GT Range Single- And Double-Acting Pneumatic Piston Actuators
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GT Range
Rack & Pinion Actuators 
for Rotary Valve Control
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Rotork Actuators – Quality Controlled
Since the company was founded in 1957, Rotork 
has become the standard for excellence in the 
field of valve and damper automation for the 
oil, gas, power, water and waste treatment 
industries around the world.
As established leaders in actuation technology, we owe our 
success to a commitment to quality at every stage, and at 
every level, of Rotork's operations.
At the heart of the company is an exceptional workforce – 
the highly trained, forward thinking engineers, technicians, 
and sales support staff who each play a crucial role in 
maintaining Rotork's unrivalled reputation for innovation, 
reliability and first class after sale support.
With several fluid power product factories and additional 
Centres of Excellence located around the globe, we are able 
to offer creative solutions and design systems for virtually 
any application – from subsea hydraulics to the most 
sophisticated yet simple fluid power control system.
Contact Rotork for your operational or safety application 
requirements. We will work with you from conception, 
to design, to manufacture, to installation, and finally to 
maintenance and service support.
GT Range Rack & Pinion Actuators
The GT range of pneumatic rack & pinion actuators has 
been proven by a 30-year history of service in hundreds of 
thousands of installations encompassing a variety of diverse 
applications. There are a wide range of body sizes available 
in both double-acting and spring-return configurations. Units 
can be easily changed from one to the other – even in the 
field. In addition to the usual 90 degree rotation, 120, 180, 
and 240 rotations are also available. All models incorporate 
an anti-blowout design.
Many options are available to optimise the actuator for 
particular applications. Options include high- and low-
temperature versions, anti-corrosion materials and treatments, 
valve mounting kits, and declutchable manual gear overrides.
We can also supply actuator control and indication 
components for virtually any functional requirement and 
installation environment. Accessory mounting conforms to 
NAMUR specifications and valve mounting dimensions are 
per ISO 5211 standards.
Rotork can provide a variety of additional services including 
application engineering, installation and retrofit, as well as 
maintenance and repair by factory-trained service personnel.
With superior design, material specification, manufacturing 
precision, and an industry-best global sales and service 
support network, Rotork GT range actuators are the wisest 
choice for any rack & pinion valve actuation requirement.
2 GT Range
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Fitting Accessories
The Right Accessory Solutions  
Valves and actuators only perform as well as the solution is In addition to the valve actuator itself, Rotork manufactures 
engineered. With decades of experience engineering fluid a wide range of precision flow control and accessory 
power valve automation for a multitude of applications and products as well as a variety of gearboxes and override 
markets, you can depend on Rotork to provide a reliable and options. We have designs to withstand the challenges of 
safe automation solution to meet your requirements. any valve operating environment.
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Inside The GT Actuator
Every Rotork actuator is built to provide long 
and efficient service with minimum maintenance. 
The design, engineering and materials used in 
their construction ensure optimum performance 
even in the harshest of environments.
Supply  Filtered air ISO 8573-1:2010
Optional: Others on request
Operating Pressure  2 to 10 bar  (29 to 145 psi) 3
6
Torque Output  2.4 to 15,300 Nm  (21 to 135,400 lbf.in) 5
7
Temperature Ranges 2
Standard:  -50 to +70 ºC (-58 to +158 ºF) 
 NBR o-ring, Delrin guide 19
Optional:  -15 to +160 ºC (+5 to +320 ºF) 
 Viton o-ring, IXEF guide
Optional:  -60 to +200 ºC (-76 to +392 ºF) 
 Silicone o-ring, PTFE guide
Mounting Standards
Air supply:  VDI/VDE 3845, NAMUR
9
 EN ISO 228 G 1/8" 
 (sizes from 33 to 92) 8
10
 EN ISO 228 G 1/4" 
 (sizes from 110 to 302) 11
Accessories:  VDI/ VDE 3845, NAMUR
Valve interface:  ISO 5211
Valve shaft interface:  ISO 5211 double square
  Other interface options available,  4
see page 9. 20
Rotation  90°
Optional:  120°, 180°, 240°, or custom angles
Stroke Adjustment  -5° to +5° from 90° position 
 Single- or dual-direction travel stops  
 acting upon the piston(s)1
Optional:  E xtended travel adjustment on the 
opening stroke is available with 
installation of a longer stop screw Optional Surface Treatments
• Anodised body, blue epoxy-painted end caps (RAL 5015)
Materials
Body:  Anodised aluminium ASTM 6063 • Hard anodised body, blue epoxy-painted end caps (RAL 5015)
Optional:  Stainless steel AISI 316 (limited sizes)  • Hard anodised body, black epoxy-painted end caps (RAL 9005)
 or epoxy paint • Hard anodised body, end caps, and pistons
Pinion:   Carbon steel EN 111SMnPb3 • Duraflon PTFE over anodised or hard-anodised body
electroless nickel plated • Polyester powder coat over anodised body
Optional:  Stainless steel AISI 316 • FDA compliant epoxy polyester paint over anodised body
Pistons:  Die-cast aluminium UNI EN1706 • Polyurethane Resin ISO 12944-6 over anodised body
End caps:  D ie-cast aluminium UNI EN1706,  • Plastcoat PPA571 ISO 12944-6 body and end caps
EN AC- 46100, epoxy paint  
(black RAL 9005) Contact Rotork with other requirements.
