ONLINE MANUAL
Vibrator
Selection
In this section
you will find some suggestions on how to select vibrators, but selection
of the optimal vibrator cannot be done soely by using a calculator, some
graphs and tables. Every single application is to be treated in a different
way. Very often the free vibration is hindered by structural reinforcements,
stiffeners, or other impediments. The following tables may give you an
approximate idea to come close to the optimum, but in the end the final
adjustment has to be done by varying the air pressure and tuning in to
the object's natural frequency or a frequency that provides good working
conditions.
There are many
applications where three or more types of vibrators will do the job. In
these cases the decision on which vibrator to use needs to be made according
to noise and cost, both initial and longterm.
Generally speaking
there are 7 factors to be taken into consideration :
 air consumption
 noise
 space of the unit
/ mounting area
 frequency required
 amplitude / vibrating
energy
 cost / maintenance
cost
 air supply / lubrication
necessary
You will find different
types of vibrator listed in the following tables, listed according to their
force and amplitude. Other factors which are important are cost, noise
and air consumption. For example, it might sometimes be important to use
a Golden Turbine Vibrator, which is less noisy and consumes less than half
the air that a ball vibrator with similar characteristics. For other applications
there are no noise restrictions and a ball vibrator will be sufficient
and save money as well.
How to proceed
:
 Select all the
possible vibrator types and models according to the force needed in the
following tables.
 If silent operation
is required, then do not use noisy types.
 If oilfree running
is required, then do not use T, DAR, and FPvibrators.
 If low air consumption
is required, do not use Ball and RollerVibrators (K, R and DARvibrators).
For air consumption data please refer to Section 10Technical Data.
 Check for the mounting
space needed.
 Compare the costs.
Take into consideration that one single GTvibrator may do the job of two
ball vibrators and that it might be less expensive in the long run.
Bins And Hoppers
Formula
The most important
factor in selecting the optimal vibrator model is the weight of the good
that has to be vibrated. Where bins and hoppers are concerned, only the
material in the sloped part of the bin or hopper is of interest.
Weight of the
content :
W(cont) = Volume
x Volume Weight of the Material
(b1 x L1 + b2 x L2)
W(cont) = 
x h x VW for square bins
2
(r12 x p + r22 x p)
W(cont) = 
x h x VW for conical bins
2
Vibrator
table
Very often it is
better to run two smaller vibrators instead of a large one. The units should
be placed opposite each other on the bin or hopper so the structure is
not stressed toomuch at one single point.
. 
Materials

Weight
of
the
content
in
lbs 
dry/loose
grain, corn,
coffee
dry powders,
flours

humid/wet/bulky
cement, concrete,
sugar
salt, chemicals

. 
Ball
Vibrator
KType

Roller
Vibrator
RType 
Golden
Turbine
GTType 
(Ball)
Roller
Vibrator
RType 
DAR
Vibrator 
Golden
Turbine
GTType 
. 
noisy

noisy

silent

noisy

noisy

silent

100 
K8

. 
GT8

K10

. 
GT8

200 
K8

. 
GT8

K13

. 
GT8

400 
K10

. 
GT8

K16

. 
GT8

600 
K13

. 
GT10

K20

. 
GT8

1000 
K16

. 
GT13

R50

. 
GT8

1600 
K20

R50

GT13

R50

DAR2

GT10

2,000 
K25

R50

GT16

R50

DAR3

GT16

3,000 
K30

R50

GT16

R65

DAR4

GT20

4,000 
K36

R65

GT20

R80

DAR4

GT25

6,000 
K36

R65

GT25

R100

DAR5

GT36

10,000 
. 
R80

GT30

R120

DAR6

GT40

15,000 
. 
R100

GT40

. 
DAR7

GT48

20,000 
. 
R100

GT48

. 
DAR7

GT48S

Selection
table for bins and hoppers
Chutes And
Screens
To select the correct
vibrator, first determine the weight of the material and the volume to
be moved. For smaller chutes and screens, up to a total of about 120 kg,
piston vibrators can be used but for larger chutes and screens, rotary
vibrators, especially turbines, are a better choice.
Where two vibrators
have to be used make sure both are fixed to the same stiffening iron so
they will immediately run in resonance and amplify their forces.
Formula
Total weight to
be vibrated :
W(vib) = Weight
of chute or screen (moving part) + weight of the material inside
Vibrator
table
Total
weight
in lbs 
Ball
vibrator
Ktype
noisy
SA/HF

