GS (spring return) pneumatic actuator A105 carbon steel

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1.Energized and self-lubricated strips
Less friction between piston and cylinder
It prevents the bonding of the seal to the cylinder even after long periods of inactivity

2.Slots, bushes and pins made by steel with hardness higher than 50 HRC
Higher resistance to the forces inside the actuator

3.Rolling friction between piston and slot
Less friction

4.Scotch yoke with rolling friction (transforming rotary motion into linear motion using piston and shaft without teeths/gears)
Reduced friction between piston and shaft with consequently less wear on the relevant parts
Empowered Breakaway Torque (BTO & BTC)
Smaller volume/size than rack and pinion actuators (with the same torque) therefore less space required for installation
Less weight than the rack and pinion (-30% kg / Nm), with consequent savings on the construction sizing of the plant/equipment
Lower air consumption compared to the rack and pinion actuators (-40% air cm3/Nm for Double Acting and -20% air cm3/Nm for Spring Return) therefore less load on the compressor or the possibility of using a smaller compressor's size.

5.Rolled cylinder

Less wear of the energized ties thanks to the low roughness of the surface (0.15 micron Ra)

From sizes bigger than GD15, NAMUR interface for solenoid valve is already integrated.
No need for extra plate.

100% in- house manufacturing process technology
Maximum control and accuracy in all the stages of the manufacturing process

ATEX Certificate
Installation is allowed in a potential explosive environment

Up to SIL 3 Certified
Guarantee of the high level of functional safety.

TECHNICAL FEATURES
Torque from 360 Nm to 960 Nm
Mounting flange according to EN ISO 5211; F10 - F12 - F14 - F16
In compliance with EN 15714-3
Rotation angle 92° (-1°, +91°)
Torque: the return torque depends on spring action only notwithstanding the air supply
The spring is provided in four different sizes; see table - general catalogue pneumatic actuator GS
The actuator automatic closing takes place in clockwise direction by means of its springs
In the code of standard version GS actuators, it is indicated the size of the springs (6=5,6 bar) followed by the breakaway torque in Nm at 5,6 bar air supply.
Actuator with epoxy painting
ATEX version in conformity with directive 2014/34/EU

WORKING CONDITION

Temperature: from -20°C to +80°C.
Air supply: 5,6 bar; maximum 8,4 bar.
Actuating media: filtered dry compressed air, not necessarily lubricated
In case of lubrication use non-detergent oil compatible with the internal materials of the actuator version you are using

DATA SHEET

Code
GSC0360416S
GSC0480416S
GSC0720424S
GSC0720416S
GSC0960416S

Spare seals
KGGSS223
KGGSS224
KGGSS225
KGGSS225
KGGSS226

Size
GS0360
F10/F12
GS0480
F12/F16
GS0720
F12
GS0720
F14
GS0960
F12/F16

A
565,5
598
736,8
736,8
769,6

A1 (2,8 Bar)
483,5
506
630,8
630,8
645

B
27
36
36
36
46

C x depth
M10x11,5
M12x20
M12x18
M16x18
M12x23

D x depth
M12x11,5
M20x20
-
-
M20x23

ØE
102
125
125
140
125

ØF
125
165
-
-
165

G
19,5
19,5
19,5
19,5
18,5

ØH
156
169
188
188
211

I
22
24
27
27
32

J
138,5
156,3
179,5
179,5
192

K
115
150
130
130
150

L
178
198
216
216
237,7

M
78,5
93,5
101,5
101,5
114,7

N
99,5
104,5
114,5
114,5
123

O
29,5
38,5
38,5
38,5
48,5

P
116
135
160
160
160

ØR
31,8
36,5
41
41
46

S
30
30
30
30
30

T
148
168
186
186
207,7

X
150
150
150
150
150

Y
155
168
187
187
209

Z
525,8
565
685
685
718,4

Z1 (2,8 Bar)
435,8
473
559,4
559,4
593,8

Ch
22
22
24
24
24

Ch1 (2,8 Bar)
24
24
30
30
30

Weight (Kg)
45,5
60
82,5
82,5
112

Weight (2,8 Bar) (Kg)
37,5
51
77
77
96

Air  (dm³/cycle) (l/cycle)
2
2,7
4,3
4,3
5,6

A105 FROM BAR DOUBLE ACTING AND SPRING RETURN PNEUMATIC ACTUATOR COMPONENTS

A105 FROM BAR DOUBLE ACTING AND SPRING RETURN PNEUMATIC ACTUATOR COMPONENTS
PosDenominationQ.tyMaterial
1Cylinder1Steel alloy
2Piston2Aluminium alloy
3Cap2Steel alloy
4Shaft1Stainless steel
5Scotch yoke1Steel alloy
6Bearing shaft1Acetalic resin
7Upper shaft support1Acetalic resin
8Bearing shaft1Acetalic resin
9Ext.elastic pin1Steel alloy
10Int.elastic pin1Steel alloy
11Steel bush2Steel alloy
12Rotative sleeve2Steel alloy
13*Dynamic seal2Polyurethane
14*Support disk4PTFE carbo-graphite filled
15*O-ring2Nitrilic rubber
16O-ring1FKM
17Thrust bearing1Acetalic resin
18Washer1Stainless steel
19Seeger1Stainless steel
20Lower shaft support1Acetalic resin
21O-ring1FKM
22*GD O-ring2NBR
23Screws8Stainless steel
24Grub screws2Stainless steel
25O-ring2Nitrilic rubber
26Adjusting nut2Stainless steel
27Fixing flange1Steel alloy
28Screws4Stainless steel
29*GS O-ring4NBR
30Cylinder spacer2Steel alloy
31Spring2Steel alloy
32Spring cap2Aluminium alloy
33Spring loading screw2Stainless steel
* Components of spare part kit

GS PNEUMATIC ACTUATOR OPERATING DIAGRAM

Drawings on the left = valve in open position
Drawings on the right = valve in closed position


Typical air connection diagram
The pistons of the standard GS actuators are mounted as shown above. Although the spring force is small, the geometry of the mechanism provides more torque at the end of stroke. When the actuator is in the valve open position and the springs are fully compressed, the end stops can be adjusted with precision. Reverse acting spring return actuators are required when the valve needs to open automatically in the case that the pressurized air or power supply is turned off. In reverse acting actuators, the pistons are inserted into the cylinder in the same way as in the Double Acting version and, due to the force of the spring, the actuator opens normally. Caution. The normal torque performance in the reverse acting version, due to its construction, is different from that of the standard version. Caution. To prevent dust or dirt from being sucked into the actuator chamber during spring action, install a filter on port 2. Port 4 is connected to the middle chamber and, when pressurized, the drive shaft rotates anticlockwise to open. In accordance with the international standard ISO 5599-2, the position, location, orientation and shape of the actuator air port connections must be clearly identified and marketed using numbers 2 and 4.

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For more information check the ACTUATECH Accessories Catalogue.