Spring cartridge:  Carbon steel, epoxy paint
4 GT Range
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Inside The GT Actuator
2 9
7 19 10 11
5
4
3
22 1
12
13
8
20
6    Approvals and Industry Standards
3
• Actuators certified in accordance with 2014/34/EU
• Complies with EN 60529 (1991) + (A1:2000) for IP66M
14 • EAC certificates of conformity 
15 • Management system in accordance with ISO 9001:2015
21 • Certified suitable for use at SIL3 as a single device in 
accordance with IEC 61508
Item Description Material Quantity
1 Actuator body Anodised aluminium EN AW6063 1
2 Body end cap Die-cast aluminium EN AC-46100 2
16 3 Piston Die-cast aluminium EN AC-46100 2
4 Piston o-ring Buna N nitrile rubber 2
5 Piston guide ring Acetalic resin (Delrin) 2
6 Piston guide block Acetalic resin (Delrin) 2
7 End cap o-ring Buna N nitrile rubber 2
8 External stop screw Stainless steel AISI 304 2
9 External stop screw o-ring Buna N nitrile rubber 2
17 10 External stop screw washer Stainless steel AISI 304 2
11 External stop nut Stainless steel AISI 304 2
18 12 Pinion retaining ring Stainless steel UNI 7435 1
13 Pinion upper bearing Acetalic resin (Delrin) 1
14 Pinion upper o-ring Buna N nitrile rubber 1
15 Pinion upper guide bearing Acetalic resin (Delrin) 1
16 Pinion Carbon steel EN 11SMnPb3 (electroless nickel plated) 1
17 Pinion lower guide bearing Acetalic resin (Delrin) 1
18 Pinion lower o-ring Buna N nitrile rubber 1
19 End cap retaining screws Stainless steel AISI 304 8
20 Spring cartridge Steel (epoxy painted) 0-12
21 Anti-blowout ring Polyarylamide 1
22 Position indicator Nylon 6 1
1. GT range actuators are available with either single- or dual-direction of travel stop adjustment, except on the smallest sizes, 33, 34, 
43, and 44 which are adjustable only at the outboard end of piston travel. Outboard stop adjustment is +/- 5° (e.g. 85° - 95°). Inboard 
stop adjustment is +5°/-25°.
The illustration and parts list above depict an actuator with single-direction travel stop adjustment, standard temperature build.
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Torque Output Data
Double-Acting Actuators
Pneumatic Torque (Nm)
Model
2 bar 2.5 bar 3 bar 3.5 bar 4 bar 4.5 bar 5 bar 5.6 bar 6 bar 6.5 bar 7 bar 8 bar 9 bar 10 bar
33, 34 2.4 2.9 3.5 4.1 4.7 5.2 5.8 6.5 7.0 7.6 8.2 9.4 10.5 11.7
43, 44 4.7 5.8 7.0 8.2 9.4 10.5 11.7 13.1 14.0 15.2 16.4 18.7 21.0 23.4
52 7.8 9.7 11.7 13.6 15.6 17.5 19.5 21.8 23.4 25.3 27.3 31.2 35.1 39.0
63 11.6 14.5 17.4 20.3 23.2 26.1 29.0 32.5 34.8 37.7 40.6 46.4 52.2 58.0
75 20.0 25.0 30.0 35.0 40.0 45.0 50.0 56.0 60.0 65.0 70.0 80.0 90.0 100.0
83 29.0 36.2 43.5 50.7 58.0 65.2 72.5 81.2 87.0 94.2 101.5 116.0 130.5 145.0
92 40.0 50.0 60.0 70.0 80.0 90.0 100.0 112.0 120.0 130.0 140.0 160.0 180.0 200.0
110 58.0 72.5 87.0 101.5 116.0 130.5 145.0 162.4 174.0 188.5 203.0 232.0 261.0 290.0
118 86.0 107.5 129.0 150.5 172.0 193.5 215.0 240.8 258.0 279.5 301.0 344.0 387.0 430.0
127 116.0 145.0 174.0 203.0 232.0 261.0 290.0 324.8 348.0 377.0 406.0 464.0 522.0 580.0
143 186.0 232.5 279.0 325.5 372.0 418.5 465.0 520.8 558.0 604.5 651.0 744.0 837.0 930.0
160 230.0 287.5 345.0 402.5 460.0 517.5 575.0 644.0 690.0 747.5 805.0 920.0 1,035 1,150
190 400.0 500.0 600.0 700.0 800.0 900.0 1,000 1,120 1,200 1,300 1,400 1,600 1,800 2,000
210 480.0 600.0 720.0 840.0 959.9 1,080 1,200 1,344 1,440 1,560 1,680 1,920 2,160 2,400
253 690.5 863.1 1,035 1,208 1,381 1,553 1,726 1,933 2,071 2,244 2,416 2,762 3,107 3,452
254 920.0 1,150 1,380 1,610 1,840 2,070 2,300 2,576 2,760 2,990 3,220 3,680 4,140 4,600
255 1,160 1,450 1,740 2,030 2,320 2,610 2,900 3,248 3,480 3,770 4,060 4,640 5,220 5,800
300, 300-F25 1,600 2,000 2,400 2,800 3,200 3,600 4,000 4,480 4,800 5,200 5,600 6,400 7,200 8,000
302, 302-F25 3,060 3,825 4,590 5,355 6,120 6,885 7,650 8,568 9,180 9,945 10,710 12,240 13,770 15,300
 
Single-Acting Actuators
Spring Pneumatic Torque (Nm)
Torque (Nm) 2 bar 3 bar 4 bar 5 bar 5.6 bar 6 bar 7 bar 8 bar 9 bar 10 bar
0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90°
