Air Cylinders Model Selection - SMC株式会社ca01.smcworld.com/catalog/BEST-Guide-en/pdf/2-m27-49_en.pdf · Air Cylinders Model Selection Series MB Series CJ2 Series CM2 Series

Air Cylinders Model Selection

Series MB

Series CJ2

Series CM2

Series CG1

Series CA2

Series CS2

Series CS1

Series CQ2

2 Best Pneumatics

Step

q Determine the load factor in accordance with the purpose.

0.7 or less(70% or less)

1 or less(100% or less)

Technical data for air cylinders

1

Step

2

Step

Step

3

4For detailed technical data other than the air cylinder model

selection, refer to pages 1819 to 1827.

Data 1: Bore Size Selection (page 1820)

Data 2: Air Consumption and Required Air Volume (page 1824)

Data 3: Theoretical Output Table (page 1825)

Data 4: Condensation (page 1827)

Take the impact at the stroke end into consideration.

The aspects indicated below may need to be taken into consideration, depending on how the cylinder is operated.

Obtain the cylinder’s air consumption and its required air volume.

Obtain the bore of the cylinder tube. → Refer to Graph (1) and (2).

0.5 or less(50% or less)

Note)

Purpose of operation

Static operation (Clamping, Low-speed vise crimping, etc.)

Dynamicoperation

Horizontal movement of load on guide

Vertical and horizontal movement of the load

Load factor η

Note) If it is particularly necessary to operate at high speeds, the load rate must be reduced further. (In the graph, it is possible to select a load rate of 0.4, 0.3, 0.2, or less.)

w Determine the operating pressure.Generally, set the regulator to 85% of the source air pressure. (In the graph, a selection between 0.2 MPa and 0.8 MPa is possible.)

e Determine the direction in which the cylinder force will be used.Extending side → Refer to Graph (1).Retracting side → Refer to Graph (2).

Note) If the same load is applied both for pushing and pulling in a horizontal operation, set the direction to the retracting side.

q When an external stopper (shock absorber, etc.) is provided to absorb the impact, select a stopper with sufficient absorption capacity.

w Stopping the piston with the cylinder without a stopper: Verify in Graphs (3) to (10) the absorption capacity of the cushion that is enclosed in the cylinder.1) Rubber bumper ······ Urethane rubber is used for preventing metal-

to-metal contact between the pison and the cover.

2) Air cushion ············ The air in the exhaust side is compressed slightly before the stroke end, and its reaction force absorbs the kinetic energy of the load, thus enabling the piston to stop quietly.

q If a lateral load is applied to the piston rod: Verify in Graphs (11) to (19) whether the lateral load is within an allowable range.

w When using a cylinder with a relatively long stroke, if a buckling force acts on the piston rod or the cylinder tube, verify in the table whether the stroke or the operating pressure is within a safe range.

Obtain the air consumption selecting a compressor and for calculating the running cost and the required (Graphs (21), (22)) that is necessary for selecting a compressor and for calculating the running cost and the required air volume (Graph (23)) that is necessary for selecting equipment such as an air filter or a regulator, or the size of the piping upstream.

Front matter 27


600005000040000

300002500020000

15000

10000

50004000

300025002000

1500

1000

500400

300250200

150

100

5040

302520

15

10

54

32.5

2

1.5

10.80.8

0.70.6

0.50.4

0.3

0.2

600050004000

300025002000

1500

1000

500400

300250200

150

100

5040

302520

15

10

54

32.52

1.5

1

0.50.4

0.30.250.2

0.15

0.10.08

300250200180160140125100

80

63

50

40

32

25

20

16

10

6

300250200180160140125100

80

63

50

40

32

25

20

16

10

6

1 0.7 0.5 0.4 0.3 0.2

600005000040000

300002500020000

15000

10000

50004000

300025002000

1500

1000

500400

300250200

150

100

5040

302520

15

10

54

32.5

2

1.5

10.8

0.70.6

0.50.4

0.3

0.2

600050004000

300025002000

1500

1000

500400

300250200

150

100

5040

302520

15

10

54

32.52

1.5

1

0.50.4

0.30.250.2

0.15

0.1

300250200180160140125100

80

63

50

40

3225

20

16

10

6

300250200180160140125100

80

63

50

40

3225

20

16

10

6

1 0.7 0.5 0.4 0.3 0.2

2 Best Pneumatics

Obtain the bore of the cylinder tube. → Refer to Graph (1) and (2).