Roller
vibrator
Rtype
noisy
MA/HF

Roller
vibrator
DARtype
noisy
HA/LF

Turbine
vibrator
GTtype
silent
LA/MF

Piston
vibrator
FPtype
silent
1/LF

10

. 
. 
. 
. 
FP12

20

. 
. 
. 
. 
FP18

30

. 
. 
. 
. 
FP18

40

K8

. 
. 
. 
FP25

60

K8

. 
. 
. 
FP25

80

K10

. 
. 
. 
FP25

100

K13

. 
. 
. 
FP35

150

K16

. 
. 
. 
FP35

200

K20

. 
. 
. 
2xFP35

300

K25

R50

DAR2

GT16

. 
400

K30 
R50

DAR3

GT16

. 
600

K36

R65

DAR4

GT25

. 
800

2x K36

R80

DAR5

GT36

. 
1,000

. 
R100

DAR6

GT36S

. 
1,500

. 
R120

DAR7

GT48

. 
2,000

. 
R120

DAR7

GT48S

. 
4,000

. 
2xR120

2xDAR7

2xGT48S

. 
Selection
table for chutes and screens
The FPvibrators
are available as S(mall), M(edium) and L(arge)
amplitude types
SA = small
amplitude 
LF = low frequency 
MA = medium
amplitude 
MF = medium
frequency 
HA = high amplitude 
HF = high frequency 
Molding Forms
For Concrete and Iron Cast Applications
The important factors
in selecting a vibrator for concrete molds are the mold weight and the
condition of hte concrete, either dry, medium, or wet.
NOTE : Whatever
vibrator you choose from the table, you will always have to perform practical
tests to determine its best working conditions. Especially for concrete,
the time of vibration is of significant importance to insure that the concrete
is vibrated throughout. The table only provides a rough estimate.

Condition

Weight
of
filled mold
in lbs 
WET 
MEDIUM 
DRY 
40

R50
DAR2
GT10S

R50
DAR3
GT10S

R65
DAR4
GT10S

100

R50
DAR2
GT10S

R65
DAR3
GT16S

R65
DAR4
GT16S

200

R65
DAR5
GT16S

R65
DAR5
GT16S

R80
DAR6
GT25S

400

R65
DAR5
GT25S

R80
DAR6
GT25S

R100
DAR6
GT36S

1,000

R80
DAR6
GT36S

R100
DAR6
GT48S

R120
DAR7
2x GT36S

1,500

R120
DAR6
GT48S

R120
DAR7
2x GT36S

2x R120
2x DAR6
2x GT48S

2,000

2x R120
DAR7

2x R120
2x DAR6

2x DAR7

Selection
table for concrete molds
Fixation
of the Vibrators depending on molding form
When more than
10 cm (4 inches) of concrete are to be compacted, DARvibrators (above,
on the right) are recommended. The DARvibrators produce very large amplitudes
which penetrate deeply into the concrete material.
For flat molding
forms (above, on the left), DARvibrators should be used if the total width
is more than 20 cm (8 inches) or 40 cm (16 inches) if two vibrators are
used. If the width is less than 20cm, roller Rseries or turbine GTvibrators
will produce good results.
To get a very
compact and bubblefree surface, a GTvibrator should be run for about ten
seconds. Due to its higher frequency, it compacts sand material closely
around gravel stones.
4.5. Foundry Molding
Forms
To determine the
correct vibrator to separate the silica sand of molding forms use the DRY
column on the table. The use of GTturbines is recommended since they can
be operated without lubrication and their ball bearings are shielded so
the silica sand dust can not harm the bearings. The vibrator should always
be supplied with about 0.5 bar in standby operation so that no silica sand
enters the exhaust port during the filling of the mold. Higher pressure
is necessary to start the vibrator.
NEXT TO MOUNTING PART 1