Winch Tension Sensor for Constant Tension Winches

Product Specifications

Technical details and manufacturing context for Tension Sensing Mechanism

Definition

The Tension Sensing Mechanism is a component used in constant tension winches, particularly in passive systems. Its function is to continuously monitor the tensile load on the winch line and provide real-time feedback to the winch control system. This feedback allows the winch to automatically adjust payout or reeling to maintain a preset constant tension, compensating for external forces such as wind, waves, or load movement without requiring active operator input. The mechanism typically uses a load cell, strain gauge, or mechanical linkage (e.g., a spring-loaded idler pulley or lever arm) that deflects proportionally to the applied tension. This deflection is converted into an electrical signal (e.g., change in resistance or voltage) or a mechanical displacement, which is then processed by the control unit to determine the current tension. The measured tension is compared against the target setpoint, and the winch motor is driven accordingly. The mechanism is available in configurations using alloy steel or stainless steel, with stainless steel 17-4PH (ASTM A693) as a corrosion-resistant option for marine environments. Key parameters include a rated tension range of 5–50 kN, measurement accuracy of ±0.5% full scale, output signal options of 4–20 mA or 0–10 V, supply voltage of 24 V DC ±10%, operating temperature range of -20 to +70 °C, ingress protection ratings from IP65 to IP67 (per IEC 60529), overload capacity of 150% full scale (200% ultimate), weight between 2.5 and 8.0 kg, and cable diameter range of 6–26 mm. These values are reference ranges and must be verified for the specific model and application. The mechanism is designed for integration with PLC systems and is suitable for washdown environments. Always confirm model-specific specifications and standards with the legal manufacturer or supplier before procurement.

Working Principle

The mechanism measures tension by converting mechanical deflection into an electrical signal. A load cell or strain gauge deforms under load, changing its electrical resistance, which is measured and converted to a tension value. Alternatively, a mechanical linkage such as a spring-loaded idler pulley deflects proportionally to tension, and this displacement is sensed. The resulting signal (4–20 mA or 0–10 V) is sent to the winch control unit, which compares it to the target setpoint and adjusts the winch motor to maintain constant tension.

Common Materials

Alloy Steel, Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Tension Range	5–50 kN	Select based on maximum cable tension in application.
Measurement Accuracy	±0.5% FS	Full scale accuracy; higher accuracy available on request.
Output Signal	4–20 mA / 0–10 V	Analog output for PLC integration.
Supply Voltage	24 V DC ±10%	Reverse polarity protected.
Operating Temperature	-20–+70 °C	Outside range may affect accuracy.
Ingress Protection	IP65–IP67	IP67 for washdown environments.IEC 60529
Overload Capacity	150% FS	Without damage; 200% FS ultimate.
Material	Stainless steel 17-4PH	Corrosion resistant for marine use.ASTM A693
Weight	2.5–8.0 kg	Depends on rated capacity.
Cable Diameter Range	6–26 mm	Must match winch cable size.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Load Cell / Strain Gauge Part
The core sensing element that converts mechanical strain from applied tension into an electrical resistance change.

Material: Stainless Steel, Alloy Steel
Mounting Bracket / Frame Part
Provides structural support and secure integration of the sensing element into the winch assembly.

Material: Carbon Steel, Alloy Steel
Signal Conditioning Circuitry
Amplifies, filters, and converts the raw signal from the sensing element into a stable, standardized output for the control system.

Material: Electronic Components (PCB, ICs)
Idler Pulley Optional
Deflects with line tension on mechanical-linkage sensing builds.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tension Sensing Mechanism.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Constant Tension Winch (for passive systems)

View system integration details

Manufacturers of Tension Sensing Mechanism

Manufacturer profiles associated with Tension Sensing Mechanism.

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Frequently Asked Questions

What is the typical output signal of the Tension Sensing Mechanism?

The mechanism provides an analog output signal of 4–20 mA or 0–10 V, which is suitable for PLC integration. The exact output type should be confirmed for the specific model.

What materials are available for the Tension Sensing Mechanism?

The mechanism can be made of alloy steel or stainless steel. For corrosion resistance in marine environments, stainless steel 17-4PH (ASTM A693) is an option. Confirm the material with the supplier.

What is the operating temperature range?

The specified operating temperature range is -20 to +70 °C. Operating outside this range may affect measurement accuracy. Verify the limits for your application.

What is the overload capacity?

The mechanism can withstand 150% of full scale without damage, with an ultimate capacity of 200% full scale. Do not exceed these limits to avoid permanent damage.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 100 bar
other spec:	Cable diameter range: 5-50 mm, Tension range: 0.5-50 kN
temperature:	-20°C to +80°C

Tension Sensing Mechanism

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards