Pneumatic Actuator Scotch Yoke Type (AS Series)

AUTOMA – Pneumatic Actuator Scotch Yoke Type (AS Series)

The AUTOMA Pneumatic Actuator Scotch Yoke Type (AS Series) is engineered to deliver maximum torque output, exceptional durability, and precise control for quarter-turn valve automation. Specially designed for demanding industrial applications, the AS Series provides unparalleled performance for ball valves, plug valves, and butterfly valves in oil & gas, petrochemical, water treatment, and power generation sectors.

If you’re searching for a high-efficiency pneumatic actuator with superior torque characteristics, the AUTOMA AS Series is your ultimate solution.

  • AS40
  • AS50
  • AS65
  • AS80
  • AS100
  • AS125
  • AS140
  • AS160
  • AS185
  • AS200
  • AS250
  • AS300
  • Scotch – Yoke type
  • No metal to metal touch
  • ISO 5211, DIN 3337
  • Anodized surface & double coated interior
Item AS40 AS50 AS65 AS80 AS100 AS125 AS140 AS160 AS185 AS200 AS250 AS300
Operating Type R & P Scotch – Yoke
Operating Media Compressed Dry Air
Operating Pressure 4.5 ~ 7kg/cm2
Rotating Angle 90° +5°/-10°
Operating Temperature -20°C ~ 80°C(Option : -40°C ~ 200°C)
Weight(kg) 0.6 1.6 3 5.3 9.5 17.6 23.9 36.6 62.6 77.2 119.6 145

AUTOMA Pneumatic Actuator Scotch Yoke Type (AS Series)

No. Part Name Materials No. Part Name Materials
1 Body Aluminum Alloy 15 Piston Guide-ring Engineering Plastic
2 Shaft Steel Alloy(Nickel Plated) 16 Piston Pin Steel Alloy
3 Crank Steel Alloy 17 Piston Roller Steel Alloy
4 Bushing(Top) Engineering Plastic 18 Piston Pad Engineering Plastic
5 Body O-ring(Top) NBR 19 Cover Aluminum Alloy
6 Shaft Roller(Top) Engineering Plastic 20 Cover O-ring NBR
7 Bushing(Bottom) Engineering Plastic 21 Cover Bolt Steel Alloy
8 Body O-ring(Bottom) NBR 22 Spring Cap Engineering Plastic
9 Shaft Roller(Bottom) Engineering Plastic 23 Spring Steel Alloy
10 Body Washer(Bottom) Engineering Plastic 24 Stopper Steel Alloy
11 Body Washer(Top) Stainless Steel 25 Adjust Washer Stainless Steel
12 Body Snap-ring Stainless Steel 26 Adjust O-ring NBR
13 Piston Aluminum Alloy 27 Adjust Nut Stainless Steel
14 Piston O-ring NBR 28 Adjust Bolt Steel Alloy
Model Angle Supply Media
Spring Torque : Middle Spring Torque : Strong
Spring to Close Air to Open : 4.5bar Spring to Close Air to Open : 6bar
AS40 1.8 5.8 4.2 6.4
45° 2.3 5.2 5.3 5.3
90° 2.8 4.7 6.4 4.2
AS50 14.0 26.0 17.0 34.0
45° 12.0 12.0 15.0 15.0
90° 26.0 14.0 34.0 17.0
AS65 35.0 54.0 48.0 70.0
45° 23.0 28.0 37.0 32.0
90° 54.0 35.0 70.0 48.0
AS80 60.0 100.0 80.0 130.0
45° 50.0 50.0 70.0 70.0
90° 100.0 60.0 130.0 80.0
AS100 100.0 190.0 130.0 240.0
45° 80.0 80.0 110.0 110.0
90° 190.0 100.0 240.0 130.0
AS125 243.0 403.0 358.0 520.0
45° 177.0 182.0 215.0 254.0
90° 395.0 210.0 441.0 341.0
AS140 371.0 576.0 480.0 726.0
45° 236.0 265.0 330.0 360.0
90° 447.0 366.0 680.0 430.0
AS160 550.0 750.0 769.9 1149.9
45° 420.0 420.0 560.0 560.0
90° 750.0 550.0 1149.9 769.9
AS185 882.3 1203.1 1235.2 1844.8
45° 645.7 645.7 860.9 860.9
90° 1102.9 808.8 1691.1 1132.3
AS200 1250.0 1510.0 1750.0 2160.0
45° 740.0 780.0 1040.0 1130.0
90° 1500.0 920.0 2140.0 1370.0
AS250 2120.0 2760.0 3060.0 3660.0
45° 1320.0 1370.0 1830.0 1900.0
90° 2470.0 2200.0 3550.0 2760.0
AS300 4308.0 6421.0 5740.0 8566.0
45° 2172.0 2283.0 2894.0 3046.0
90° 4396.0 3266.0 5857.0 4359.0

AUTOMA Pneumatic Actuator Scotch Yoke Type (AS Series)

AUTOMA Pneumatic Actuator Scotch Yoke Type (AS Series)

Model PT
AS40 PT 1/8
AS50 ~ AS200 PT 1/4
AS250 ~ (Choice) PT 1/4, 3/8, 1/2
Model K1 K2
AS40 50 25
AS50 ~ AS160 80 30
AS185 ~ 130 30
Model ISO ØP.C.D N-G K L T T1 H H1 CH(Sta) CH(Opt) DP
AS40 F03/F05 36/50 4-M5/M6 9 97 63 32 75 55 9×9 9
AS50 F03/F05/F07 36/50/70 4-M5/M6/M8 9 257 75 40 90 70 11×11 14×14 13
9.7xØ15 14
AS65 F05/F07 50/70 4-M6/M8 13 314 89 46 107 87 14×14 11.7xØ17 17
9.7xØ15 14
AS80 F07 70 4-M8 13 421 101 49.5 126 106 17×17 14.7xØ19 19
AS100 F07/F10 70/102 4-M8/M10 19 500 129 61.5 148 128 22×22 17.7xØ22 26
AS125 F07/F10 70/102 4-M8/M10 19 606 151 71.5 174 154 22×22 26
AS140 F10/F12 102/125 4-M10/M12 24 682 164 77 192 172 27×27 22×22 30
AS160 F14 140 4-M16 24 781 188 89 216 196 36×36 27×27 30
AS185 F14 140 4-M16 30 894 217 103 254 224 36×36 30
AS200 F16 165 4-M20 36 982 231 115 284 254 46×46 36×36 50
AS250 F16 165 4-M20 36 1108 301 152 335 305 46×46 60
AS300 F16/F25 165/254 4-M20/8-M16 36 1344 360 170 408 378 55×55 60

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