm OD, a 15 kW (AC) spooler motor and a main drawing motor set of 37 kW × 3, 22 kW × 3 and 37 kW × 1 (AC).
The manufacturer's CE verification scope additionally lists other models, including WDF450-13DT, WDF450-11DT, WDF450-9DT and the LHD450-13DT / LHD450-11DT / LHD450-9DT series with their AL versions. Technical data for those models is not part of this datasheet; request the relevant specification sheet if one of them is required.
Materials and Structure
Machine material is steel. The drive concept is direct drive: one servo motor per drum with a different number of poles, the motor shaft doubling as the wire drawing drum shaft, and no gear reduction box in the drive train. Drum surfaces receive tungsten carbide spraying. The drawing section is cooled by immersion. Wire winding uses a drop coiler with non-stop frame changing, and the control system combines PLC coordinated control with variable frequency speed regulation.
Applications
Wire and cable manufacturing: large-scale stretching and annealing of copper or aluminum rods used in power cables and building wiring. The manufacturer notes that efficient cable workshops have generally replaced old models with motorized designs. Listrong's main markets are the Middle East, India and South East Asia.
Customization
The WDF400-7D is built around the specification above: 400 mm capstan, seven dies, Φ8 mm inlet to φ3 mm outlet and payoff coil up to 2000 mm OD. The machine speed ratio can be adjusted in real time and arbitrarily according to the material and on-site conditions, so the drawing result can be tuned at the customer's plant.
The manufacturer's scope of business covers development design, whole plant planning and technical advice, manufacture, installation, commissioning and after-sales service, so configuration questions can be discussed directly with the engineering team. Requirements outside the parameters listed in this datasheet should be confirmed with the sales team before ordering.
FAQ
What rod sizes can the WDF400-7D process?
Maximum inlet diameter is Φ8 mm and the outlet is φ3 mm, using up to 7 dies. The mechanical elongation rate range is 8%–46%.
What is the maximum drawing speed?
16 m/min.
Is the machine CE certified?
Yes. It is listed in a Verification of Conformity for CE, certificate No. CE-JL26020401-AL-MD, issued by ICG for the EU market under EN ISO 12100:2010 and EN 60204-1:2018/A1:2025 (issued 2026-02-10, valid to 2031-02-09).
Does the machine use a gear reduction box?
No. Each drum has its own direct drive servo motor with a different number of poles, and the motor shaft is the drawing drum shaft, so there is no gear reduction box.
How is the drawing zone cooled?
The wire drawing part is cooled by immersion, which gives the drawing die and the copper wire cooling and lubrication and extends the service life of the die and the drum wheel.
What payoff coil size and total power does the unit support?
Maximum OD of the payoff coil is 2000 mm. The spooler motor is 15 kW (AC) and the total main power of the unit is 229 kW.
How is the wire wound?
The machine adopts a drop coiler for wire winding and features a non-stop frame changing function for production continuity.
Inquiry Information
Manufacturer: Jiangsu Listrong Mechanical & Electrical Co., Ltd. — founded 2009, 15,000 m² factory, 70 employees, 15 engineers, annual output 550 sets, export ratio 40%.
