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Expandable Winding Mandrel

Name: Expandable Winding Mandrel
Brand: CANGZHOU KENUO INTERNATIONAL CO., LTD.
Price: 10000 USD
Availability: InStock

Price 10000 USD ($)/ Unit

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MOQ : 1 Unit

Expandable Winding Mandrel Specification

Product Type
Expandable Winding Mandrel

General Use
Used for securing coils/rolls during winding or unwinding processes in converting industries

Material
High-grade Steel with Aluminum Alloy

Type
Expandable

Weight (kg)
Approx. 12 25 kg (varies with size)

Computerized
No

Automatic
No

Control System
Pneumatic Control

Power Source
Pneumatic/Manual

Coil Diameter
Expands from 3 to 12 (interchangeable options available)

Winding Head
Customizable as per requirement

Winding Speed
Depends on winding machine (typically up to 300 m/min)

Winding Spindle
Expandable Mandrel

Air Pressure
5-7 bar (recommended for optimal expansion)

Drive Type
Manual or Pneumatic

Dimension (L*W*H)
Custom Built Standard Lengths: 1000 mm to 2500 mm

Feature
Easy to expand and collapse, High Torsional Strength, Non-slip gripping

Color
Silver / Metallic Grey

Expansion Method
Air-operated (Expandable by air pressure)

Grip Leaves
Hardened Steel/Aluminum Leaves for positive grip

Surface Treatment
Anodized/Chrome Plated for corrosion resistance

Ambient Temperature
0°C to 50°C

Core ID Range
76 mm (3") to 300 mm (12")

Maximum Load Capacity
Up to 1000 kg (depending on mandrel size)

Safety Features
Pressure Relief Valve integrated for safe operation

End Connection
Flanged or Shaft Mounted as required

Maintenance
Low, parts easily replaceable

Application Industries
Paper, Film, Foil, Textile, and Printing

Expandable Winding Mandrel Trade Information

Minimum Order Quantity
1 Unit

Supply Ability
10 Units Per Month

Delivery Time
60 Days

About Expandable Winding Mandrel

Expandable winding mandrel

Description: The Mandrel is for coil winding machine use. Its outer diameter is expandable, motorized or manual adjustable. The diameter variation is big, taking-off is convenient, suitable for both horizontal coil winding machine and vertical coil winding machine.

Main Specification

Spec	Expanding range/mm	Expanding range with pad/mm	Max coil weight/t	Bar length
KTM-1	200-300	300-400	1	1200
KTM-2	300-400	400-500	2	1200
KTM-3	400-500	500-600	2	1500
KTM-4	500-600	600-700	3	1500
KTM-5	600-700	700-800	5	2000
KTM-6	700-800	800-900	5	2000
KTM-7	800-900	900-1000	8	2000
KTM-8	1000-1200	1200-1400	10	2500
KTM-9	1200-1400	1400-1600	10	2500
KTM-10	1400-1600	1600-1800	10	2500
KTM-11	1600-1800	1800-2000	15	3000
KTM-12	1800-2000	2000-2200	15	3000

Efficient and Versatile Coil Handling

This mandrel simplifies winding and unwinding operations across multiple industries, ensuring precise and secure coil grip. Its expansion capability ranges from 3 to 12, making it adaptable for varied applications including paper, film, and textile processing. The durable construction and custom length options provide flexibility in integrating with different machine setups.

Low-Maintenance and Safe Operation

Designed for minimal maintenance, the mandrel features easily replaceable parts and an integrated pressure relief valve. The air-operated system allows quick expansion, while the corrosion-resistant finish and robust build further augment its operational longevity. Users benefit from reduced downtime and enhanced safety during everyday use.

FAQs of Expandable Winding Mandrel:

Q: How is the expansion process of the mandrel conducted?

A: The expansion is achieved through air pressure, using 5-7 bar to actuate hardened steel or aluminum grip leaves. This provides a secure and non-slip grip on the coil, ensuring reliable operation during both winding and unwinding.

Q: What industries commonly use the Expandable Winding Mandrel?

A: Industries such as paper, film, foil, textile, and printing utilize this mandrel for their winding and unwinding processes, owing to its adaptable core diameter range and robust construction.

Q: When should the mandrel be maintained or serviced?

A: Regular inspection for wear and air system integrity is advised but the mandrel is designed for low maintenance. If performance declines or gripping becomes unreliable, individual parts can be easily replaced to restore functionality.

Q: Where can this mandrel be installed?

A: The mandrel is suitable for installation in winding machines where expansion and secure coil holding are required. End connections are customizable as flanged or shaft mounted to match specific machine requirements.

Q: What are the advantages of the pressure relief valve featured in this mandrel?

A: The integrated pressure relief valve mitigates over-pressurization risk during air-operated expansion, enhancing operator safety and protecting the internal components from possible damage.

Q: How does the mandrel improve winding efficiency and product safety?

A: Its air-operated, rapid expansion mechanism and robust grip leaves minimize coil slippage and allow faster, safer winding speeds (up to 300 m/min), reducing downtime while ensuring product integrity.

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