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Aluminium spring return pneumatic actuator SR type | Omal

Aluminium spring return pneumatic actuator SR type | Omal

Macro Pneumatic actuators
Category Aluminium actuators
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Benefits:
Aluminium spring return pneumatic actuator SR type - benefits -

 

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 DAN15, 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

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

 

Features:

TECHNICAL FEATURES
Torque from 15 Nm to 4000 Nm.
Mounting flange according to EN ISO 5211
F03 – F04 – F05 – F07 – F10 – F12 – F14 – F16 -F25.
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).
The code numbers after the letters SR, always correspond to the breakaway torque in Nm by 5,6 bar air supply.
The actuator automatic closing takes place in clockwise direction by means of its springs.
ATEX version in conformity with directive 2014/34/EU. Please add YX at the end of the code for ATEX version.

WORKING CONDITION
Temperature: from -20°C to +80°C. (Special versions: high temperature: -20°C +150°C; low temperature: -50°C +60°)
Air supply: 5,6 bar; maximum 8,4 bar.
Actuating media: filtered dry compressed air, not necessarily lubricated.
In case of lubricated air, either non detergent oil or NBR compatible oil, must be used.

 

Diagrams & Breakaway Torque:

Output torque diagram related to rotation angle

Aluminium spring return pneumatic actuator SR type - diagrams and breakaway torque - Output torque diagram related to rotation angle

 

OUTPUT TORQUE TABLE (Nm)            α°= ROTATION ANGLE
SIZE α° 2,8 bar ÷ 40 PSI 3,5 bar ÷ 50 PSI 4,2 bar ÷ 60 PSI 5,6 bar ÷ 80 PSI
air spring air spring air spring air spring
SRN 15 0° 7,5 5 9,4 6,3 11,3 7,5 15 10
50° 3,7 3,7 4,7 4,7 5,6 5,6 7,5 7,5
90° 5 7,5 6,3 9,4 7,5 11,3 10 15
SRN 30 0° 15 10 18,8 12,5 22,5 15 30 20
50° 7,5 7,5 9,4 9,4 11,3 11,3 15 15
90° 10 15 12,5 18,8 15 22,5 20 30
SRN 53 0° 26,5 17,5 33 22 40 26 53 35
50° 13 13 16,5 16,5 19,5 19,5 26 26
90° 17,5 26,5 22 33 26 40 35 53
SRN 60 0° 30 20 37,5 25 45 30 60 40
50° 15 15 18,8 18,8 22,5 22,5 30 30
90° 20 30 25 37,5 30 45 40 60
SRN 90 0° 45 30 56,3 37,5 67,5 45 90 60
50° 22,5 22,5 28,1 28,1 33,9 33,9 45 45
90° 30 45 37,5 56,3 45 67,5 60 90
SRN 120 0° 60 40 75 50 90 60 120 80
50° 30 30 37,5 37,5 45 45 60 60
90° 40 60 50 75 60 90 80 120
SRN 180 0° 90 60 112,5 75 135 90 180 120
50° 45 45 56,3 56,3 67,5 67,5 90 90
90° 60 90 75 112,5 90 135 120 180
SRN 240 0° 120 80 150 100 180 120 240 160
50° 60 60 75 75 90 90 120 120
90° 80 120 100 150 120 180 160 240
SRN 360 0° 180 120 225 150 270 180 360 240
50° 90 90 112,5 112,5 135 135 180 180
90° 120 180 150 225 180 270 240 360
SRN 480 0° 240 160 300 200 360 240 480 320
50° 120 120 150 150 180 180 240 240
90° 160 240 200 300 240 360 320 480
SRN 720 0° 360 240 450 300 540 360 720 480
50° 180 180 225 225 270 270 360 360
90° 240 360 300 450 360 540 480 720
SRN 960 0° 480 320 600 400 720 480 960 640
50° 240 240 300 300 360 360 480 480
90° 320 480 400 600 480 720 640 960
SR 1440 0° — — 900 600 — — 1440 960
50° — — 450 450 — — 720 720
90° — — 600 900 — — 960 1440
SR 1920 0° 960 640 1200 800 1440 960 1920 1280
50° 480 480 600 600 720 720 960 960
90° 640 960 800 1200 960 1440 1280 1920
SR 2880 0° 1440 960 1800 1200 2160 1440 2880 1920
50° 720 720 900 900 1080 1080 1440 1440
90° 960 1440 1200 1800 1440 2160 1920 2880
SR 4000 0° 2000 1333 2500 1666,3 3000 1999,5 4000 2666
50° 1000 1000 1250 1250 1500 1500 2000 2000
90° 1333 2000 1666,3 2500 1999,5 3000 2666 4000

Specifications:

WORKING PLANE PNEUMATIC ACTUATOR “SR” TYPE

Aluminium spring return pneumatic actuator SR type - specifications - WORKING PLANE PNEUMATIC ACTUATOR “SR” TYPE
CERTIFICATES:
ATEX – Pneumatic Actuators
EAC TR CU 010/2011 – Pneumatic Actuators
EAC TR CU 012/2011 – EX
SIL EN 61508 – Actuators: SR, SRN, DA, DAN
Type Approval Certificate for Marine and machinery systems and equipment

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