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  • 4 Piston Pneumatic Actuator

4 Piston Pneumatic Actuator

4 Piston pneumatic actuator from Hugo valve is a quater turn pneumatic actuator with four pistons,doubled the torque comparing with common pneumatic actuator designs, 4 piston pneumatic actuator is compact in size and energy efficient, gives maximum torque for minimum air consumption


Patented solenoid valve are going to provide, which will increase 4 piston pneumatic actuator's output torque under same input air pressure

 

Description  

4 piston pneumatic actuator is a quater turn pneumatic actuator with four pistons,  offers an air-to air 4-piston rack and pinion design, doubled the torque comparing with single or double rack & pinion actuator designs, 4 piston pneumatic actuator gives maximum torque for minimum air consumption, it is both compact in size and energy efficient, space saving and fast acting.

 

1, Four piston design which doubled the torque around a centrally located pinion, the rotation axis (pinion) diameter reduced and high torque remained, this allows the overall size of the 4 piston pneumatic actuator to be reduced and become more compact.

2, The each piston thrust along it’s own axis instead of off-axis thrust because of the cube structure, piston side loading caused by off-axis thrust will not appear, which makes the stress on the seals reduced sharply.

3, 4 piston pneumatic actuators have four small-sized cylinders on four cube sides respectively, can generate same torque output, but the piston and pinion diameter used are very small and narrow, the narrow pinion makes the piston travel shorted, all those result in compact structure and space saving, moreover fasted the acting travel.

4, 4 piston pneumatic actuator can contain three different-sized spring in four spring chambers, the spring nested between the pistons and actuator covers, calibrated by centering rings, which can meet the requirements for any air supply pressure.

5, Compact 4 piston pneumatic actuator have uniform load distribution which reduced the gear wear between rack and pinion.

6, There is a double square female drive on the pinion bottom to meet ISO 5211 or DIN337 coupling options.

 

Principle of operation 

1, Double acting

 Pressure entering port A to open :

 Center chamber pressurized, piston move outward, pinion rotated counter clockwise

 Pressure entering port B to close :

 Outside chambers pressurized, piston move inward, pinion rotates clockwise

2, Spring return

 Pressure entering port A to open :

 Center chamber pressurized, piston move outward, springs are compressed, pinion rotates counter clockwise.

 Pressure exiting port A to close :

 Air released from center chamber, spring drive pistons inward, pinion rotates clockwise.

 

Main Characteristics

1, PROVEN ADVANTAGE    Compact 4 piston quarter turn rack & pinion actuator is a quarter turn rack & pinion pneumatic actuator that is patented worldwide, the superiority of the actuator over single and double rack & pinion actuator designs, results from the four pistons which generate torque around a centrally located pinion, thereby giving more than double the torque achieved by these other designs, the increased number of pistons in the actuator allows their diameter to be reduced while maintaining its high torque.this also allows the overall size of the actuator to be reduced and become more compact

 

2, SUPERIOR CORROSION RESISTANCE  The body and covers are anodized internally and externally, providing protection against ingress of corrosive atmosphere. An external epoxy base layer and a second polyurethane paint provides additional protection against aggressive environments, optional electroless nickel coating of body,covers & stop                                

 

3, BALANCED FORCES  The cube-shaped configuration of the actuator positions the pistons so that each piston develops thrust along its own axis, rather than the off-axis thrust, that results from the geometry of most other actuator configurations, piston side loading, caused by off-axis thrust,does not occur, thus resulting in less stress on the seats.

 

4, NESTED SPRINGS    4X4 4 piston pneumatic actuator's four-spring chambers can use up to three different sizes, which are nested between the covers and pistons and are aligned by centering rings, each spring is wound in the opposite direction to it's neighbor to avoid entanglement,as there are four cylinders, there are many more spring combination possibilities than with double piston actuators. this results in better solutions for any air supply pressure required, special painting of the springs provides higher corrosion resistance to the environment,giving more than 250 hours of life in a salt spray bath.

 

5, SPACE SAVING & FAST ACTING  The actuator has four small cylinders, each located on one of the four sides of a cube,at a given air pressure, the actuator can produce the same torque output as double piston actuators, using smaller diameter pistons and a narrower pinion, a narrower pinion results in a shorter piston travel, which permits a compact,space saving mechanism and fact acting travel from one position to the nest.

 

6, LESS AIR CONSUMPTION  The four piston pneumatic actuator gives maximum torque for minimum air consumption, it is both compact in size and energy efficient, creating a fast-responding, trouble-free,high cycle lifespan. the cube shape of the actuator and the short piston travel serve to minimize excess space, this is space which is not swept by piston travel and which must be pressurized before the piston motion begins, therefore,reducing the pressurization of excess space and resulting in reduced energy requirements.

 

Actuator Dimensions

4 piston pneumatic actuator dimension

 

 

Size

A (SR,DA)

C

D

E

F

G

H

K

L

T

M

T2

X

Y

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

15

113

70.7

52.2

66.5

12.5

13.4

20

9

50

M6*8

70

M8*11

need bracket

20

132.5

82.5

63.4

77.2

16

16

20

11

50

M6*8

70

M8*11

80

30

25

162

97.6

77

90

20.7

19.5

20

14

70

M8*11

102

M10*14

80

30

30

186

117

93.7

105.5

22.5

23

20

17

70

M8*11

102

M10*14

80

30

35

224

136

104.7

122

23

27

20

22

102

M10*14

 

 

80

30

45

272.6

164.5

128.5

146

34.5

33

20

27

102

M10*14

125

M12*18

80

30

60

361

218

180

141.5

93.5

43

30

36

140

M16*24

 

 

130

30

75

433

268

222

166

110

43

30

36

160

M20*30

 

 

130

30