2 1.68 2.53 2.97 2.09 5.31 4.43 7.64 6.77 9.98 9.11 11.39 10.51 12.32 11.45 14.66 13.79 17.00 16.12 19.34 18.46 21.68 20.80
4 3.36 5.07 - - 3.59 1.85 5.93 4.18 8.27 6.52 9.68 7.93 10.61 8.86 12.95 11.20 15.29 13.54 17.63 15.88 19.97 18.22
6 5.03 7.60 - - - - 4.22 1.60 6.56 3.94 7.96 5.34 8.90 6.28 11.24 8.61 13.58 10.95 15.92 13.29 18.26 15.63
8 6.71 10.14 - - - - - - 4.85 1.35 6.25 2.75 7.19 3.69 9.53 6.03 11.87 8.37 14.21 10.71 16.54 13.05
2 1.91 3.19 5.84 4.54 9.74 8.44 13.64 12.34 17.54 16.23 19.87- 18.57 21.43 20.13 25.33 24.03 29.23 27.92 33.12 31.82 37.02 35.72
4 3.82 6.37 3.90 1.29 7.79 5.19 11.69 9.09 15.59 12.98 17.92 15.32 19.48 16.88 23.38 20.78 28.28 24.67 31.17 28.57 35.07 32.47
6 5.73 9.56 - - 5.84 1.94 9.74 5.83 13.64 9.73 15.98 12.07 17.53 13.63 21.43 17.52 25.33 21.42 29.23 25.32 33.12 29.22
8 7.64 12.75 - - - - 7.79 2.58 11.69 6.48 14.03 8.82 15.59 10.38 19.48 14.27 23.38 18.17 27.28 22.07 31.17 25.96
10 9.55 15.94 - - - - - - 9.74 3.23 12.08 5.57 13.64 7.13 17.53 11.02 21.43 14.92 25.33 18.82 29.22 22.71
12 11.46 19.12 - - - - - - - - 10.13 2.32 11.69 3.88 15.59 7.77 19.48 11.67 23.38 15.57 27.28 19.46
2 3.01 4.42 8.54 7.09 14.34 12.89 20.14 18.69 25.94 24.50 29.42 27.98 31.74 30.30 37.54 36.10 43.34 41.90 49.14 47.70 54.94 53.50
4 6.01 8.84 5.47 2.58 11.27 8.38 17.07 14.18 22.87 19.99 26.35 23.47 28.67 25.79 34.47 31.59 40.27 37.39 46.08 43.19 51.88 48.99
6 9.02 13.26 - - 8.20 3.87 14.00 9.68 19.81 15.48 23.29 18.96 25.61 21.28 31.41 27.08 37.21 32.88 43.01 38.68 48.81 44.48
8 12.03 17.68 - - - - 10.94 5.17 16.74 10.97 20.22 14.45 22.54 16.77 28.34 22.57 34.14 28.37 39.94 34.17 45.74 39.97
10 15.03 22.11 - - - - - - 13.67 6.46 17.15 9.94 19.47 12.26 25.27 18.06 31.08 23.86 36.88 29.66 42.68 35.46
12 18.04 26.53 - - - - - - - - 14.09 5.43 16.41 7.75 22.21 13.55 28.01 19.35 33.81 25.15 39.61 30.95
2 5.24 7.96 14.65 11.87 24.65 21.87 34.65 31.87 44.65 41.87 50.65 47.87 54.64 51.87 64.64 61.86 74.64 71.86 84.64 81.86 94.64 91.86
4 10.48 15.93 9.31 3.75 19.31 13.75 29.31 23.75 39.30 33.75 45.30 39.74 49.30 43.74 59.30 53.74 69.30 63.74 79.30 73.74 89.29 83.74
6 15.71 23.89 - - 13.96 5.63 23.96 15.63 33.96 25.62 39.96 31.62 43.96 35.62 53.96 45.62 63.95 55.62 73.95 65.62 83.95 75.61
8 20.95 31.85 - - - - 18.62 7.50 28.62 17.50 34.62 23.50 38.62 27.50 48.61 37.50 58.61 47.50 68.61 57.49 78.61 67.49
10 26.19 39.81 - - - - - - 23.27 9.38 29.27 15.38 33.27 19.38 43.27 29.38 53.27 39.37 63.27 49.37 73.26 59.37
12 31.43 47.78 - - - - - - 17.93 1.26 23.93 7.26 27.93 11.26 37.93 21.25 47.93 31.25 57.92 41.25 67.92 51.25
2 7.23 11.19 21.62 17.58 36.12 32.07 50.62 46.57 65.11 61.07 73.81 69.77 79.61 75.56 94.11 90.06 108.6 104.6 123.1 119.1 137.6 133.6
4 14.46 22.39 14.25 6.16 28.75 20.65 43.24 35.15 57.74 49.65 66.44 58.35 72.24 64.15 86.73 78.64 101.2 93.14 115.7 107.6 130.2 122.1
6 21.68 33.58 - - 21.37 9.24 35.87 23.73 50.37 38.23 59.07 46.93 64.86 52.73 79.36 67.23 93.86 81.72 108.4 96.22 122.9 110.7
8 28.91 44.78 - - - - 28.50 12.31 42.99 26.81 51.69 35.51 57.49 41.31 71.99 55.81 86.49 70.30 101.0 84.80 115.5 99.30
10 36.14 55.97 - - - - - - 35.62 15.39 44.32 24.09 50.12 29.89 64.62 44.39 79.11 58.89 93.61 73.36 108.1 87.88
12 43.37 67.17 - - - - - - 28.25 3.98 36.95 12.67 42.75 18.47 57.24 32.97 71.74 47.47 86.24 61.96 100.7 76.46
2 9.10 14.34 30.72 25.37 50.73 45.38 70.73 65.38 90.73 85.38 102.7 97.39 110.7 105.4 130.7 125.4 150.7 145.4 170.7 165.4 190.7 185.4
4 18.20 28.69 21.44 10.74 41.44 30.75 61.45 50.75 81.45 70.75 93.45 82.75 101.5 90.76 121.5 110.8 141.5 130.8 161.5 150.8 181.5 170.8
6 27.31 43.03 - - 32.16 16.12 52.16 36.12 72.16 56.12 84.17 68.12 92.17 76.12 112.2 96.13 132.2 116.1 152.2 136.1 172.2 156.1
8 36.41 57.38 - - - - 42.88 21.49 62.88 41.49 74.88 53.49 82.88 61.49 102.9 81.50 122.9 101.5 142.9 121.5 162.9 141.5
10 45.51 71.72 - - - - 33.59 6.86 53.60 26.86 65.60 38.86 73.60 46.86 93.60 66.86 113.6 86.87 133.6 106.9 153.6 126.9
12 54.61 86.07 - - - - - - 44.31 12.23 56.31 24.23 64.32 32.23 84.32 52.23 104.3 72.24 124.3 92.24 144.3 112.2