1 MPa ≈ 10.2 kgf/cm2 1 N ≈ 0.102 kgf1 kgf/cm2 ≈ 0.098 MPa 1 kgf ≈ 9.8 N

Step

1

P = 0 .4 MPa

W

Fig. (2)

30 kgP = 0.5 MPa

Fig. (3)

W

100 kgFig. (1)

P = 0.5 MPa(Example) (Example)

Bore size (mm)Bore size (mm)

Conversion to gravitational units

Example 1: If the minimum force of 1000 N is necessary to keep the workpiece pressed as shown in Fig. (1), because this is the extending side, use Graph (1) to determine the load factor of 0.7 and the operating pressure of 0.5 MPa. Then, seek the point at which the cylinder force of 1000 N intersects, and this will result in a bore size of 63 mm.

Example 2: To move a load with a 30 kg mass horizontally on a guide as shown in Fig. (2), because the load is the same for both the extending and retracting sides, use Graph (2), which is the retracting side with a smaller force. Determine the load factor of 1, and the operating pressure of 0.4 MPa. Then, seek the point at which it intersects with the load mass of 30 kg, and this will result in a bore size of 40 mm.

Example 3: To pull a load with a 100 kg mass vertically upward as shown in Fig. (3), use Graph (2) to determine the load factor of 0.5 and the operating pressure of 0.5 MPa. Then, seek the point at which it intersects with the load mass of 100 kg, and this will result in a bore size of 80 mm.

Graph (2)Retracting Side Cylinder Force (Double acting cylinder)

Graph (1)Extending Side Cylinder Force (Double acting cylinder)

Cyl

inde

r fo

rce

F (

N)

Ope

ratin

g pr

essu

re (

MP

a)

Load

mas

s m

(kg

)

Cyl

inde

r fo

rce

F (

N)

Ope

ratin

g pr

essu

re (

MP

a)

Load

mas

s m

(kg

)

Load factor (η) Load factor (η)

Front matter 28


CJ2

CM2

CG1

CA2

CS1

200

100

50

30

20

10

5

3

2

1

0.4

0.3

0.2

100 200 300 500 1000

1000

500

300

200

100

50

30

20

10

5

3

2

1

0.5

10000

5000

3000

2000

1000

500

300

200

100

50

30

20

10

5

100 200 300 500 1000100 200 300 500 1000


How to Read the Graph

Cylinders with Air Cushion

Step

2

Load

mas

s (k

g)

Max. speed (mm/s)

Graph (3) Series CJ2/CM2 Graph (4) Series CG1 Graph (5) Series CA2/CS1

CM240

CM232

CM225

CM220

CJ216

CJ210

Load

mas

s (k

g)

Max. speed (mm/s)

Load

mas

s (k

g)

Max. speed (mm/s)

CS1300

CS1250

CS1200CS1180

CS1160

CS1140

CS1125

CA2100

CA280

CA263

CA250

CA240

Example 1: According to Graph (3), to move a load mass of 50 kg using a cylinder with an air cushion, CM240, it is necessary to set the maximum speed at 300 mm/s or less, considering the capacity of the air cushion.

CG1100

CG180

CG163

CG150

CG140

CG132

CG125

CG120

Front matter 29


CG1

1000

500

300

200

100

50

30

20

10

5

3

2

1

0.5

100 200 300 500 1000

MB

1000

500

300

200

100

50

30

20

10

5

4

3

2

100 200 300 500 1000 2000

CJ2

CM2

200

100

50

30

20

10

5

3

2

1

0.4

0.3

0.2

0.1

0.05

100 200 300 500 750 1000

2 Best Pneumatics

Cylinders with Air Cushion Cylinders with Rubber Bumper

Load

mas

s (k

g)

Max. speed (mm/s)

Load

mas

s (k

g)

Max. speed (mm/s)

Graph (6) Series MB

Load

mas

s (k

g)

Max. speed (mm/s)

Graph (7) Series CJ2/CM2 Graph (8) Series CG1


Step

2

How to Read the GraphExample 2: According to Graph (8), to move a load mass of 50 kg at a maximum speed of 500 mm/s, in the Series CG1, a bore

size of ø80 can be selected.

