3 Inch key Type Air Expanding core Shaft for for flexograpic printing machine

Description

The shaft is designed for practical work and is applicable to all types of reels, such as thick, thin, wide and narrow tubes The air expansion shaft is a single part of the winding and unwinding machine. Each part in its structure has a fixed size, which can be disassembled and combined to make maintenance convenient and durable.

Expanding Method:	Air Expanding Type
Expanding Element Material:	Aluminum/Rubber/Steel Lug
Outer Diameter:	74mm-74.5mm(Can be customized as per customers’ demands or drawings)
Inner Diameter of Applicable Tube	76.2mm(Customers need to inform their CORE ID exactly)
Length:	Customized based on drawing
Shaft Body:	Steel/Aluminum alloy
Shaft End Material:	Steel
Colour:	Silver or Brown

Inflatable Shaft Use:
It is suitable for the retractable shaft of coating, slitting, printing, rewinding, laminating, paper making, bag making, plastic and other related machinery, which can effectively improve work efficiency.

Structural features:
The shaft body is made of high-quality steel pipe with chrome-plated surface; aluminum convex key, flexible expansion and contraction; equipped with high-quality rubber liner and quick filling and exhaust nozzle, good sealing effect and long service life; removable shaft head, easy maintenance.

Technique parameter

Model	Paper Tube Inner Diameter	Shaft Diameter Before Expanding	Shaft Diameter After Expanding
1″ Shaft	Φ25.4mm	Φ24.8mm	Φ28mm
1.5″ Shaft	Φ38.1mm	Φ37mm	Φ41mm
2″ Shaft	Φ50.8mm	Φ49mm	Φ54mm
3″ Shaft	Φ76.2mm	Φ74mm	Φ82mm
4″ Shaft	Φ101.6mm	Φ100mm	Φ108mm
6″ Shaft	Φ152.4mm	Φ150mm	Φ158mm
8″ Shaft	Φ203.2mm	Φ200mm	Φ210mm
10″ Shaft	Φ254mm	Φ250mm	Φ260mm
12″ Shaft	Φ304.8mm	Φ300mm

Note: According to customers’ special size requirements, production design can be carried out to meet your needs.

Use of Air Shafts:

1. Wide application: The convex key type air shaft is an independently designed part, ranging from 1 inch to 12 inches. The length and size are determined by the actual needs of the customer. Where there is slit printing, rewinding, coating, and bag making, papermaking, etc. Inflatable shafts can be applied to work equipment or other related center winding machinery.
2. Economical and efficient: The design of the shaft is designed for actual work needs, and it can be applied to various types of coils, such as thickness and width.
3. Long use time and simple maintenance: Although the inflatable shaft is a part of the machine, each part in its own structure has a fixed specification and can be used interchangeably, making it easy to maintain. .
4. Single accessory: The inflatable shaft is a single part of the rewinding and unwinding machine. Each part in its structure has a fixed specification and size, which can be decomposed and combined to make maintenance convenient and durable.
5. Professionalism: There are professional engineers and technicians for market research on the design, installation and use of inflatable shafts.
6. Large bearing capacity: The inflatable shaft can be designed according to the actual model, using high-quality steel to increase the bearing capacity. For example, steel materials can be selected for those with a bearing weight of more than 1 ton.
7. Short operating time: It only takes 2 seconds to inflate and deflate the roll tube to separate and place the roll tube. It is simple and convenient to place the roll tube, safe and applicable. It can be applied to all the machinery and equipment used for winding and unwinding. Shafts. The length of the inflatable shaft can be up to six meters or more, and the length can be up to several hundred millimeters. The length is determined according to the needs of customers.
8. The keyed inflatable shaft expands to a single key strip, and the fulcrum spreads to each key strip to balance the force, which is suitable for mechanical rewinding of articles with heavier carrying capacity.

Air shaft prcocessing flow

Application

​​

Order Details

Item Name	3 Inch Lug Type Air Expanding core Shaft
MOQ(Minimum Order Quantity)	1Pc
Lead time	12-15 days after receiving the deposit
Calculated Weight	14kg/Meter(Steel Body),9kg/Meter(Aluminum Body)
Package	Carton/Wooden Box
Price Term	EXW,FOB, CIF, etc
Payment term	TT,L/C,Western Union
Country of Origin	China