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Cleveland Vibrator Company
SI Single Impact Vibrator
for Permanent Installation
 
The single impactor delivers one impact at a maximum frequency of once every three seconds through a five-port spool valve. A timer is used to vary the cycle required. Single impactors are most effective for sticky materials because they are less likely than continuous vibration to cause packing in hoppers. Low maintenance is guaranteed by a combination of a springless design and only one moving part. The single impactor makes less noise and consumes less air than most air and electric vibrators because there is no continuous blast of exhausting air.
 
Like VMSAC and VMS, SI has a one-piece, rugged ductile iron cylinder housing which decreases the weight of the vibrator. It may be mounted on any appropriately sized mounting channel, and comes complete with heavy-duty mounting fasteners and a gasket.
 
Installation and Operating Kits
 
 
VMRR
 MODEL PISTON DIA.
in/cm
A
in/cm
B
in/cm
C
in/cm
D
in/cm
E
in/cm
F
in/cm
G
in/cm
H
in/cm
WT.
lb/kg
AIR CNSMP.
cf/smoke
liter/stroke
@ 80 psig
5.4 bar
ENERGY PER IMPACT
ft lb/cm kg
psig/bar
@20
@1.4
@40
@2.7
@60
4.1
@80
@5.4
@100
@6.8
11251 1/4
3.2
6 3/8
16.2
3
7.6
2
5.1
3
7.6
1/2
1.3
1/4
0.6
2
5.1
3/8
1.0
8
3.6
.010
0.3
3
41
6
83
8
111
11
152
14
194
12002
5.1
6 1/2
16.5
4 1/2
11.4
3
7.6
4 1/2
11.4
5/8
1.6
1/4
0.6
3
7.6
1/2
1.3
18
8.2
.020
0.6
6
83
12
166
19
263
25
346
31
429
13003
7.6
8 5/16
21.1
5 3/4
14.6
4 1/8
10.5
5 3/4
14.6
3/4
1.9
3/8
1.0
4 1/8
10.5
1/2
1.3
32
15
.084
2.4
21
290
43
595
64
885
86
1,189
108
1,493
13503 1/2
8.9
10
25.4
6
15.2
4 1/8
10.5
6
15.2
3/4
1.9
1/2
1.3
4 1/8
10.5
3/4
1.9
39
18
.120
3.4
43
595
86
489
129
1,784
172
2,378
215
2,973
14004
10.2
11 7/8
30.2
8 5/8
21.9
6 1/4
15.9
8 5/8
21.9
1 1/4
3.2
1/2
1.3
6 1/4
15.9
3/4
1.9
109
49
.242
6.9
88
1,217
177
2,447
265
3,664
354
4,894
442
6,111
15005
12.7
16 3/8
41.6
10 1/2
26.7
7 7/16
18.9
10 1/2
26.7
1 1/4
3.2
3/4
1.9
7 7/16
18.9
1
2.5
253
115
.526
14.9
197
2,724
394
4,065
592
5,420
789
10,909
986
13,632
17007
17.8
19 3/4
50.2
13 1/2
34.3
8 1/2
21.6
16
40.6
1 1/2
3.8
1
2.5
13
33.0
1 1/4
3.2
550
249
1.078
30.5
356
4,922
712
9,844
1,069
14,780
1,425
19,702
1,781
24,624
19009
22.9
19 3/4
50.2
15 1/2
39.4
8 1/2
21.6
16
40.6
1 1/2
3.8
1 1/4
3.2
13
33.0
1 1/2
3.8
700
318
1.658
47.0
568
7,853
1,136
1,571
1,704
23,560
2,277
31,482
2,840
39,266
 
SI Sizing Chart
 
A*B*Model Req'd# Req'dMounting Location
1 - 21 - 2112511
1 - 23 - 5112521
1 - 51 - 5120011
1 - 56 - 10120022
6 - 106 - 10130011
6 - 1011 - 15130022
11 - 1511 - 15135011
11 - 1516 - 20135022
16 - 2016 - 20135022
16 - 2010 - 25140011
21 - 2510 - 25140022
26 - 3510 - 25150011
36 - 5010 - 25150022
 
Hammer Formula
 
A x B x C = ft. lb.
 
The use of the hammer formula actually requires the use of a hammer or sledge hammer to impart shock to the surface that is to receive the impact. The tests should be conducted under conditions as close to the actual conditions as possible.
 
A = distance hammer travels (1 ft. minimum; 3 ft. maximum)
B = weight of hammer (recommended weight. = 1 to 8 lb. depending on the mass to receive the shock)
C = arm power [light = 3, medium = 6, heavy = 9] (multipliers by which arm power adds to the velocity at which the hammer head travels that is greater than gravity alone)
 
FORMULAAXBXC=FT. LB.
DescriptionDistance
in Feet
XHammer
Weight
XArm
Power
=FT. LB.
Example3 ft.X8 lb.X6
(medium)
=144 FT. LB.
 
Had the above example been an actual test and the 144 ft. lb. energy been sufficient to satisfy the requirement, the next step would then be to refer to the technical data section. Using the 60 PSI ratings, select the impactor that comes closest to your test data.
 
In the case of the example above, the Model SI 1350 would be best suited.
 
Note: The 60 PSI ratings will normally allow for sufficient plus or minus power required for the actual use of the impactor.