CG1100

CG180

CG163

CG150

CG140

CG132

CG125

CG120

MB100

MB80

MB63

MB50

MB40

MB32

CM240

CM232

CM225

CM220

CJ216

CJ210

CJ26

Front matter 30


CQSCQ2CQSCQ2

0.1

0.2

0.3

0.5

1

2

3

5

10

20

30

50

100

200

300

500

1000

100 100050 500200 3000.1

0.2

0.3

0.5

1

2

3

5

10

20

30

50

100

200

300

500

1000

100 100050 500200 300

Cylinders without Rubber BumperCylinders with Rubber Bumper

Graph (10) Series CQ2/CQSGraph (9) Series CQ2/CQS

Load

mas

s (k

g)

Max. speed (mm/s)

CQ225/CQS25

CQ220/CQS20

CQ216/CQS16

CQ212/CQS12

CQ232

CQ240

CQ250

CQ263

CQ280

CQ2100

Load

mas

s (k

g)

Max. speed (mm/s)

CQ225/CQS25

CQ220/CQS20

CQ216/CQS16

CQ212/CQS12

CQ232

CQ240

CQ250

CQ263

CQ280

CQ2100

Front matter 31


200

100

5040

30

20

10

54

3

2

1

300

0 500 1000 1500

MB100 · CA2100 MB80 · CA280 MB63 · CA263 MB50 · CA250 MB40 · CA240 MB32

10.00

1.00

0.10

0.010 15 30 45 60 75 100 125 150 175 200 250 300 350 400

5040

30

20

10

54

3

2

1

0.50.4

0.30 100 200 300 400 500 600 700 800 900 1000

CM240

CM232

CM225 CM220

200

100

504030

20

10

543

2

1

0.50.40.3

0.2

0.1

300

0 500 1000 1500

CG1100 CG180

CG163 CG150

CG132

CG120

CG125

CG140

CJ210

CJ26

CJ216

2 Best Pneumatics

q The maximum stroke at which the cylinder can be operated under a lateral load.The region that does not exceed the bold solid line represents the allowable lateral load in relation to the cylinder of a given stroke length. In the graph, the range of the broken line shows that the long stroke limit has been exceeded. In this region, as a rule, operate the cylinder by providing a guide along the direction of movement.

Graph (14)Series MB: ø32, ø40, ø50, ø63, ø80, ø100Series CA2: ø40, ø50, ø63, ø80, ø100

Late

ral l

oad

appl

ied

to th

e ro

d en

d fR

(N

)

Cylinder stroke (mm)

Graph (11)Series CJ2: ø6, ø10, ø16


Graph (12)Series CM2: ø20, ø25, ø32, ø40

Late

ral l

oad

appl

ied

to th

e ro

d en

d fR

(N

)


Graph (13)Series CG1: ø20, ø25, ø32, ø40, ø50, ø63, ø80, ø100


The aspects indicated below may need to be taken into consideration, depending on how the

Step

3

Late

ral l

oad

appl

ied

to th

e ro

d en

d fR

(N

)La

tera

l loa

d ap

plie

d to

the

rod

end

fR (

N)

Bushing (Bearing)fR

Front matter 32


2000

1000

500400

300

200

100

5040

30

20

10

3000

0 500 1000 1500 2000 2400

CS1300 CS1250

CS1125

CS1140

CS180 CS1160

10 20 30 40 500

1

10

20

0.5

0.1

2

3

4

5

1

10

20

0.5

0.1

2

3

4

5CQS25

CQS20

CQS12

10 20 30 40 500

200

100

504030

20

10

5.04.03.0

2.0

1.0

0.50.40.3

0.2

0.1

300

0 50 100

CQ2100

CQ280

CQ263

CQ250 CQ240 CQ232 CQ225

CQ220 CQ216 CQ212 1.0

0.50.40.3

0.2

0.1

200

100

504030

20

10

5.04.03.0

2.0

300

0 50 100

CDQ2100

CDQ280

CDQ263

CDQ250 CDQ240 CDQ232

CDQ225 CDQ220 CDQ216

CDQ212

CDQS12

CDQS20 CDQS16

CDQS25

CQS16

Graph (15)Series CS1: ø125, ø140, ø160, ø180, ø200, ø250, ø300

Graph (16)Series CQS: ø12, ø16, ø20, ø25

Graph (17)Series CDQS: ø12, ø16, ø20, ø25

Graph (18)Series CQ2: ø12, ø16, ø20, ø25, ø32, ø40, ø50, ø63, ø80, ø100

Graph (19)Series CDQ2: ø12, ø16, ø20, ø25, ø32, ø40, ø50, ø63, ø80, ø100

cylinder is operated.

