Dancer Arm for Tension Control Systems

Product Specifications

Technical details and manufacturing context for Dancer Arm

Definition

The Dancer Arm is a critical component in tension control systems, typically part of a dancer roll assembly. It functions as a mechanical arm that moves in response to changes in material tension, providing feedback to control systems to adjust speed or torque, thereby maintaining consistent tension in materials such as paper, film, textiles, or metal during winding, unwinding, or processing operations. The arm pivots around a fixed point, with a dancer roll mounted at its free end. As material tension changes, the arm moves upward or downward. This movement is detected by position sensors (potentiometers, encoders, or proximity sensors) that send signals to a controller. The controller then adjusts the speed of drive motors to maintain the desired tension setpoint. The Dancer Arm is available in carbon steel, stainless steel, or aluminum alloy, with the aluminum alloy typically being 6061-T6 per ASTM B211. Key parameters include operating pressure (1.0–1.6 MPa), stroke length (50–200 mm), max load capacity (500–2000 N), positioning accuracy (±0.05 mm), response time (10–50 ms), operating temperature (-40–85 °C), ingress protection (IP54–IP65 per IEC 60529), and weight (5–15 kg). These values are reference ranges and must be confirmed for the specific model and application. The Dancer Arm is used in various industries, including paper, film, textiles, and metal processing. It is essential for maintaining product quality and preventing defects such as wrinkles, breaks, or uneven winding. Proper selection requires consideration of material type, line speed, tension range, and environmental conditions. Verification of specifications and standards should be done with the legal manufacturer or supplier.

Working Principle

The dancer arm pivots around a fixed point, with a dancer roll mounted at its free end. As material tension changes, the arm moves upward or downward. This movement is detected by position sensors (potentiometers, encoders, or proximity sensors) that send signals to a controller. The controller then adjusts the speed of drive motors to maintain the desired tension setpoint. The arm's movement provides mechanical feedback that is converted into electrical signals for precise control.

Common Materials

Carbon steel, Stainless steel, Aluminum alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Stroke Length	50–200 mm	Customizable per application
Max Load Capacity	500–2000 N	Exceeding may cause arm deflection
Positioning Accuracy	±0.05 mm	Critical for tension consistency
Response Time	10–50 ms	Faster for high-speed lines
Operating Temperature	-40–85 °C	Outside range may affect seals
Ingress Protection	IP54–IP65	IP65 for dusty/wet environmentsIEC 60529
Material	6061-T6	Aluminum alloy; optional stainless steelASTM B211
Weight	5–15 kg	Depends on stroke and load

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

Pivot Bracket Part
Provides mounting point and rotational axis for the arm

Material: steel
Arm Body Part
Main structural member that transfers force from dancer roll to pivot

Material: steel or aluminum
Dancer Roll Mount Part
Interface for attaching the dancer roll to the arm

Material: steel
Sensor Mounting Plate Part
Platform for attaching position feedback sensors

Material: steel or aluminum

Applied To / Applications

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

Dancer Arm or Tension Sensor

View system integration details

Manufacturers of Dancer Arm

Manufacturer profiles associated with Dancer Arm.

Sourcing Dancer Arm from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the function of a dancer arm in a tension control system?

The dancer arm moves in response to changes in material tension, providing feedback to the control system to adjust speed or torque, thereby maintaining consistent tension.

What materials are available for the dancer arm?

The dancer arm is available in carbon steel, stainless steel, and aluminum alloy (typically 6061-T6 per ASTM B211).

What are the typical operating pressure and stroke length ranges?

Operating pressure is typically 1.0–1.6 MPa, and stroke length ranges from 50 to 200 mm, customizable per application.

How should I verify the specifications for my application?

All listed parameters are reference ranges. You must confirm model-specific values and standards with the legal manufacturer or supplier.

Data Basis

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

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Dancer Arm

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	0 to 10 bar
other spec:	Max tension load: 5000 N, Stroke length: 100-1000 mm, Response time: <50 ms
temperature:	-20°C to 80°C

Dancer Arm

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards