Industrial Precision Servo Tensioner with Active Wire Feeding for 0.2-0.8mm Wire and 200-2000gf Tension Range

High Precision Servo Tensioner for Winding Machine

Enameled Wire Constant Tension Factory Direct

1. Product Overview: The Heart of Precision Winding

Why NHE Recommends Servo Tensioners?

As a manufacturer of winding machines spare parts,

we know that tension stability is the key to quality.

Traditional mechanical or magnetic tensioners rely on passive friction,

which often causes wire breakage

or deformation, especially with fine wires.

The NHE Servo Tensioner Series uses an Active Wire Feeding System.

Built-in DC Servo Motor: Automatically feeds the wire based on winding speed.

Closed-Loop Feedback: Real-time monitoring ensures the tension remains constant,

whether the machine is accelerating, decelerating, or running at constant speed.

Result: Zero wire breakage, precise coil dimensions, and higher efficiency.

2. Series Classification: Choose Your Model

We offer four specialized series to meet different winding complexities.

Choosing the right series depends on your coil structure and process requirements.

A. SF Series: Standard Single-Stage Tension (The High-Speed Workhorse)

(Best for: General purpose coils with consistent winding speed)

This is our most popular series for mass production. It provides a single,

ultra-stable tension value from start to finish. If your winding process is continuous

and does not require tension switching, the SF series offers the best price-performance ratio.

Applications:

Water Valve Coils & Solenoid Valves: Where high-speed winding (up to 20,000 RPM)

is needed for massive output.

General Power Relays: For standard telecommunication or appliance relays.

Inductors & Transformers: Simple Bobbin winding.

Key Advantage: Replaces traditional mechanical felt tensioners to eliminate wire scratching

and breakage, improving yield by over 95%.

Recommended Models: SF800, SF2000

3.product features

Tension Rod Specification

①,Wire Break Alarm Interval: The angle at which the tension rod is

located when a wire break triggers the alarm

②,Standby Interval.

③,Working Interval: Acceleration buffer zone.

④,Fault Alarm Interval: When the tension rod triggers the fault angle

Note: When the tension rod enters the fault alarm interval, the motor will

stop rotating and output an alarm signal. Return the tension rod to

the wire break alarm interval to relieve the fault alarm.

Picture Display:

Frequently Asked Questions (FAQ)

Q1: What is the main advantage of Servo Tensioners over Magnetic Tensioners?

A: Magnetic tensioners rely on passive friction (braking), which causes tension fluctuation when winding speed changes.

NHE Servo Tensioners use an active wire feeding system with a built-in motor. It automatically adjusts the wire feed speed to

match the winding machine, ensuring constant tension even during rapid acceleration or deceleration.

This is critical for preventing breakage in fine wires (<0.1mm).

Q2: How do I choose between the SF (Single) and STD (Dual) series?

A: Choose SF Series: For standard coil winding, where tension remains constant.

Choose STD (Dual-Stage) Series: If your process requires wrapping the wire around the terminal pin at high speed.

You can set a higher tension for the pin wrapping (to ensure a tight connection) and a lower tension for

the main coil body (to prevent breakage), switching automatically via the machine's I/O signal.

Q3: Is it difficult to install these tensioners on my existing winding machine?

A: Not at all. The installation is straightforward. You only need to provide a DC 24V/48V power supply

and connect two signal wires (Ready/Alarm). We provide a detailed Wiring Diagram

and English Manual with every unit to guide your engineers.

Q4: Do I need to calibrate the tensioner?

A: Yes, for the highest precision, we recommend performing a "Zero Calibration" (Zeroing)

when installing a new tension arm or spring.The SF/SFQ series features a simple menu knob or

button to perform auto-zeroing in seconds.

Q5: What happens if the wire breaks during winding?

A: The tensioner has a built-in Wire Breakage Alarm. If the tension arm drops below the limit angle

(indicating a break or empty spool),the tensioner will immediately send a stop signal to your winding machine

to prevent producing defective parts.

Q6: How often should I replace the Tension Arm and Spring?

A: This depends on your usage intensity.

Tension Spring: We recommend checking its elasticity every 6 months.

Wool Felts & Ceramic Eyelets: These are wear parts. Check them monthly and replace them

if they show signs of grooves or wear to protect the wire insulation. NHE stocks all these spare parts for fast delivery.

Q7: Can I use one tensioner for different wire sizes?

A: Yes, but within a range. For example, the SF800 covers 10g-800g. If you switch from 0.05mm wire (low tension)

to 0.25mm wire (high tension), you may need to change the Tension Spring to a stiffer one to maintain stability.

We offer a full spring kit (T1-T19) for this purpose.

Q8: Why does the tensioner display an error code?

A: The LED display on SFQ/SFW models provides real-time diagnostics.

Common codes indicate "Over-current," "Over-speed," or "Limit Position Error."

Please refer to the User Manual provided by NHE, or contact our support team for a quick resolution.