Late

ral l

oad

appl

ied

to th

e ro

d en

d fR

(N

)La

tera

l loa

d ap

plie

d to

the

rod

end

fR (

N)

Late

ral l

oad

appl

ied

to th

e ro

d en

d fR

(N

)

Cylinder stroke (mm)Cylinder stroke (mm)

(Single rod/without switch)Cylinder stroke (mm)

(Single rod/without switch)

Cylinder stroke (mm)(Single rod/without switch)

Cylinder stroke (mm)(Single rod/without switch)

Late

ral l

oad

appl

ied

to th

e ro

d en

d fR

(N

)La

tera

l loa

d ap

plie

d to

the

rod

end

fR (

N)

Front matter 33


P

W W W

WW W

W W

W

W

WWW

W W

W

W W

WW

2 Best Pneumatics

20 25 32 40 20 25 32 40 50 63 80 100

L

F

G

C

D

U

T

L

F

G

L

F

G

Mounting style Maximum stroke that can be used according to buckling strength

CM2 CG1Mounting bracketdiagram

Foot: L Rod sideflange: F

Head sideflange: G


Head sideflange: G


Head sideflange: G

Clevis:C, D

Rod sidetrunnion: U

Centertrunnion: T

Head sidetrunnion: T

Series CA1, CS1 only

(cm)

0.3

0.5

0.7

39

29

24

49

37

31

56

42

35

61

46

38

38

29

24

49

36

30

55

42

34

80

60

50

100

76

63

78

59

49

96

73

60

112

85

71

0.3

0.5

0.7

16

11

8

20

14

11

24

17

13

25

17

13

15

11

8

21

14

11

24

17

13

36

26

21

45

33

27

34

25

20

42

31

24

50

37

29

0.3

0.5

0.7

36

26

21

46

34

28

53

39

32

56

42

34

37

27

22

47

35

28

53

40

32

78

59

48

98

74

61

76

57

46

94

70

58

109

82

68

0.3

0.5

0.7

82

62

52

103

79

66

116

89

75

126

97

81

81

61

51

102

78

65

115

88

73

150

126

106

150

159

133

150

124

104

– –

– –

– –

– –

– –

– –

0.3

0.5

0.7

37

27

22

47

35

29

54

40

33

58

43

35

38

28

23

48

36

30

55

41

34

79

60

50

100

76

63

78

59

48

0.3

0.5

0.7

100

90

76

147

113

95

166

128

107

181

139

117

117

89

75

147

112

94

150

127

107

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

0.3

0.5

0.7

55

41

34

69

52

43

79

60

49

85

64

53

55

41

34

70

52

43

79

60

50

114

87

72

143

109

91

112

85

71

138

105

87

150

122

102

0.3

0.5

0.7

100

100

100

150

150

136

200

183

154

200

199

167

150

128

108

150

150

135

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

0.3

0.5

0.7

80

61

50

101

77

64

114

87

72

123

94

78

80

61

50

101

77

64

114

87

73

150

126

105

150

150

132

150

124

103

150

150

127

150

150

148

6 10 16

B

L

F

D

B

L

F

B

L

F

Mounting style Maximum stroke that can be usedaccording to buckling strength

CJ2Mounting bracketdiagram




Clevis:C, D

(cm)

0.2

0.3

0.5

0.7

0.2

0.3

0.5

0.7

0.2

0.3

0.5

0.7

0.2

0.3

0.5

0.7

20

20

16

13

—

—

—

—

20

20

20

20

20

20

20

20

29

23

17

14

40

40

32

26

40

40

40

40

40

40

40

40

29

23

17

14

40

40

31

25

40

40

40

40

40

40

40

40

Nom

inal

sym

bol

Ope

ratin

gpr

essu

re

(MPa) Nom

inal

sym

bol

Ope

ratin

gpr

essu

re

(MPa)

w The relation between the cylinder size and the maximum stroke depending on the mounting style.