6 GT Range
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92 83 75 63 52 43, 44 Model
Springs
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Torque Output Data
Single-Acting Actuators continued
Spring Pneumatic Torque (Nm)
Torque (Nm) 2 bar 3 bar 4 bar 5 bar 5.6 bar 6 bar 7 bar 8 bar 9 bar 10 bar
0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90°
2 15.81 23.71 41.9 33.8 70.9 62.8 99.9 91.8 128.9 120.8 146.3 138.2 157.9 149.8 186.9 178.8 215.9 207.8 244.9 236.8 273.9 265.8
4 31.61 47.42 25.8 9.6 54.8 38.6 83.8 67.6 112.8 96.6 130.2 114.1 141.8 125.7 170.8 154.7 199.8 183.7 228.8 212.7 257.8 241.7
6 47.42 71.13 - - 38.6 14.5 67.6 43.5 96.6 72.5 114.1 89.9 125.7 101.5 154.7 130.5 183.7 159.5 212.7 188.5 241.7 217.5
8 63.22 94.84 - - - - 51.5 19.3 80.5 48.3 97.9 65.7 109.5 77.3 138.5 106.3 167.5 135.3 196.5 164.3 225.5 193.3
10 79.03 118.5 - - - - - - 64.4 24.1 81.8 41.5 93.4 53.1 122.4 82.1 151.4 111.1 180.4 140.1 209.4 169.1
12 94.84 142.3 - - - - - - - - 65.7 17.3 77.3 28.9 106.3 57.9 135.3 86.9 164.3 115.9 193.3 144.9
2 21.25 36.46 64.3 48.8 107.3 91.8 150.3 134.8 193.3 177.8 219.1 203.6 236.3 220.8 279.3 263.8 322.3 306.8 365.3 349.8 408.3 392.8
4 42.50 72.92 42.7 11.6 85.7 54.6 128.7 97.6 171.7 140.6 197.5 166.4 214.7 183.6 257.7 226.6 300.7 269.6 343.7 312.6 386.7 355.6
6 63.75 109.4 - - 64.0 17.4 107.0 60.4 150.0 103.4 175.8 129.2 193.0 146.4 236.0 189.4 279.0 232.4 322.0 275.4 365.0 318.4
8 84.99 145.8 - - - - 85.3 23.3 128.3 66.3 154.1 92.1 171.3 109.3 214.3 152.3 257.3 195.3 300.3 238.3 343.3 281.3
10 106.2 182.3 - - - - - - 106.6 29.1 132.4 54.9 149.6 72.1 192.6 115.1 235.6 158.1 278.6 201.1 321.6 244.1
12 127.5 218.7 - - - - - - - - 110.8 17.7 128.0 34.9 171.0 77.9 214.0 120.9 257.0 163.9 300.0 206.9
2 29.94 48.78 85.5 66.2 143.5 124.2 201.5 182.2 259.5 240.2 294.2 275.0 317.4 298.2 375.4 356.2 433.4 414.2 491.4 472.2 549.4 530.2
4 59.88 97.57 54.9 16.5 112.9 74.5 170.9 132.5 228.9 190.5 263.7 225.3 286.9 248.5 344.9 306.5 402.9 364.5 460.9 422.5 518.9 480.5
6 89.82 146.3 - - 82.4 24.7 140.4 82.7 198.4 140.7 233.2 175.5 256.4 198.7 314.4 256.7 372.4 314.7 430.4 372.7 488.4 430.7
8 119.8 195.1 - - - - 109.8 33.0 167.8 91.0 202.6 125.8 225.8 149.0 283.8 206.9 341.8 264.9 399.8 322.9 457.8 380.9
10 149.7 243.9 - - - - - - 137.3 41.2 172.1 76.0 195.3 99.2 253.3 157.2 311.3 215.2 369.3 273.2 427.3 331.2
12 179.6 292.7 - - - - - - - - 141.6 26.2 164.8 49.4 222.8 107.4 280.8 165.4 338.8 223.4 396.8 281.4
2 48.1 68.9 137.0 115.7 230.0 208.7 323.0 301.7 416.0 394.7 471.8 450.5 509.0 487.7 602.0 580.7 695.0 673.7 788.0 766.7 881.0 859.8
4 96.1 137.8 87.9 45.5 181.0 138.5 274.0 231.5 367.0 324.5 422.8 380.3 460.0 417.5 553.0 510.5 646.0 603.5 739.0 696.5 832.0 789.5
6 144.2 206.7 - - 131.9 68.2 224.9 161.2 317.9 254.2 373.7 310.0 410.9 347.2 503.9 440.2 596.9 533.2 689.9 626.2 782.9 719.2
8 192.3 275.6 - - - - 175.9 90.9 268.9 183.9 324.7 239.7 361.9 276.9 454.9 369.9 547.9 462.9 640.9 555.9 733.9 648.9
10 240.3 344.4 - - - - 126.9 20.7 219.9 113.7 275.7 169.5 312.9 206.7 405.9 299.7 498.9 392.7 591.9 485.7 684.9 578.7
12 288.4 413.3 - - - - - - 170.8 43.4 226.6 99.2 263.8 136.4 356.8 229.4 449.8 322.4 542.9 415.4 635.9 508.4
2 55.9 83.0 172.4 144.5 287.4 259.5 402.5 374.5 517.5 489.5 586.5 558.5 632.5 604.5 747.5 719.5 862.5 834.5 977.5 949.5 1,092 1,065
4 111.8 166.0 114.9 59.0 229.9 174.0 344.9 289.0 459.9 404.0 528.9 473.0 574.9 519.0 689.9 634.1 804.9 749.1 919.9 864.1 1,035 979.1
6 167.6 249.0 - - 172.3 88.6 287.3 203.6 402.3 318.6 471.3 387.6 517.3 433.6 632.3 548.6 747.3 663.6 862.3 778.6 977.3 893.6
8 223.5 332.0 - - - - 229.8 118.1 344.8 233.1 413.8 302.1 459.8 348.1 574.8 463.1 689.8 578.1 804.8 693.1 919.8 808.1
10 279.4 415.0 - - - - 172.2 32.6 287.2 147.6 356.2 216.6 402.2 262.6 517.2 377.6 632.2 492.6 747.2 607.6 862.2 722.6
12 335.3 498.0 - - - - - - 229.7 62.1 298.7 131.1 344.7 177.1 459.7 292.1 574.7 407.1 689.7 522.1 804.7 637.1
