Winding Equipment We Trust — Tested in Our Own Production

We use CNC winding machines, wire tensioners and accessories in our own coil production every day. As authorized distributors, we recommend reliable brands proven in real manufacturing, with local support and genuine parts.

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LSSF-D-20000 Heavy-Gauge Servo Wire Tensioner

LSSF-D-20000 Heavy-Gauge Servo Wire Tensioner

Winding Equipment We Trust — Tested in Our Own Production

Servo-driven wire tensioner for 0.5–1.8 mm wire. Constant tension 1,000–20,000 gf at speeds to 5 m/s, with live digital readout, tension zeroing and two-way calibration.
Winding MaterialCopper / Enameled / Litz / Aluminum / Flat / Self-bonding / etc.
Winding Precision± 0.01mm
Winding TurnsCustomizable (1T – 10,000T)
Minimum Order QtyCustomizable
Lead Time7–15 business days
Payment TermsT/T, L/C, Western Union
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Typically responds within 24 hours · Free samples available

30+ Years Experience
ISO Certified Factory
Shipped to 30+ Countries

The LSSF-D-20000 replaces passive payoff with a servo-driven active feed. Instead of relying on the wire itself to drag the spool — where tension rises and falls with line speed — a servo motor feeds wire on demand, and tension is set independently by the spring assembly.


Active servo feed. Tension is decoupled from payoff drag, so it no longer drifts as the spool empties or the machine changes speed.


Constant tension under changing conditions. Built-in tension stabilisation holds the set value regardless of line speed, tension-bar position or guide-roller friction.


Live digital readout. Current tension is displayed in real time; the setting range is changed by swapping the tension spring or adjusting its preload.


Field calibration. Tension zeroing plus two-way (＋/－) calibration lets operators re-trim the unit on the machine, preventing drift over long production runs.


Built for heavy gauge. 0.5–1.8 mm wire (approx. AWG 24–13) at line speeds up to 5 m/s.

Applications

Smartphones & 3C Electronics
Automotive Electronics
Industrial Sensors
Precision Instruments
Audio Equipment
Wireless Charging
ModelLSSF-D-20000
Tension range1,000 - 20,000 gf (approx. 10 - 196 N)
Tension accuracy±20 gf (±0.1% F.S.)
Wire diameter0.5 - 1.8 mm (approx. AWG 24 - 13)
Max. line speed5 m/s (300 m/min)
Feed methodServo motor, active feed
Tension adjustmentSpring change / preload adjustment
CalibrationZero, calibrate +, calibrate -
Power supplyAC 220V 50/60Hz
Rated power1 kW
Dimensions (L×W×H)359 × 228 × 425 mm
Net weight8.5 kg
Our standard MOQ is 500 pcs for most coil types. For first-time customers or prototype evaluation, we accept small trial orders of 10-50 pcs. MOQ may vary by product complexity. Contact us for a specific quote.
Yes. Samples are available within 5-7 business days after engineering confirmation. A nominal sample fee applies, which is credited toward your first mass production order.
You can email drawings such as PDF, DWG, or STEP files, or fill out our inquiry form. If you do not have drawings, a written description or physical sample is also acceptable.
We can wind wire as fine as 0.01mm using Zongheng CNC precision winding machines with automated tension control.
Yes. Our special-shaped coil series handles non-circular and irregular geometries. Submit your drawings and our engineering team will assess feasibility.
Standard options include bare copper wire, enameled copper wire, and Litz wire. Custom alloy or coated wire options are available on request.
Yes. Provide your target inductance, frequency, and DC resistance requirements, and we will calculate and wind to specification.
WIRESUN is ISO 9001 certified. Products can ship with test reports and COA. Third-party inspection can be arranged upon request.
All coils are wound on CNC machines with precision control. Each production batch undergoes electrical testing, including inductance, DCR, and impedance checks.
Standard documentation includes packing list, commercial invoice, Certificate of Analysis, and electrical test report. RoHS/REACH documents are available upon request.
We ship worldwide. Regular destinations include Southeast Asia, Europe, the Americas, the Middle East, and Russia. Express and sea freight options are available.
Standard terms are 30% T/T deposit upon order confirmation and 70% balance before shipment. L/C is accepted for larger orders, and Western Union is available for sample fees.
Standard products usually take 15-20 business days. Complex custom coils generally take 20-30 business days. Final lead time is confirmed at quotation stage.
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