The aspects indicated below may need to be taken into consideration, depending on how the

Step

3

Assuming that the force that is generated by the cylinder itself acts as a buckling force on the piston rod or on the piston rod and the cylinder tube, the table below indicates in centimeters the maximum stroke that can be used, which was obtained through calculation. Therefore, it is possible to find the maximum stroke that can be used with each cylinder size according to the relationship between the level of the operating pressure and the type of cylinder mounting, regardless of the load factor.

Reference: Even under a light load, if the piston rod has been stopped by an external stopper at the extending side of the cylinder, the maximum force generated by the cylinder will act upon the cylinder itself.

Front matter 34


W W W

WW W

W W

W

WWW

W

L

F

G

C D

U

T

L

F

G

L

F

G


Head sideflange: G


Head sideflange: G


Head sideflange: G

Clevis:C, D

Rod sidetrunnion: U

Centertrunnion: T

Head sidetrunnion: T

Series CA1, CS1, CS2 only

(cm)

0.3

0.5

0.7

0.3

0.5

0.7

0.3

0.5

0.7

0.3

0.5

0.7

0.3

0.5

0.7

0.3

0.5

0.7

0.3

0.5

0.7

0.3

0.5

0.7

0.3

0.5

0.7

32 40 50 63 80 100 125 140 160 180 200 250 300

MB MB, CA2 CS1 CS2

71

56

46

81

63

52

102

78

65

79

61

50

98

75

62

114

88

73

131

101

84

117

89

74

126

96

80

141

108

89

158

121

101

182

140

115

206

125 140 160

158

131

31

23

19

35

26

21

46

34

27

34

25

19

42

31

24

50

37

29

57

42

34

49

35

28

53

38

30

60

44

34

68

50

40

79

58

45

90

66

53

67

50

41

76

57

46

96

72

60

73

54

44

91

68

55

105

78

64

122

91

75

106

78

64

118

85

69

130

96

78

146

109

89

167

124

101

190

141

115

– – – – – – – – – – – – –

– – – – – – – – – – – – –

– – – – – – – – – – – – –

93

71

58

105

80

66

134

102

85

103

78

65

128

97

81

149

113

93

171

129

107

151

113

94

163

123

101

183

139

115

206

156

129

235

178

147

267

203

168

206

158

132

234

179

150

295

226

190

231

177

148

287

219

184

330

253

212

382

293

245

339

263

218

366

281

235

412

315

265

459

252

296

527

403

339

598

458

385

99

75

62

112

85

70

142

108

90

116

83

68

136

102

85

158

119

99

183

138

114

160

120

99

173

131

108

196

147

122

218

165

137

251

189

157

286

216

179

280

234

194

318

266

220

423

339

275

313

257

216

412

317

267

476

367

309

549

423

356

489

377

317

528

407

343

594

457

385

661

509

429

762

587

494

863

665

561

136

110

93

154

125

105

206

158

132

151

123

102

199

152

127

231

176

147

266

203

170

235

179

149

254

194

144

287

218

182

320

244

204

369

281

235

419

320

268

103

79

66

45

33

26

96

71

59

–

–

–

135

101

84

301

231

193

144

109

90

433

334

281

210

160

134

92

70

58

38

27

22

83

61

50

–

–

–

119

89

74

267

207

172

126

94

78

386

297

250

185

141

117

113

86

72

47

34

27

106

76

62

–

–

–

147

111

91

330

253

212

156

118

97

476

367

309

229

175

129

cylinder is operated.

Mounting style Maximum stroke that can be used according to buckling strength

Mounting bracketdiagram

Nom

inal

sym

bol

Ope

ratin

gpr

essu

re

(MPa)

Front matter 35


20001500

1000

500400300

200150

100

504030

2015

10

54

3

2

1.5

1

0.6

500040003000

20001500

1000

500400300

200150

100

50

300020001500

1000

500400300

200150

100

504030

2015

10

54

3

2

1.5

1

0.50.40.3

0.20.15

0.1

0.050.040.03

0.020.015

0.01

3000

0.20.3

0.40.5

0.60.70.8

300250200180160140125100

8063

504032

25

2016

10

6

300250200180160140125100

8063

504032

25

2016

10

6

2 Best Pneumatics

How to Obtain the Air Consumption/How to Read Graphs (20), (21)

How to Obtain the Required Air Volume/How to Read Graph (22)

In equipment that used a cylinder, air consumption is the volume of air that is consumed in the cylinder, or in the piping between the cylinder and the switching valve, every time the switching valve operates.This is necessary for selecting a compressor and for calculating the running cost. The required air volume is the volume of air that is necessry for operating a specified load at a specified speed, and it is necessary for selecting the F.R.L equipment or the size of the upstream piping.

