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ruian chuangbo machine co.,ltd
Home ProductsAir Expanding Shaft

Three Inch 75mm Unwinding Air Expanding Shaft

We have cooperate with CBB Ruian Chuangbo for more than 8 years, Chuangbo is one of our main suppliers in China. During that time, we have never had any quality problems, and the delivery is very timely. We will help solve some of our questions about the products in time. I believe we will cooperate better and longer

—— Kaku Kohli

High-quality products and timely delivery are of great help to the production of our machines. We don’t have to treat other Chinese suppliers like we do. Chuangbo always delivers on time before the delivery date, which is very good. Supplier

—— Lorena Martínez

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Three Inch 75mm Unwinding Air Expanding Shaft

Three Inch 75mm Unwinding Air Expanding Shaft
Three Inch 75mm Unwinding Air Expanding Shaft Three Inch 75mm Unwinding Air Expanding Shaft Three Inch 75mm Unwinding Air Expanding Shaft

Large Image :  Three Inch 75mm Unwinding Air Expanding Shaft

Product Details:
Place of Origin: Zhejiang
Brand Name: CBB
Certification: CE
Model Number: Sl
Payment & Shipping Terms:
Minimum Order Quantity: 1 piece
Price: USD100-400/piece
Packaging Details: Plywood carton
Delivery Time: 7-30 days
Supply Ability: 2000 pieces per month
Detailed Product Description
Diameter: 74mm-75mm Body Material: Medium Carbon Steel
Surface: Chrome Coating Lug Material: Aluminum
Inside Expanding: Rubber Type: Lug Type
High Light:

unwinding Air Expanding Shaft


75mm Air Expanding Shaft


75mm lug type air shaft

Three Inch 3" Lug Type Air Expanding Shaft For Rewind And Unwind Big Capacity


    Air shaft is a special shaft for winding and unwinding. Air shaft is easy to operate, Just aired the shaft through the air valve and when user want to lock the web. Just push the core activities of the air valve to deflate, then web can be removed easily.

    And three inch 3 inch lug type air expanding shaft is most useful for the machinery, and most air shaft not mention the diameter mostly is three inch 75mm diameter.



    Three inch diameter 75mm Air shaft application is almost everywhere, in all industries

  1. Flexo printing machine
  2. Offset printing machine
  3. Gravure printing mahcine
  4. Cutting machine
  5. Slitting machine
  6. Coating machine
  7. Lamination machine
  8. Bag making machine

    Size of Air Expanding Shaft

Specifications Diameter of air shaft before fill up air Diameter of air shaft after fill up air Inside diameter of suitable paper core
1" Ø 24mm Ø 27 - Ø 28mm Ø 25 - Ø 26mm
1.5 " Ø 36mm Ø 40 - Ø 42mm Ø 38 - Ø 38.5mm
2 " Ø 49mm Ø 52 - Ø 54mm Ø 50 - Ø 51mm
3 " Ø 74mm Ø 79 – Ø 82mm Ø 75.5 - Ø 78mm
4 " Ø 99mm Ø 104 – Ø 106mm Ø 101 - Ø 102mm
5 " Ø 125mm Ø 130 – Ø 133mm Ø 126 - Ø 128mm
6 " Ø 150mm Ø 154 – Ø 156mm Ø 151 - Ø 153mm
8 " Ø 200mm Ø 206 – Ø 213mm Ø 202 - Ø 204mm
10" Ø 250mm Ø 260 - Ø 264mm Ø 252 - Ø 256mm
12" Ø 300mm Ø 308 - Ø 310mm Ø 302 - Ø 305mm


   Our advantages:

1) Inflatable operation time is short

only takes 3 seconds for the separation and placement of the inflating shaft and the core can be complete the inflating and deflating, and it can be tightly occluded with the core without decomposing any part at the end of the shaft.

2) Core placed simple

it can be moved and fixed at any position of the cure on the shaft surface by inflating and deflating.

3) Heavy loading

Because of the carbon steel body material, the capacity of loading is big.

4) High economic efficiency

Shaft design for special functions, thick, thin, wide, narrow all kinds of paper tube can all be used.

5) Long life time

Although the inflatable shaft is a mechanical accessories, but its own structure of each part has a fixed specification, can be used interchangeably, so that its maintenance is convenient.

6) Factory directly supply.

We are manufacturer and professional in it, and all specification can be customized.


    Air shaft type: 

    According to the expanding elements material, three inch air expanding shaft has following type:

  • Lug type (Steel material)
  • Lug type (Aluminum material)
  • Leaf type
  • Multi bladder type
  • Other type

    Why choose us

1: Biggest supplier for aluminum guide roller and air shaft in East China

2. Perfect service and after-sale too.

3. We have our own engineer, problems will be solved within 24hours.

4. We have own R & D engineer, will help to solve any problems about the machine and parts

5. One-to-one customer service tracking processing.

6. Companies carry out the ERP management, fast response.

7. Quality assurance, one year warranty.




    1. When can I get the quotation?

Usually quoted within 24 hours after receiving your inquiry. If you are very urgent to get the price, please call

us or tell us in your email, so that we can regard your inquiry priority.

    2. How should I place the order?

For air shaft and roller, please show us your drawing, or let us know your request, and then we will provide you drawing for confirmation.

    3. What is the MOQ?

We don't have MOQ request, 1 pieces order is OK.

    4. What about the lead time for production?

Up to your quantity, normally less than one month.


About CBB Chuangbo:

    Ruian Chuangbo Machinery Co.,Ltd. is one of the biggest manufacturer of machinery parts in East China

    We have a factory more than 20,000 square meters and more than 180 employees in the company.

    In 2019, our annual sales exceeded US$7 million, and we successfully listed on the Dutch Caribbean Securities Exchange, DCSX at the end of 2019.

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Contact Details
ruian chuangbo machine co.,ltd

Contact Person: Cai

Tel: 86-15558888956

Fax: 86-577-65001588

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