2 106.2 133.9 290.6 262.1 490.6 462.1 690.6 662.1 890.6 862.1 1,011 982.1 1,091 1,062 1,291 1,262 1,491 1,462 1,691 1,662 1,891 1,862
4 212.5 267.8 181.2 124.2 381.2 324.2 581.2 524.2 781.2 724.2 901.2 844.2 981.2 924.2 1,181 1,124 1,381 1,324 1,581 1,524 1,781 1,724
6 318.7 401.7 - - 271.8 186.3 471.8 386.3 671.8 586.3 791.8 706.3 871.8 786.3 1,072 986.3 1,272 1,186 1,472 1,386 1,672 1,586
8 424.9 535.6 - - 162.4 48.4 362.4 248.4 562.4 448.4 682.4 568.4 762.4 648.4 962.4 848.4 1,162 1,048 1,362 1,248 1,562 1,448
10 531.2 669.5 - - - - 253.0 110.5 453.0 310.5 573.0 430.5 653.0 510.5 853.0 710.5 1,053 910.5 1,253 1,111 1,453 1,311
12 637.4 803.4 - - - - - - 343.5 172.6 463.6 292.6 543.6 372.6 743.6 572.6 943.6 772.6 1,144 972.6 1,344 1,173
2 114.2 160.7 362.4 314.5 602.3 554.5 842.3 794.5 1,082 1,034 1,226 1,178 1,322 1,274 1,562 1,514 1,802 1,754 2,042 1,994 2,282 2,234
4 228.4 321.3 244.7 149.0 484.7 389.0 724.7 629.0 964.7 868.9 1,109 1,016 1,205 1,109 1,445 1,349 1,685 1,589 1,925 1,829 2,165 2,069
6 342.6 482.0 - - 367.1 223.5 607.1 463.5 847.1 703.5 991.1 847.4 1,097 943.4 1,327 1,183 1,567 1,423 1,807 1,663 2,047 1,903
8 456.8 642.7 - - 249.5 58.0 489.5 298.0 729.4 538.0 873.4 682.0 969.4 777.9 1,209 1,018 1,449 1,258 1,689 1,498 1,929 1,738
10 571.0 803.4 - - - - 371.8 132.5 611.8 372.5 755.8 516.5 851.8 612.5 1,092 852.4 1,332 1,092 1,572 1,332 1,812 1,572
12 685.2 964.0 - - - - - - 494.2 207.0 638.2 351.0 734.2 447.0 974.2 686.9 1,214 926.9 1,454 1,167 1,694 1,407
1 83.8 115.3 607.4 576.3 952.7 921.6 1,298 1,266 1,643 1,612 1,850 1,819 1,988 1,957 2,333 2,302 2,679 2,647 3,024 2,993 3,369 3,338
2 167.7 230.6 524.4 462.2 869.7 807.4 1,214 1,152 1,560 1,498 1,767 1,705 1,905 1,843 2,250 2,188 2,596 2,533 2,941 2,879 3,286 3,224
3 251.6 345.9 441.4 348.0 786.6 693.3 1,131 1,038 1,477 1,383 1,684 1,591 1,822 1,729 2,167 2,074 2,513 2,419 2,858 2,764 3,203 3,110
4 335.5 461.2 358.3 233.8 703.6 579.1 1,048 924.4 1,394 1,269 1,601 1,476 1,739 1,614 2,084 1,960 2,429 2,305 2,775 2,650 3,120 2,996
5 419.3 576.5 275.3 119.7 620.6 465.0 965.8 810.2 1,311 1,155 1,518 1,362 1,656 1,500 2,001 1,846 2,346 2,191 2,692 2,536 3,037 2,881
6 503.2 691.8 - - 537.5 350.8 882.8 696.1 1,228 1,041 1,435 1,248 1,573 1,386 1,918 1,731 2,263 2,077 2,609 2,422 2,954 2,767
7 587.1 807.1 - - 454.5 236.6 799.8 581.9 1,145 927.2 1,352 1,134 1,490 1,272 1,835 1,617 2,180 1,963 2,526 2,308 2,871 2,653
8 671.0 922.5 - - 371.5 122.5 716.7 467.7 1,062 813.0 1,269 1,020 1,407 1,158 1,752 1,503 2,097 1,848 2,443 2,194 2,788 2,539
9 754.8 1,037 - - - - 633.7 353.6 978.9 698.8 1,186 906.0 1,324 1,044 1,669 1,389 2,014 1,734 2,360 2,079 2,705 2,425
10 838.7 1,153 - - - - 550.6 239.4 895.9 584.7 1,103 791.8 1,241 929.9 1,586 1,275 1,931 1,620 2,277 1,965 2,622 2,311
11 922.6 1,268 - - - - - - 812.9 470.5 1,020 677.7 1,158 815.8 1,503 1,161 1,848 1,506 2,193 1,851 2,539 2,196
12 1,006 1,383 - - - - - - 729.8 356.4 937.0 563.5 1,075 701.6 1,420 1,046 1,765 1,392 2,110 1,737 2,456 2,082
7
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253 210 190 160 143 127 118 110 Model
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Torque Output Data
Single-Acting Actuators continued
Spring Pneumatic Torque (Nm)
Torque (Nm) 2 bar 3 bar 4 bar 5 bar 5.6 bar 6 bar 7 bar 8 bar 9 bar 10 bar
0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90° 0° 90°
2 238.1 321.3 674.8 589.1 1,135 1,049 1,595 1,509  2,055  1,969  2,331  2,245  2,515  2,429  2,975  2,889  3,435  3,349  3,895  3,809  4,355  4,269 
4 476.3 642.7 429.5 258.1 889.6 718.2 1,350 1,178  1,810  1,638  2,086  1,914  2,270  2,098  2,730  2,558  3,190  3,018  3,650  3,478  4,110  3,938 
6 714.4 964.0 - - 644.3 387.2 1,104 847.2  1,564  1,307  1,840  1,583  2,024  1,767  2,484  2,227  2,945  2,687  3,405  3,147  3,865  3,607 
8 952.5 1,285 - - - - 859.1 516.2  1,319  976  1,595  1,252  1,779  1,436  2,239  1,896  2,699  2,356  3,159  2,816  3,619  3,276 
10 1,191 1,607 - - - - 613.8 185.2  1,074  645  1,350  921  1,534  1,105  1,994  1,565  2,454  2,025  2,914  2,485  3,374  2,945 
