SG Transmission > Technical Information > Selection Data for Clutch & Brake Combinations
.gif) |
t = Response time ts = Delay time td = Decay time |
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Type
|
00
|
01
|
02
|
03
|
04
|
05
|
06
|
07
|
08
|
10
|
11
|
12
|
13
|
16
|
20
|
|
|
Clutch
|
t
|
10
|
11
|
12
|
16
|
25
|
30
|
45
|
45
|
74
|
85
|
90
|
95
|
100
|
160
|
200
|
|
ts
|
3
|
4
|
5
|
8
|
9
|
10
|
12
|
12
|
18
|
22
|
23
|
25
|
30
|
35
|
40
|
|
|
td
|
3
|
4
|
5
|
10
|
11
|
12
|
15
|
15
|
20
|
40
|
40
|
65
|
65
|
100
|
130
|
|
|
Brake
|
t
|
5
|
10
|
11
|
12
|
15
|
18
|
28
|
30
|
40
|
50
|
55
|
60
|
65
|
90
|
130
|
|
ts
|
3
|
4
|
4
|
5
|
7
|
7
|
8
|
8
|
10
|
12
|
16
|
15
|
17
|
20
|
25
|
|
|
td
|
4
|
5
|
6
|
7
|
8
|
10
|
20
|
20
|
30
|
50
|
50
|
85
|
90
|
110
|
140
|
|
|
Average switching times, in milliseconds, with nominal air-gap
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Clutch or Brake size Selection
| Ts = Required / Motor torque |
(Nm)
|
1.)
|
If the power to be transmitted is known then use formula (1). |
| Ta = Acceleration Torque |
(Nm)
|
2.)
|
If the inertia of the system is known use formula (2) to determine the size of clutch or brake required. |
| N = Speed |
(min-1)
|
|
|
| J = Moment of Inertia |
(kgm2)
|
3.)
|
Check using formula (3) that the size of the clutch or brake indicated by (1) or (2) has an adequate thermal rating. (see technical data sheet). |
| ta = Acceleration Time |
(s)
|
|
|
| P = Motor Power |
(kW)
|
|
|
| R = Thermal Rating |
(W)
|
4.)
|
The above is a general guide to clutch or brake selection. However, a much more accurate assessment of your application can be made if you send full details of your design to our technical department. |
| F = Operations / min |
|
|
|
| (1) Ts = 9500 x P x 2 N |
(Nm)
|
|
|
| (2) Ta = JxN x2 9.55 (ta-t) |
(Nm)
|
|
|
| (3) R = J x N x F 11000 |
(Nm)
|
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Design Selection Chart
| Example, right, shows an 07 module mounted between a motor with a B14 flange (solid shaft) and spur reducer to take a B5 flange (hollow shaft). In this case the reducer output is controlled by the clutch and brake in the module. These modular clutch brake units are used to couple between input and output devices which have I.E.C. standard flanges or pulleys. To select the unit you require, use the chart to cross-reference between your input and output configurations. |
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Image & Downloads
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Having trouble selecting the right brakes and clutches, try our product selection guide.