Unwind Stand with Brake

Product Specifications

Technical details and manufacturing context for Unwind Stand with Brake

Definition

The Unwind Stand with Brake is a critical component within the Separator Feeding & Tensioning Unit. It serves as the primary support structure for holding material rolls (such as paper, film, or fabric) while providing controlled unwinding through an integrated braking system. This ensures consistent material feed and proper tension management during processing operations. The stand is designed to accommodate rolls with widths from 300 to 1600 mm, diameters from 400 to 1200 mm, and weights up to 3000 kg. The integrated brake system provides torque from 50 to 500 N·m, enabling unwind speeds from 50 to 300 m/min with tension accuracy of ±1% to ±3%. The shaft diameter ranges from 50 to 150 mm to match core sizes. The unit operates within a temperature range of -10°C to 60°C and is available with IP ratings from IP54 to IP65 for dust and moisture protection. The frame is constructed from carbon steel or stainless steel, with frame material grades Q235 to Q345 per GB/T 700. The stand's weight ranges from 300 to 1500 kg, and its footprint varies from 1200×800×1200 mm to 2500×1500×2000 mm. These specifications are reference ranges; actual values must be confirmed with the manufacturer for specific applications. The unwind stand is essential for maintaining proper tension in downstream processes, preventing material damage or misalignment. It is commonly used in industries such as printing, packaging, and textile processing. Proper selection requires consideration of roll dimensions, material type, and process speed. Regular maintenance of the braking system is necessary to ensure consistent performance. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The unwind stand supports the material roll on a shaft or mandrel. The integrated brake system applies controlled resistance to the rotating roll, regulating the unwinding speed and maintaining proper tension in the material as it feeds into downstream processes. The braking force can be mechanical, pneumatic, or electromagnetic, depending on the design. The brake torque is adjustable to match material tension and roll inertia. As the roll diameter decreases during unwinding, the brake adjusts to maintain constant tension. The stand's structure provides stability and alignment, ensuring smooth operation. The operator can set the desired tension and speed parameters, and the brake responds accordingly. This principle ensures consistent material feed and prevents issues such as web breaks or wrinkles.

Common Materials

Carbon steel, Stainless steel (for corrosion resistance)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Roll Width Capacity	300–1600 mm	Determines the maximum material width the stand can handle.
Roll Diameter Capacity	400–1200 mm	Larger diameters require stronger shafts and brakes.
Max Roll Weight	500–3000 kg	Affects structural strength and brake torque requirement.
Brake Torque	50–500 N·m	Must match material tension and roll inertia.
Unwind Speed	50–300 m/min	Higher speeds require dynamic balancing and faster brake response.
Tension Accuracy	±1–±3 %	Critical for consistent material quality.
Shaft Diameter	50–150 mm	Must match the core inner diameter of the roll.
Operating Temperature	-10–60 °C	Outside this range, brake performance may degrade.
IP Rating	IP54–IP65	Higher rating for dusty or wet environments.IEC 60529
Frame Material	Q235–Q345	Q345 for higher strength and load capacity.GB/T 700
Weight	300–1500 kg	Affects installation and floor loading.
Footprint (L×W×H)	1200×800×1200–2500×1500×2000 mm	Ensure adequate space for operation and maintenance.

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

Support Frame Part
Provides structural support for the entire unwind stand assembly

Material: Carbon steel
Mandrel/Shaft Part
Holds and supports the material roll during unwinding operations

Material: Alloy steel
Brake Assembly
Applies controlled resistance to regulate unwinding speed and maintain tension

Material: Steel with friction materials
Tension Control System
Monitors and adjusts braking force to maintain consistent material tension

Material: Various (electronic components, sensors)

Applied To / Applications

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

Separator Feeding & Tensioning Unit

View system integration details

Manufacturers of Unwind Stand with Brake

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Frequently Asked Questions

What is the primary function of the Unwind Stand with Brake?

It holds material rolls and provides controlled unwinding through an integrated braking system, ensuring consistent material feed and proper tension management.

What are the typical roll width and diameter capacities?

The roll width capacity ranges from 300 to 1600 mm, and the roll diameter capacity ranges from 400 to 1200 mm. These are reference ranges; confirm with the manufacturer for specific models.

What types of braking systems are available?

The braking force can be mechanical, pneumatic, or electromagnetic, depending on the design. The brake torque ranges from 50 to 500 N·m.

What materials are used for the frame?

The frame is typically made of carbon steel or stainless steel, with frame material grades Q235 to Q345 per GB/T 700. Stainless steel is used for corrosion resistance.

Data Basis

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

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pressure:	Not applicable (mechanical component)
other spec:	Max roll weight: 2000 kg, Max roll diameter: 1500 mm, Max unwind speed: 100 m/min
temperature:	-20°C to 80°C

Product Specifications

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