12 1,429 1,928 - - - - - -  829  314  1,105  590  1,289  774  1,749  1,234  2,209  1,694  2,669  2,154  3,129  2,614 
2 272.2 406.1 880 742 1,460 1,322 2,040 1,902  2,620  2,482  2,968  2,830  3,200  3,062  3,780  3,642  4,360  4,222  4,940  4,802  5,520  5,382 
4 544.4 812.2 599 323 1,179 903 1,759 1,484  2,339  2,064  2,687  2,412  2,919  2,644  3,499  3,224  4,079  3,804  4,659  4,384  5,239  4,964 
6 816.6 1,218 - - 899 485 1,479 1,065  2,059  1,645  2,407  1,993  2,639  2,225  3,219  2,805  3,799  3,385  4,379  3,965  4,959  4,545 
8 1,089 1,624 - - - - 1,199 647  1,779  1,227  2,127  1,575  2,359  1,807  2,939  2,387  3,519  2,967  4,099  3,547  4,679  4,127 
10 1,361 2,031 - - - - 918 229  1,498  809  1,846  1,157  2,078  1,389  2,658  1,969  3,238  2,549  3,818  3,129  4,398  3,709 
12 1,633 2,437 - - - - - -  1,218  390  1,566  738  1,798  970  2,378  1,550  2,958  2,130  3,538  2,710  4,118  3,290 
1 136 203 1,460 1,391 2,260 2,191 3,060 2,991 3,860 3,791 4,340 4,271 4,660 4,591 5,460 5,391 6,260 6,191 7,060 6,991 7,860 7,791
2 272 406 1,320 1,182 2,120 1,982 2,920 2,782 3,720 3,582 4,200 4,062 4,520 4,382 5,320 5,182 6,120 5,982 6,920 6,782 7,720 7,582
3 408 609 1,179 973 1,979 1,773 2,779 2,573 3,579 3,373 4,059 3,853 4,379 4,173 5,179 4,973 5,979 5,773 6,779 6,573 7,579 7,373
4 544 812 1,039 763 1,839 1,563 2,639 2,363 3,439 3,163 3,919 3,643 4,239 3,963 5,039 4,763 5,839 5,563 6,639 6,363 7,439 7,163
5 681 1,015 899 554 1,699 1,354 2,499 2,154 3,299 2,954 3,779 3,434 4,099 3,754 4,899 4,554 5,699 5,354 6,499 6,154 7,299 6,954
6 817 1,218 759 345 1,559 1,145 2,359 1,945 3,159 2,745 3,639 3,225 3,959 3,545 4,759 4,345 5,559 5,145 6,359 5,945 7,159 6,745
7 953 1,421 619 136 1,419 936 2,219 1,736 3,019 2,536 3,499 3,016 3,819 3,336 4,619 4,136 5,419 4,936 6,219 5,736 7,019 6,536
8 1,089 1,624 - - 1,278 727 2,078 1,527 2,878 2,327 3,358 2,807 3,678 3,127 4,479 3,927 5,279 4,727 6,079 5,527 6,879 6,327
9 1,225 1,827 - - 1,138 518 1,938 1,318 2,738 2,118 3,218 2,598 3,538 2,918 4,338 3,718 5,138 4,518 5,938 5,318 6,738 6,118
10 1,361 2,031 - - 998 309 1,798 1,109 2,598 1,909 3,078 2,389 3,398 2,709 4,198 3,509 4,998 4,309 5,798 5,109 6,598 5,909
11 1,497 2,234 - - - - 1,658 899 2,458 1,699 2,938 2,179 3,258 2,499 4,058 3,299 4,858 4,099 5,658 4,899 6,458 5,699
12 1,633 2,437 - - - - 1,518 690 2,318 1,490 2,798 1,970 3,118 2,290 3,918 3,090 4,718 3,890 5,518 4,690 6,318 5,490
13 1,769 2,640 - - - - 1,378 481 2,178 1,281 2,658 1,761 2,978 2,081 3,778 2,881 4,578 3,681 5,378 4,481 6,178 5,281
14 1,906 2,843 - - - - 1,237 272 2,037 1,072 2,517 1,552 2,837 1,872 3,637 2,672 4,437 3,472 5,237 4,272 6,037 5,072
15 2,042 3,046 - - - - - - 1,897 863 2,377 1,343 2,697 1,663 3,497 2,463 4,297 3,263 5,097 4,063 5,897 4,863
16 2,178 3,249 - - - - - - 1,757 654 2,237 1,134 2,557 1,454 3,357 2,254 4,157 3,054 4,957 3,854 5,757 4,654
10 1,135 1,930 1,940 1,122 3,470 2,652 5,000 4,182 6,530 5,712 7,448 6,630 8,060 7,242 9,590 8,772 11,120 10,302 12,650 11,832 14,180 13,362
11 1,249 2,123 1,828 928.0 3,358 2,458 4,888 3,988 6,418 5,518 7,336 6,436 7,948 7,048 9,478 8,578 11,008 10,108 12,538 11,638 14,068 13,168
12 1,362 2,316 - - 3,246 2,264 4,776 3,794 6,306 5,324 7,224 6,242 7,836 6,854 9,366 8,384 10,896 9,914 12,426 11,444 13,956 12,974
13 1,476 2,509 - - 3,134 2,071 4,664 3,601 6,194 5,131 7,112 6,049 7,724 6,661 9,254 8,191 10,784 9,721 12,314 11,251 13,844 12,781
14 1,589 2,702 - - 3,022 1,877 4,552 3,407 6,082 4,937 7,000 5,855 7,612 6,467 9,142 7,997 10,672 9,527 12,202 11,057 13,732 12,587
15 1,703 2,895 - - 2,910 1,683 4,440 3,213 5,970 4,743 6,888 5,661 7,500 6,273 9,030 7,803 10,560 9,333 12,090 10,863 13,620 12,393
16 1,816 3,088 - - 2,798 1,489 4,328 3,019 5,858 4,549 6,776 5,467 7,388 6,079 8,918 7,609 10,448 9,139 11,978 10,669 13,508 12,199
17 1,930 3,281 - - 2,686 1,295 4,216 2,825 5,746 4,355 6,664 5,273 7,276 5,885 8,806 7,415 10,336 8,945 11,866 10,475 13,396 12,005
18 2,043 3,474 - - 2,574 1,102 4,104 2,632 5,634 4,162 6,552 5,080 7,164 5,692 8,694 7,222 10,224 8,752 11,754 10,282 13,284 11,812
