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Air bearings for transporting heavy cargo

Air bearings

Principles of air bearings

Principles of air bearings
This was created in Flash. View the full contents on the web site.

Compressed air enters through an air inlet, inflates the diaphragm, and balances the load.
(The internal pressure is the value of the load divided by area of the diaphragm.)
The air stored up in the diaphragm then leaks through a small hole and escapes through the space between the diaphragm and the floor. As the air escapes, it forms an extremely thin film that functions as a lubricant.
This is the principle behind the air transportation device known as an air bearing.
Note Linking the air bearing to an air tank reduces the rippling of air, increasing the operational stability.

Flotation video (inflating, powder, water)Flash

inflatingWatch the video

powder Watch the video

water Watch the video

 

Features of air bearings

1/1000th of the friction

The friction coefficient shrinks to one-thousandth of its original value, allowing a heavy object to be moved with an extremely small amount of force.

Freedom of movement

The object can be moved and rotated freely around the floor as movement is not constrained in any direction.

Capacity exceeding 1,000 tons

All manner of heavy objects (exceeding 1,000 tons) can be transported by being floated on air at pressures of 0.15 to 0.35 MPa.

Easy setup

Because pressure supports the heavy object being transported, simple frames can be used for ease of setup.

Maintenance-free design

Air bearings require no maintenance and have absolutely no parts — such as sleeves — that require oiling.

No floor damage

There's no need to worry about floor wear and tear, as objects are lifted on a film of air before being transported.

Thin-profile design

Air bearings require very little vertical space as they are quite thin. (Even a 300 kN unit requires only about 30 mm.) As long as a small amount of space is available, an air bearing can be positioned beneath existing equipment and made available for immediate use simply by connecting an air source.

Clean design

Air bearings are clean, dust-proof, noise-free, and vibration-free, and they do not pollute the environment. What’s more, the air around the device remains mostly undisturbed and the floor is not damaged.
 

Models of air bearings

Air bearings available by the unit
Air bearings can be used by attaching and piping them to frames created by the customer.
Note Requires an air tank.
For more information, seeDesigning air bearings.

Flash

Example models

 

Standard models

Model
(0.15 MPa)
Capacity
(kN)
Dimensions (mm) Installation dimensions
(mm)
Lifting
height
F
Consump-
tion
Flow
Q
Weight
(kg)
Circular
models (C)
Square
models (S)
Supply
port
diameter
d
Spacer
R
Insert
width
C
Support
width
E
Clea-
rance
S
External
size
D
Supply
position
l
External
size
L
Supply
position
l
B1-0006 2.3 150 55 150 55 RC
1/8
11 - - - 6 0.12 0.7
B1-0008 4.3 195 55 230 55 1/4 14 234 214 9 8 0.12 2.0
B1-0010 6.2 260 80 290 50 3/8 22 294 374 9 10 0.14 3.3
B1-0012 9.0 310 105 340 100 3/8 22 344 324 9 12 0.16 4.7
B1-0014 12.0 360 125 390 100 3/8 22 394 374 9 14 0.18 5.9
B1-0017 19.0 440 165 470 170 3/8 22 474 454 9 17 0.20 9.0
B1-0020 26.0 515 207 550 175 3/8 22 554 534 9 20 0.25 12.0
B1-0024 34.0 610 255 640 220 3/8 25 644 624 9 22 0.35 17.0
B1-0030 55.0 765 331 800 305 1/2 25 804 784 9 22 0.45 27.0
B1-0036 80.0 915 380 950 380 1/2 25 954 934 9 25 0.60 36.0

Medium-pressure models

Model
(0.25 MPa)
Capacity
(kN)
Dimensions (mm) Installation dimensions
(mm)
Lifting
height
F
Consump-
tion
Flow
Q
Weight
(kg)
Circular
models (C)
Square
models (S)
Supply
port
diameter
d
Spacer
R
Insert
width
C
Support
width
E
Clea-
rance
S
External
size
D
Supply
position
l
External
size
L
Supply
position
l
C19-0014 20.0 360 125 390 100 3/8 22 394 374 9 14 0.18 5.9
C19-0017 31.0 440 165 470 170 3/8 22 474 454 9 17 0.20 9.0
C19-0020 43.0 515 207 550 175 3/8 22 554 534 9 20 0.25 12.0
C19-0024 57.0 610 255 640 220 3/8 25 644 624 9 22 0.35 17.0
C19-0030 90.0 765 331 800 305 1/2 25 804 784 9 22 0.45 27.0
C19-0036 133.0 915 380 950 380 1/2 25 954 934 9 25 0.60 36.0
C19-0043 189.0 - - 1,118 470 1/2 32 - 1.130 - 30 0.90 25.0
C19-0048 225.0 - - 1,220 533 3/4 32 - 1.230 - 40 1.20 30.0
 

High-pressure models

Model
(0.35 MPa)
Capacity
(kN)
Dimensions (mm) Installation dimensions
(mm)
Lifting
height
F
Consump-
tion
Flow
Q
Weight
(kg)
Circular
models (C)
Square
models (S)
Supply
port
diameter
d
Spacer
R
Insert
width
C
Support
width
E
Clear-
ance
S
External
size
D
Supply
position
l
External
size
L
Supply
position
l
E19-0048 315.0 - - 1,220 533 3/4 32 - 1.230 - 40 1.20 30.0
E19-0054 390.0 - - 1,420 615 3/4 40 - 1.430 - 40 1.40 38.0

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