“4Matic” pneumatic actuators are 100% stainless steel actuators with the strong point of the fourth generation rack & pinion pneumatic actuators. Based on latest CNC machining centers & mechanical manufacturing technology, and nearly 20 years know-how of the rack & pinion technology, this actuators we manufactured is a high grade product with the characteristics of reliability, high performance, long cycle life and already proved to be used in most corrosive chemicals as well as very harsh industrial atmospheres.

Wide scope of output torque. Totally, we have 10 different size (specifications) actuators for choice. The output torque range is from 15Nm to 3815Nm at 5 Bar. The AA-300 stainless steel actuator with 3815 Nm is biggest one in the World now.

A perfect corrosion resistant actuator. All the vital components of AA series actuators and its accessories are manufactured from stainless steel. Investment casting stainless steel is used to make the body and end-caps. The CF8 (304) and CF8M (316) are the options for selection. The pinion and fastening are provided in 304 or 316 as per any specific demand. A vast experience of around more than 20 years in application has shown that this type of stainless steel pneumatic product is inducive to provide utmost resistance to nearly all corrosive chemicals, likeacid, alkali and corrosive industry environments, e.g., offshore, oil and gas platform, pharmaceutical, food industries etc.

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Smooth operation and long life operation. High level manufacturing technology for the rack & pinion in our workshop allows this actuator not only to cycle more than 1 million times free from failure but alos to offer exceptionally smooth actuation due to the low friction generated during rotral operations.

Flexible adjustment in travel ends. The two independent external travel stop bolts allow ±5°adjustment at 0°and 90° of the quarter travel.

Design and Feature:

Namur and ISO5211 Mount. AA series Stainless Steel Pneumatic Actuators are designed to incorporate Namur mounting for solenoids, limit switches and positioners and offer a ISO5211 combination mounting pads that allow you to mount directly to quarter turn valves.

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Single acting with high performance springs. Preloaded coating springs are made from the high quality material for resistant to corrosion and longer cycle life, which can be demounted safely and conveniently to satisfy different requirements of torque by changing quantity of springs.

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Operating Principle:

Double Acting (R-closed):

By supplying air to Port B, pressure is applied to the outside chamber and drives the dual pistons inward. The action causes the pinion to turn clockwise while the air is being exhausted from Port A.

By supplying air to Port A, pressure is applied to the center chamber and forces the dual pistons outward. Linear piston force is transferred via gear racks to the pinion gear, causing the pinion to turn counterclockwise while the air is being exhausted from Port B.

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Spring Return (R-closed, fail closed):

Upon loss of air pressure, the stored energy in the compressed springs forces the pistons inwards producing rotary motion with exhaust air exiting at Port A. This “fail safe” position is held by spring force until air pressure reapplied to Port A.

By supplying air to Port A, pressure is applied to the center chamber, forcing the dual pistons outward, compressing the springs in the outside chambers to produce a counterclockwise rotation. Exhaust air exits at Port B.

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Ordering Guide

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Stroke Adjustment

Stroke Adjustment: Pinion stops allow ±5° adjustment at 0° and 90°.

Spring Return Actuators Output Torque (in.lbs):

Output Air to Spring Spring Return Output
Air Pressure (Psi) 30 45 60 75 90 105 120
 

Model

Spring No. 90˚ 90˚ 90˚ 90˚ 90˚ 90˚ 90˚ 90˚
Start Start Start End Start End Start End Start End Start End Start End End Start
AA -105SR 4 374 244 671 547 979 850 224 349
5 618 457 921 760 280 435
6 559 366 862 670 1165 972 336 523
7 503 277 805 580 1108 883 392 610
8 444 187 747 490 1050 792 1352 1095 1655 1398 448 696
9 689 400 992 703 1295 1005 1598 1308 504 784
10 631 306 934 609 1237 912 1540 1214 1842 1517 560 871
11 876 522 1178 825 1481 1127 1783 1430 616 958
12 818 435 1122 738 1424 1040 1727 1343 672 1045
AA-125SR 4 540 339 998 797 1456 1254 372 558
5 897 659 1355 1117 460 699
6 806 513 1263 980 1721 1437 558 832
7 705 366 1163 824 1630 1291 646 974
8 613 229 1071 687 1529 1144 1987 1611 2454 2069 743 1106
9 980 540 1437 998 1895 1456 2353 1923 832 1248
10 879 403 1337 861 1794 1318 2261 1776 2719 2243 929 1389
11 1245 714 1703 1172 2161 1630 2618 2087 1018 1531
12 1144 577 1611 1035 2069 1492 2527 1950 1106 1664
AA-140SR 4 934 623 1721 1401 2499 2188 611 912
5 1566 1163 2344 1950 761 1142
6 1410 934 2188 1712 2975 2499 912 1372
7 1254 696 2032 1483 2820 2261 1062 1602
8 1099 458 1877 1245 2664 2023 3442 2811 4230 3589 1212 1823
9 1712 1007 2499 1794 3278 2573 4065 3360 1372 2053
10 1556 769 2344 1547 3122 2335 3909 3113 4687 3900 1522 2283
11 2179 1309 2966 2097 3744 2875 4532 3662 1673 2513
12 2023 1080 2811 1859 3589 2646 4376 3424 1823 2744
AA-160SR 4 1410 916 2545 2133 3845 3351 991 1469
5 2371 1749 3589 2966 1239 1841
6 2124 1364 3342 2582 4559 3799 1487 2213
7 1859 64 3076 2197 4294 3415 1735 2584
8 1611 604 2829 1822 4047 3040 5264 4257 6482 5475 1974 2947
9 2563 1437 3781 2655 4999 3873 6216 5090 2221 3319
10 2316 1053 3534 2270 4752 3488 5969 4706 7187 5923 2469 3690
11 3278 1895 4495 3113 5713 4330 6930 5548 2717 4053
12 3021 1511 4239 2728 5456 3946 6674 5164 2965 4425
AA-210SR 4 2856 2087 5292 4523 7727 6958 1947 2690
5 4788 3827 7223 6262 2434 3363
6 4285 3131 6720 5566 9155 8002 2921 4036
7 3781 2435 6216 4871 8652 7306 3407 4708
8 3278 1739 5713 4175 8148 6610 10583 9045 13019 11481 3894 5381
9 5209 3479 7645 5914 10080 8350 12515 10785 4381 6053
10 4706 2783 7141 5218 9576 7654 12012 10089 14447 12524 4868 6726
11 6638 4523 9073 6958 11508 9393 13943 11828 5354 7399
12 6134 3827 8569 6262 11005 8697 13440 11133 5841 8071
AA-300SR 4 8624 5594 5168 7514
5 6461 9390
6 12048 8011 7753 11266
7 10556 5850 17541 12836 9045 13142
8 9073 3690 16058 10675 23044 17660 10337 15018
9 14575 8514 21560 15500 28546 22485 11629 16895
10 13092 6363 20077 13348 27063 20334 34048 27319 41033 34304 12921 18780
11 18585 11188 25570 18173 32556 25158 39541 32144 14213 20656
12 17102 9027 24087 16012 31073 22998 38058 29983 15505 22532
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