19 2,157 3,667 - - - - 3,992 2,438 5,522 3,968 6,440 4,886 7,052 5,498 8,582 7,028 10,112 8,558 11,642 10,088 13,172 11,618
20 2,270 3,860 - - - - 3,880 2,244 5,410 3,774 6,328 4,692 6,940 5,304 8,470 6,834 10,000 8,364 11,530 9,894 13,060 11,424
21 2,384 4,053 - - - - 3,768 2,050 5,298 3,580 6,216 4,498 6,828 5,110 8,358 6,640 9,888 8,170 11,418 9,700 12,948 11,230
22 2,497 4,246 - - - - 3,656 1,856 5,186 3,386 6,104 4,304 6,716 4,916 8,246 6,446 9,776 7,976 11,306 9,506 12,836 11,036
23 2,611 4,439 - - - - 3,544 1,663 5,074 3,193 5,992 4,111 6,604 4,723 8,134 6,253 9,664 7,783 11,194 9,313 12,724 10,843
24 2,724 4,632 - - - - 3,432 1,469 4,962 2,999 5,880 3,917 6,492 4,529 8,022 6,059 9,552 7,589 11,082 9,119 12,612 10,649
25 2,838 4,825 - - - - 3,320 1,275 4,850 2,805 5,768 3,723 6,380 4,335 7,910 5,865 9,440 7,395 10,970 8,925 12,500 10,455
26 2,951 5,018 - - - - 3,208 1,081 4,738 2,611 5,656 3,529 6,268 4,141 7,798 5,671 9,328 7,201 10,858 8,731 12,388 10,261
27 3,065 5,211 - - - - - - 4,626 2,417 5,544 3,335 6,156 3,947 7,686 5,477 9,216 7,007 10,746 8,537 12,276 10,067
28 3,178 5,404 - - - - - - 4,514 2,224 5,432 3,142 6,044 3,754 7,574 5,284 9,104 6,814 10,634 8,344 12,164 9,874
29 3,292 5,597 - - - - - - 4,402 2,030 5,320 2,948 5,932 3,560 7,462 5,090 8,992 6,620 10,522 8,150 12,052 9,680
30 3,405 5,790 - - - - - - 4,290 1,836 5,208 2,754 5,820 3,366 7,350 4,896 8,880 6,426 10,410 7,956 11,940 9,486
31 3,519 5,983 - - - - - - 4,178 1,642 5,096 2,560 5,708 3,172 7,238 4,702 8,768 6,232 10,298 7,762 11,828 9,292
32 3,632 6,176 - - - - - - 4,066 1,448 4,984 2,366 5,596 2,978 7,126 4,508 8,656 6,038 10,186 7,568 11,716 9,098
8 GT Range
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302, 302-F25 300, 300-F25 255 254 Model
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Dimension Data and Mounting Standards
M.5 x 8 (NAMUR) Ch. Size 33 to 92 = G 1/8" NAMUR, size 110 to 302 = G 1/4" NAMUR
(Optionally 20 mm 
on sizes 33 to 143)
24
Air connection according NAMUR
L
(S) Mounting interface: Size 33 to 127 = 30 x 80, size 143 to 302 = 30 x 130 according NAMUR
M.5 x 8 (NAMUR) (S) ISO F ch.q
Model Dimensions (mm) Displacement (dm3) Weight (kg)  
L H J B Ch Ch.q ISO SR DA SR DA
90º 120º 180º 90º 90º 120º 180º 90º 90º 120º 180º
33 90 - - 65 13 61.5 10 9/11 F03 - 0.15 - - - 0.47 - -
34 90 - - 65 13 61.5 10 9/11 F04 - 0.15 - - - 0.47 - -
43 116 - - 65 13 61.5 10 9/11 F03/F05 0.10 0.18 - - 0.66 0.60 - -
44 116 - - 65 13 61.5 10 9/11 F04 0.10 0.18 - - 0.66 0.60 - -
52 133 151 195 74 18 68.5 10 14 F03/F05 0.13 0.25 0.28 0.46 1.00 0.90 1.10 1.30
63 137 155 200 88 20 80 10 14 F05/F07 0.21 0.40 0.45 0.74 1.62 1.45 1.70 2.00
75 161 183 237 100 20 92.5 10 17 F05/F07 0.32 0.60 0.68 1.12 2.45 2.10 2.46 2.90
83 180 205 268 108 20 99.5 10 17 F05/F07 0.45 0.88 1.00 1.63 2.95 2.50 2.95 3.50
92 209 239 310 117 21 110.5 14 17 F05/F07 0.62 1.20 1.35 2.25 4.00 3.40 4.00 4.60
110 223 253 323 140 25.5 120 14 22 F07/F10 0.98 1.90 2.15 3.52 6.20 5.20 6.10 7.20
118 293 345 429 140 36 120 20 22 F07/F10 1.40 2.70 3.05 5.00 8.35 7.10 8.00 9.70
127 301 353 453 160 36 137 20 22 F07/F10 2.00 3.65 4.10 6.80 10.7 9.00 10.0 12.5
143 337 387 488 198 33 172 20 27 F10/F12 2.50 4.60 6.12 9.20 15.8 12.4 14.0 16.0
160 379 444 570 198 39 172 28 27 F10/F12 3.80 7.00 8.00 13.0 20.1 16.4 18.8 26.0
190 422 - - 255 41 224 28 36 F14 6.50 12.5 - - 37.8 28.0 - -
210 468 544 696 255 40 224 32 36 F14 8.00 15.0 17.0 21.5 39.6 31.8 37.4 49.2
253 524 600 751 302 50 272 32 46 F16 10 19.2 22 29 56 44 50 63
254 609 711 911 302 50 272 32 46 F16 14.0 27.0 31.5 41.0 70.6 55.5 66.5 79.8
255 689 815 - 302 50 272 32 46 F16 17.0 32.0 38.0 - 84.3 69.2 77.0 -
300 689 814 - 360 50 360 32 46 F16 25 46 68 - 107.1 92 105 -
300-F25 689 814 - 392 65 360 32 55 F25 25 46 68 - 114 99 112 -
302 1,176 - - 360 50 360 32 46 F16 46 84 - - 179 144 - -
302-F25 1,176 - - 392 65 360 32 55 F25 46 84 - - 179 154 - -
Optional Body Air Connections Optional Bottom Flange Drilling Optional Valve Shaft Interface
