Table 4. Air Volumes and Consumption
Actuator volumes:
Consumption per stoke
(in liters, pressure in barg)
Actuator
size
Maximum volume (in liters) Outward Stroke Inward Stroke
Central
1
chamber
End cap
2
chamber
Displaced
3
volume
Double-Acting
and Spring-Return
Double-Acting only
2.0 barg 4.0 barg 8.0 barg 2.0 barg 4.0 barg 8.0 barg
12
0.05 0.06 0.04 0.14 0.24 0.44 0.16 0.28 0.52
25 0.11 0.19 0.08 0.36 0.64 1.2 0.48 0.88 1.7
40
0.16 0.36 0.15 0.67 1.2 2.2 0.89 1.6 3.1
65 0.36 0.55 0.22 1.02 1.8 3.4 1.3 2.4 4.7
100 0.4 0.8 0.3 1.5 2.7 5.0 2.0 3.8 7.2
150
0.8 0.7 0.5 2.4 4.3 8.1 2.1 3.6 6.7
200
0.8 1.0 0.7 3.2 5.7 11 2.8 4.9 9.1
350 1.9 1.7 1.2 5.5 9.8 18 5.0 8.8 16
600 3.6 3.3 2.1 9.4 17 31 8.7 15 28
950 5.1 4.3 3.2 13 24 44 12 20 37
1600 7.8 7.0 5.2 21 37 68 19 33 62
2500
10.4 11.1 8.2 29 50 92 30 53 97
4000 18.4 18.9 14.0 51 88 161 52 89 165
Actuator volumes:
Consumption per stoke
(in Cu.in., pressure in psig)
Actuator
size
Maximum volume (Cu.in.) Outward Stroke Inward Stroke
Central
1
chamber
End cap
2
chamber
Displaced
3
volume
Double-Acting
and Spring-Return
Double-Acting only
40 psig 80 psig 120 psig 40 psig 80 psig 120 psig
12 3.1 3.7 2.5 11 19 28 13 23 33
25 6.4 11.8 4.7 28 52 75 38 72 106
40 10.0 22 8.9 53 96 140 71 133 196
65 22 34 13.5 81 148 215 107 200 294
100 22 50 19.9 118 216 314 165 310 455
150 48 43 32 192 352 512 163 293 424
200 50 59 44 255 466 676 220 397 573
350 118 103 76 436 796 1157 392 709 1025
600 222 201 129 742 1354 1967 683 1237 1790
950 310 260 193 1049 1905 2760 910 1628 2346
1600 477 430 319 1635 2951 4267 1505 2691 3877
2500 638 676 501 2259 4018 5776 2367 4232 6097
4000 1122 1151 853 3946 7040 10134 4027 7202 10377
1. For Double-Acting and Spring-Return. Pistons at 90° outward position.
2. Only for Double-Acting. Pistons at 0° inward position.
3. Stroke is 90°.
Figure 2 Actuator air volumes
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