New Stainless Steel Inflatable Air Shaft

Product Overview
AstraRoll’s New Stainless Steel Inflatable Air Shaft is built for reliable roll support and core gripping in winding, unwinding, slitting, rewinding, and other continuous web handling equipment. The shaft expands when supplied with compressed air, creating a secure connection with the inside of the roll core during operation. When the air is released, the expanding mechanism retracts to simplify roll removal and changeover.

The stainless steel construction makes this type of air shaft suitable for applications where durability, structural strength, and resistance to moisture or demanding production environments are important. It is well suited to machinery used for printing, packaging, coating, laminating, converting, paper, film, and other roll-to-roll processes.

Non-Standard Manufacturing for Different Equipment
Air shafts are not always interchangeable between machines. Shaft length, working width, support arrangement, core dimensions, installation space, and operating conditions can vary significantly from one application to another. AstraRoll therefore focuses on non-standard manufacturing, allowing the shaft to be configured around the customer’s actual equipment rather than forcing the machine to accommodate a fixed product.

The support seat, shaft dimensions, expanding structure, working length, total length, and other mechanical interfaces can be adjusted according to the application. Reference configurations can cover a stretch roll surface length of approximately 580–1800 mm, total lengths of around 730–1925 mm, and substrate widths from approximately 500–1600 mm, while other dimensions can be produced according to specific requirements.

Stable Core Engagement
The pneumatic expansion mechanism provides a practical way to secure the roll core during winding or unwinding. Once inflated, the expanding elements press against the inner surface of the core, helping maintain stable contact between the shaft and roll.

A properly matched air shaft can reduce core slippage and provide more consistent torque transmission, which is particularly important when processing continuous webs at production speed. Deflation releases the core for faster roll removal and easier changeover.

Stainless Steel Construction
Stainless steel provides a robust shaft structure for industrial applications where long-term mechanical performance and resistance to moisture or corrosive working conditions are important.

For equipment operating in demanding environments, material selection can be matched to the actual application rather than using the same construction for every project. AstraRoll can also adjust the shaft dimensions and mechanical configuration according to the required load, working width, installation arrangement, and machine design.

Applications

The New Stainless Steel Inflatable Air Shaft can be integrated into:

• Winding and unwinding machines
• Slitting and rewinding equipment
• Printing machinery
• Packaging and converting lines
• Coating and laminating equipment
• Paper and film processing machines
• Flexible packaging production
•  Roll-to-roll material handling systems
• Other continuous web processing equipment

The shaft is particularly suitable for applications where reliable core engagement, convenient roll changeover, and a durable stainless steel construction are required.

Source Factory and Competitive Pricing
AstraRoll manufactures inflatable air shafts directly, providing customers with a source-factory solution instead of relying on multiple trading intermediaries. Direct manufacturing gives us greater control over dimensions, machining, assembly, and production consistency while helping keep the overall cost competitive.

From a replacement shaft for existing equipment to a customized shaft for new machinery, AstraRoll can support prototype development, small-batch requirements, and repeat production. Customers can provide the core dimensions, working width, machine interface, installation requirements, or technical drawings, and we can develop the shaft around the actual application.

Reference Specifications

Product Type: Stainless Steel Inflatable Air Shaft

Material: Stainless Steel

Support Seat: 170 × 45 × 70 mm, reference configuration

Stretch Roll Surface Length L1: 580–1800 mm, customizable

Total Length L3: 730–1925 mm, customizable

Applicable Substrate Width: 500–1600 mm, reference range

Core Compatibility: Customized according to application

Installation Configuration: Non-standard customization available

The above dimensions are reference configurations rather than fixed limitations. AstraRoll can manufacture the air shaft according to the customer’s actual machine, core size, web width, installation space, and operating requirements.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.