Vielastic

The “Vielastic” couplings

1. The “Vielastic” couplings are designed to generate turning moments and mechanical gears powered by electric engines. The turning moment is generated by an elastic element, a rubber rim 3 (diagram 1) pressed by metal disks 2 to the half couplings1 and the rim is diametrically cut at a certain place and through this it can be assembled without offsetting the half couplings.
1). The “Vielastic” couplings have air-cushion, compensation and strength qualities. The mechanisms, which they are part of increase the inter repair period because the dynamical pressures are decreased. When the nominal turning moment is generated the torsion angle is 6o and at short term maximum pressure, which is three times higher than the nominal turning moment, the torsion angle is about 15o. When such couplings are used it is not necessary the geometrical axes of the leading and lead shaft to be precisely set. This relieves the execution of the assembly works a lot.

At hard regime of pressure the elastic element lasts more than 4 years while the metal parts have unlimited period of endurance.
2). The dimensional and joining sizes of the “VIELASTIC” couplings are specified in the attached diagram and tables.

2. Dimensional and joining sizes

Sign
Dimensions in mm
D [mm]
D1 [mm]
d [mm]
d1H7
min-max [mm]
d'1H7 [mm]
L [mm]
l [mm]
c [mm]
100- 1
100
48
33
11 ÷ 23
16 ÷ 22
66
28
20
135 - 3
135
69
48
14 ÷ 33
22 ÷ 28
80
35
22
175 - 7
175
90
64
19 ÷ 39
28 ÷ 35
112
45
38
210 - 15
210
110
80
25 ÷ 51
35 ÷ 42
132
55
38
260 - 30
230
144
95
29 ÷ 61
42 ÷ 55
156
65
44
310 - 60
310
164
125
37 ÷ 81
50 ÷ 55
171
75
41
370 - 120
370
232
150
37 ÷ 92
55
196
85
46
400 - 240
400
260
160
37 ÷ 102
60
220
95
50
450 - 400
450
260
160
54 ÷ 112
75
265
110
71
550 - 700
550
280
180
69 ÷ 132
80
336
130
120

 

Sign
Rotation moment
Max. rotation frequency
Twine angle
power of max. turnovers
Admissible exchange
Nominal.
Max.
Angle crossing of axises
Radial displacement
of axises
Axis displacement
Y
Jet moment
Z
Jet power
Inner Х
Jet power
Nm
Nm
min -1
gard.
N
gard.
Nm
mm.
N
mm
N
1
2
3
4
5
6
7
8
9
10*
11
12
13**
1
100- 1
10
30
3500
7
-
1
8
0.4
72
1.3
58
2
135 - 3
30
90
3500
7
-
1
8.5
0.6
108
1.5
75
3
175 -7
70
210
3000
6
-
3
8.5
1.3
234
2.5
200
4
210 - 15
150
400
2500
9
1000
3
12
1.5
675
2.5
250
5
260 - 30
300
900
2000
8
1000
4.5
14
2.5
1370
3.5
350
6
310 -60
600
1800
2000
7
1700
4.5
25
2.5
1750
3.5
700
7
370 - 120
1200
3600
1600
7
1800
6.5
180
3.0
4800
5.0
1500
8
400 - 240
2400
7200
1600
7
2500
6.5
170
2.5
4000
4.5
2020
9
450-400
4000
12 000
1300
10
3500
9
160
4.5
4500
6.0
3600
10
550-700
7000
21 000
1100
11.5
6500
10
160
5.0
5000
7.0
5600

*The radial dislocations Z depend on the revolutions. The dislocation Z for consecutive number for coupling No 1 to No 6 is valid at 1450 min -1. For No 7 and No 8 at 950 min -1 , for No 9 and No 10 at 640 min -1.

When the revolutions are increased the quantity is divided by the multiplier of the revolutions.
** The quantities, specified in table 13, concern the allowed axis dislocation specified in table 12. Through interpolation the quantities at smaller axis dislocations could be found.

!. These are the most important parameters when ordering these types of couplings:
(1) diameter of the hole of the first disk (d1): 11....132 mm;
(2) diameter of the hole of the second disk (d’1): 16...80 mm:;
(3) dimensional diameter for the elastic element (D), chosen for the required nominal moment: 100..550 mm.

!. The exemplary symbol of a coupling having a required nominal turning moment MH=150 Nm and the diameter of the hole of the first disk less than 25 mm, and of the second one – 38 mm is as follows:
“Vielastic”- 210-15
5) Despite the great compensation qualities of the couplings it is desirable that the assembly should be accurate. That way the exploitation term of the elastic element is prolonged.


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