• UNI EN ISO 228 G 1/2"  • ISO F04 (for sizes 52, 63, 75) • Single square parallel ISO 5212
(sizes from 110 to 302)
• ISO F05 (for size 110) • Single square diagonal ISO 5213
• UNI EN ISO 228 G 3/4"   
(sizes from 253 to 302) • ISO F07 (for size 143) • Double D
• UNI EN ISO 228 G 1"   • ISO F10 and F12 (for size 190 and 210) Note: standard is double square ISO 5211.
(sizes from 300 to 302) • ISO F12 (for size 127)
• ISO F14 (for size 253)
• ISO F12 and F16 (for size 254)
• ISO F25 (for sizes 300 and 302)
9
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32
(S)
B
ch.q
.
J
30
H
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Model Number Designation
Example Model Number GTA - 52 - FC - 04 - W - ST 
 
Range and Rotation
GTA = 90° rotation 
GTB = 120° rotation 
GTC = 180° rotation
Body Size
33, 34, 43, 44, 52, 63, 75, 83, 92, 110, 118, 127, 143, 160, 190, 210, 253, 254, 255, 300, 302 
Effect
DA = Double-acting 
FC = Spring-return, fail to close (clockwise) 
FO = Spring-return, fail to open (counter-clockwise)
Spring Set
01, 02 ,03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16 17, 18, 19, 20, 21, 22, 23, 24, 25,  
26, 27, 28, 29, 30, 31, 32 (not applicable for double-acting)
Travel Stop
X0 = No end stop (33, 34, 43 and 44 body size only)
K0 = Single direction +/- 5 degrees
K1 = Single direction +5 to -90 degrees 
W0 = Dual direction +/- 5 degrees open, +5 to -25 degrees close
W1 = Dual direction +5 to -90 degrees open, +5 to -25 degrees close
Z0 = B locked end stop
Temperature Range
ST = Standard  -50 to +70 ºC (-58 to +158 ºF) 
HT = High  -15 to +160 ºC (+5 to +320 ºF) 
ET = Extended  -60 to +200 ºC (-76 to +392 ºF) 
SX = Special (consult factory)
10 GT Range
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Assembly Configurations
The graphics below show the relative orientation of the 
piston and pinion for each configuration, as viewed from the 
top side of the actuator. In the descriptions that follow, that 
perspective is assumed. Pinion rotation is indicated for each 
as CW (clockwise) or CCW (counter-clockwise).
Port 2 is connected to the inboard side of the pistons. 
Pressurising port 2 will force the pistons out until they reach 
the travel stops. The direction of pinion rotation is determined 
by the assembly configuration. Venting is through port 4.
Port 4 is connected to the outboard side of the pistons. 
Pressurising port 4 will force the pistons in until they reach 
the travel stops (if the actuator is so equipped as they’re 
optional). The direction of pinion rotation is determined by 
the assembly configuration. Venting is through port 2.
Note that on spring-return actuators, as with double-acting, 
pressurising port 2 will move the pistons out. When port 2 is 
depressurised, spring force will move the pistons in. Venting 2 PORTS 4
is through port 4. Port 4 is not to be pressurised on spring-
return actuators.
Consult the GT Range Installation and Commissioning Manual 
or Rotork for detailed connection and operation information.
STYLE PORT 4 (OUTBOARD) PRESSURISED PORT 2 (INBOARD) PRESSURISED
Shown at end of stroke Shown at end of stroke
A cw ccw
STANDARD
B cw ccw
OPTIONAL
C ccw cw
OPTIONAL
D ccw cw
OPTIONAL
11
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www.rotork.com
A full listing of our worldwide sales and 
service network is available on our website.
Rotork plc Rotork is a corporate 
Brassmill Lane, Bath, UK member of the Institute 
tel +44 (0)1225 733200 of Asset Management
fax +44 (0)1225 333467
email [email protected]
As part of a process of on-going product development, Rotork reserves the right to amend and change 
specifications without prior notice. Published data may be subject to change. For the very latest version 
PUB110-001-00 release, visit our website at www.rotork.com
The name Rotork is a registered trademark. Rotork recognises all registered trademarks. Published and 
Issue 08/19 produced in the UK by Rotork. POWTG0919
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