**
****HOW
TO SELECT & OBTAIN THE PROPER VIBCO VIBRATOR** **IN
FOUR EASY STEPS **

**
**1.
FIND NEEDED VIBRATOR FORCE FOR YOUR APPLICATION.

2.
FIND AVAILABLE VIBRATOR MODELS.

3.
SELECT ELECTRIC, PNEUMATIC OR HYDRAULIC OPERATION.

4.
CONTACT US FOR THE CURRENT PRICE & DELIVERY.

Please note that the following applies only to VIBCO products. Other vibrators
have different characteristics (speed&force) please check with us for
details on the conversion of an existing unit over to a VIBCO vibrator.

###

### A.
BINS, HOPPERS.

To
move the material in a bin or hopper, the friction between the material and the
bin skin has to be broken. Once this is done the material cannot cling to the
bin sides and it will flow out through the discharge. The vibrator force needed
to accomplish this, is for 80% of all applications, very simply calculated as
follows:

Calculate
the weight of the material in the transition or sloping part of the bin.
Normally this is the only place where** **the friction between the material
and the bin sides has to be broken.

**DO
NOT CALCULATE THE TOTAL WEIGHT,**__ ONLY WHAT IS IN THE TRANSITION PART__.

**Note for
calculating: -**

*Imperial*
- use - ** feet** for
sizes &** lbs per cu foot** for material density

*Metric *- use -
** meters** for
sizes & **Kgs per cu meter** for material density.

For
**CONICAL BINS**, calculate as follows:- 0.261 x dia ² X
height x material density.

For
**RECTANGULAR BINS**: - length x width x height x 1/3 x material density.

When
the weight has been calculated, divide this by 10 - the figure you get is the
force or impact needed by your vibrator.

*For
example: The conical part of a 25 ton bin contains 7000 lbs. Divide 7000 by 10,
you need a vibrator with 700 lbs. of centrifugal force or impact.*

Find
suitable vibrator in the VIBCO Catalogue or in Technical data.

**NOTES**:
Additional considerations when sizing vibrator to bins.

1.
If bin side angle is below 30º, select next larger vibrator.

*
**2.*
If bin thickness is extra heavy, select next larger vibrator.

3.
On real sticky or hard to move materials, it is better to use two (2) small
vibrators instead of a large one (find the smaller one by figuring half the
material weight).

**
**### B.
VIBRATING TABLES.

For
Compacting material** - **Dense or fine materials respond best to high
frequency vibration (3000 RPM or more) while light, fluffy or flaky materials
respond best to low frequency vibration (1500 RPM or less).

For
packing or settling materials, use a-vibrator with an impact force of (1.5) to 2
times larger than the weight of the material plus container.

**
**

### C.
VIBRATING SCREENS.

Rule
of thumb: For self-cleaning screen use a vibrator with a centrifugal force
(impact) four (4) times the weight of the material plus the weight of the
screen.

NOTE:
Coarse and lumpy materials respond best to 3000 VPM (vibrations per minute),
powdery and dry materials, to 1500 VPM, but for sticky and wet materials
recommend over 3000 VPM.

**
**### D.
CONSOLIDATING CONCRETE.

Rule
of thumb: For 3" "slump" concrete use a vibrator with the same
force (impact) as the weight of concrete and form.

For
1 *- *2" slump concrete, an additional 30 -50% impact is needed.

For
dry mixes (0 - slump) add 100 - 200%.

NOTE:
For additional sizing consult VIBCO, or request the concrete catalogue.

**E.
FOR SPECIAL APPLICATIONS AND QUESTIONS **

CONTACT
VIBCO FOR RECOMMENDATION.

Back
to top