Pneumatic Rotary Single Acting Actuator
   
Offers ISO 5211 Standard Pneumatic Actuator for all your 90° Valves & Dampers Automation Requirements

ACTUATOR ! BECAUSE

  • Hard Anodized
    Barrel/ Body to Protect from Hazardous atmospher & Corrosion, which enhance life of actuator
  • Namur Standard Pinion Top
    The pinion (shaft) top drilled and slotted for easy assemling of switch, positioners and other accessories.
  • Namur pad for Solenoid Valve
    Air Supply ports are covered with interface plate as per NAMUR standard to facilitate direct mounting of solenoid valve at actuator.
  • IS0 - 5211 Standard Mounting for valve
    Double bottom driling for actuator to valve assembling & Centering. Designed for strength and easy mounting or interchangeability
  • IS0 - 5211 Standard Pinion Bottom
    Bottom of the pinion (shaft) as female key, double square hole for assembling on vlaves with square key stem and in line or turned to 45°. Designed for strength and sur-fix with stem
  • Sliding Skates
    The innovation for replaceable sliding skates, between Pistons (Racks) and internal bore surface of the Actuator, just to avoid metal contact, which enhances the Actuator lifr.
  • Compact Design
    Actuators are designed as compact and common for both double acting and single acting (spring return) which offers high torque values. Internal sliding surface, lapped and anodized for minimum friction and long life of actuator.

MATERIAL OF CONSTRUCTION

Body Aluminium Hard Anodized
Shaft(Pinion) EN8/ AISI S.S. 304
Caps Aluminium Pressure die cast
Guides Low friction acetalic resion
Pistons (Racks) Aluminium Pressure die cast
Bolts Stainless Steel
Springs Pre-loaded spring cartridges & SNS(LH/RH) Spring type
Sealing Nitrile

GENERAL FEATURES

  • Oper.press         : 35 to 150 psi
  • Temperature range : -20°C to 90°C
  • Air Supply         : Filtered, dry or lubricated
  • Ext.protection      : Corrosion strength to 500 hours in salted fog
  • DIMENSIONS :

    MODEL C D B A PCD
    SMALL
    PCD BIG SQUARE WEIGHT
    (Approx)
    AIR CONSUMPTION-Lts
    D-ACTING S-ACTING
    ARM -48-S 69 26 95 152 36 50 11 X 11 1.250 ON REQ. ON REQ.
    ARM -50-S 74 28 102 181.5 36 50 14 X 14 1.550 ON REQ. ON REQ.
    ARM -63-S 87.5 26.8 114.3 210 50 70 14 X 14 2.800 ON REQ. ON REQ.
    ARM -75-S 100 29 129 254.5 50 70 17 X 17 3.950 ON REQ. ON REQ.
    ARM -83-S 109.5 26.5 136 269 50 70 17 X 17 5.000 ON REQ. ON REQ.
    ARM -90-S 117 28.5 145.5 338 - 70 17 X 17 7.000 ON REQ. ON REQ.
    ARM -92-S 117 25 142 - 70 70 17 X 17 - ON REQ. ON REQ.
    ARM -110-S 140 27.5 167.5 335 102 102 22 X 22 11.100 ON REQ. ON REQ.

    SELECTION OF SINGLE ACTING ACTUATOR

  • Conclude your required torque value.
  • Increase 25% for an acceptable safety factor.
  • Now look on TABLE- D, your required torque value should be nearby higher value of "FIX TORQUE BY SPRING" & TORQUE BY AIR/ GAS PRESSURE".
  • The found position shows the model of "aira" actuator and working pressure in bar, we need.

  • EXAMPLE

  • Suppose we need 120 Nm torque to drive a value.
  • Increase 25% - 150 Nm for safety factor.
  • In table given below actuator model ARA- 110-S Show 165 Nm "TORQUE BY AIR/ GAS PRESSURE AT 6 bar"
  • DIMENSIONS :

    MODEL SPRINGSET AIR PRESSURE
    3 BAR 4 BAR 5 BAR 6 BAR 7 BAR 8 BAR -9 BAR
    RCA-50-S 1 13 14 - - - - -
      2 - - 16 18 25.5 30 35.5
    RCA-75-S 1 26.4 36 - - - - -
      2 - - 47 50 74.5 87 101
    RCA-90-S 1 40 59 - - - - -
      2 - - 75 94 119 131 146
    RCA-110-S 1 81 107 - - - - -
      2 - - 133 165 195 213 234
    Note: We reserve the right to change design & technical data furnished due to continious product development without prior notice.