Scotch Yoke Pneumatic Actuator

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①Partlist

No.part namematerial
No.part namematerial

20spring module/
1cylinder end capQT500-7
21hydraulic module/
2studC45
22lead screwC45
3piston rodAlloy steel
23spring seatC45
4cylinder end capQT500-7
24end capCarbon Steel
5up coverHT200
25end capC45
6coverQT500-7
26guide blockQT500-7
7indicator shaftC45
27O-ringNBR
8small coverHT200
28yokeCarbon Steel
9indicator boardAL
29bodyCarbon Steel
10O-ringNBR
30adjust boltC45-Ni
11bearingH62
31circlip65Mn
12O-ringNBR
32bearingH62
13rollerGCr15
33O-ringNBR
14pinGCr15
34pistonCarbon Steel
15torque indicator pin45
35O-ringNBR
16worm45
36guide ringPTFE
17Energy saving unit/
37cylinderC20
18supporting seat45
38O-ringNBR
19tension rod45
39handwheelDI



②Output Torque

Output Torque/Spring Return(N.m)Available manual overrides



   Model

4 Bar5 Bar6 Barspring return torque
  0°             start  90°               end     0°      start   90°    end     0°      start    90°    end         0°        end         0°        end
DFA16-300

2194 1034 2972 1812 1700 2860 handwheel(HW)
DFA16-3502850 1690 3880 2720 

1700 2860 
DFA25-350

3809 2383 5118 3692 2734 4160 
DFA25-4504191 2765 5922 4496 

2734 4160 
DFA30-500

9352 6551 12525 9724 6514 9315 hydraulic pump(HY)
DFA30-5509100 6300 12700 9900 

5700 8500 
DFA35-550

14393 8751 18913 13271 8207 13849 
DFA35-60013493 7851 18103 12461 

8207 13849 
DFA35-70021177 11174 29665 19669 38161 28157 12786 22789 
DFA40-800 35000 25600 47000 36000 

18098 27523 
Output Torque/Double Acting(N.m)Available manual overrides
Model                  4Bar            5Bar            6Bar                     7Bar
startrunningstartrunningstartrunningstartrunning
DFA16-3003115 1869 3894 2362 ----DFM series delutchable manual overrides
DFA16-3504550 2730 ------
DFA25-3505235 3141 6543 3926 7852 4711 --

DFM series delutchable manual overrides

 or hydraulic pump(HY)

DFA25-4006925 4155 8656 5194 10388 6233 --
DFA25-4508412 5047 10515 6309 12618 7571 --hydraulic pump(HY)
DFA30-45010280 6168 12580 7548 15420 9252 --
DFA30-50012693 7616 15866 9520 ----
DFA30-55014800 8880 18400 11040 22080 13248 --
DFA35-55018080 10848 22600 13560 27120 16272 31640 18984 
DFA35-60021700 13020 26310 15786 31572 18943 --
DFA35-500DA23396424021424553002650946360315943742036
DFA40-600DA259778422767472357095896686341410461273984


③Dimensions1

MODELDLL1L2HEE1E2D1H1BTD2nM1M2XYM3

 Unit Weight  

(KG)DA/S

DFA16-3003651628513688107751302808015022821654M20RC1/265100M6150/328
DFA16-350415
DFA25-35041519036158231039016529510017528106.42548M16RC1/265100M6340/480
DFA25-400465
DFA25-450515
DFA30-450515233571596013711018536812023532127.42988M20RC3/470140M8400/825
DFA30-500565
DFA30-550620
DFA35-5506202960920123015514322045316026140169.43568M30RC3/470140M8640/1400
DFA35-600685
DFA35-650750

*Dimensions above was just suitable for Spring Return type model from DFA16-300S to DFA35-600S, and Single Cylinder Double Acting type model from DFA16-300DA to DFA35-650DA.

③Dimensions2

SIZEABCEFHdbfLDD1D2D3n-M
DFA35-500DA21912-157422613512032134.913053040028035012-M24
DFA40-600DA22286-196512618516040178.813063050035045012-M27
DFA35-700S28201869157422613512032134.913079640028035012-M24
DFA40-800S35622419196512618516040178.813091050035045012-M27


*Dimensions above was just suitable for Spring Return type model from DFA35-700S to DFA40-800S, and Double Cylinder Double Acting type model from DFA35-500DA2 to DFA40-600DA2.

④Stroke Time&Air Consumption

Double Acting Actuator / Air Consumption
Model  

Cylinder   size/mm

Travel / mm

Dia of piston  rod/mm

One-stroke

 time/sec.

Air Consumption(L/min)

Air Consumption

 per open/L

Air Consumption  per close/L

Air Consumption   per cycle(L)

DFA16-300DA3001793220155.614.0611.2225.28
DFA16-350DA3591793220222.820.1416.7136.85
DFA25-350DA3592143820266.423.6819.6543.33
DFA25-400DA4102143820347.530.8926.2557.14
DFA25-450DA4502143820418.637.2132.1169.32
DFA30-450DA4502624520512.544.8538.6983.54
DFA30-500DA5002624520632.755.3748.5103.87
DFA30-550DA540262452073864.5857.15121.73
DFA35-550DA5403425520963.482.973.37156.27
DFA35-600DA60034255201189.3102.3591.72194.07
DFA35-700DA70034255201618.8139.31126.86266.17


Spring return Actuator / Air Consumption
Model

Cylinder

 size/mm

Travel 

/ mm

Dia of piston

 rod/mm

One-stroke

 time/sec.

Air Consumption

(L/min)

Air Consumption

 per open/L

Air Consumption 

per cycle(L)

DFA16-350-S4/53591793220222.816.7116.71
DFA25-400-S4/54102143820347.526.2526.25
DFA30-550-S4/5540262452073857.1557.15
DFA35-600-S4/560034255201189.391.7291.72
DFA16-300-S63001743220151.210.9410.94
DFA25-350-S5/63592143820266.419.6519.65
DFA30-500-S5/65002624520632.748.548.5
DFA35-550-S5/65403425520963.473.3773.37


Metric Unit:mm

Metric Unit:mm

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