Obtain the cylinder’s air consumption and its required air volume.

Step

4

Cylinder’s air consumption and its required air volume.

Step 1

Step 2

Step 3

Step 3

Graph (20)Cylinder’s Air Consumption (For one cycle)

Air

cons

umpt

ion

(L (

AN

R))

Cyl

inde

r st

roke

(m

m)

Air

cons

umpt

ion

(L (

AN

R))

Operating pressure (MPa)

Bore size (mm)

Note) In selecting a compressor, the temperature drop, leakage, and consumption by the intermediary equipment must be taken into consideration. Thus, select one with a generous capacity, with a discharge that exceeds the total air consumption indicated above. (Reference: At a minimum, select one with 1.4 times the volume; select one with a higher volume as needed.)

Example: When 10 air cylinders with a 50 mm bore size and a 600 mm stroke are used at a pressure of 0.5 MPa, what is the air consumption of their 5 cycles per minute? (A 2 m tube with a 6 mm bore is used for piping between the cylinders and the switching valve.)

By using Graph (20), obtain the air consumption of the air cylinder.q Seek the point at which the operating pressure (diagonal

line) intersects with the cylinder stroke, and from that point, perpendicularly extend a vertical line upward.

w From the point at which it intersects with the bore size (diagonal line) of the cylinder to be used, look sideways (eithr to the right or left) to obtain the air consumption that is required by one cycle of the air cylinder.

Obtain the total air consumption per minute as described below.(Air consumption of air cylinder + Air consumption of tube or steel pipe) x Number of cycles per minute x Number of cylinders being used = Total air consumption [Unit: L/min (ANR)]

By using Graph (21), obtain the air consumption of the tube or steel pipe in the same way as in Step 1.

By using Graph (22), obtain the air cylinder’s required air volume.q Seek the point at which the operating pressure (diagonal

line) intersects with the cylinder stroke, and from that point, perpendicularly extend a vertical line upward.

w From the point at which it intersects with the bore size (diagonal line) of the cylinder to be used, look sideways (eithr to the right or left) to obtain the air consumption that is required by one cycle of the air cylinder.

Example: What is the required air volume for operating a cylinder with a bore size of 50 mm, at pressure of 0.5 MPa, and at a speed of 500 mm/s?

How to read: Operating pressure 0.5 MPa → Maximum piston speed 500 mm/s → Bore size 50 mm → Then, a required air volume 350 L/min (ANR) can be obtained.

1. Operating pressure 0.5 MPa → Cylinder stroke 600 mm → Bore size 50 mm → Air consumption ≈ 13 L (ANR)

2. Operating pressure 0.5 MPa → Piping length 2 m → Bore 6 mm → Air consumption ≈ 0.56 L (ANR)

3. Total air consumption = (13 + 0.56) x 10 x 5 = 678 L/min (ANR)

Front matter 36


100

50

40

30

20

10

5

4

3

2

1

0.5

0.4

0.3

0.2

10

54

3

2

1.5

1

0.50.4

0.3

100

50

40

30

20

10

5

4

3

2

1

0.5

0.4

0.3

0.2

0.1

0.05

0.04

0.03

0.02

0.01

0.005

0.20.3

0.40.5

0.60.7

0.81�

3/4�1/2�

128

7.52.5

65

4

133/8

1/4�

9

20000

15000

10000

50004000

3000

2000

1500

1000

500400

300

200

150

100

5040

30

20

15

108

2000

1500

1000

500400

300

200

100

30000

20000

15000

10000

50004000

3000

2000

1500

1000

500400

300

200

150

100

5040

30

20

15

10

54

3

2

1

0.5

30000

0.2

0.3

0.4

0.5

0.6

0.7

0.8

180160140125100

80

63

50

40

32

25

20

16

10

6

200

250

300

Air

cons

umpt

ion

(L (

AN

R))

Air

cons

umpt

ion

(L (

AN

R))

Pip

ing

leng

th (

m)


Graph (21) Air Consumption of Tube or Steel Pipe (For one cycle)

Bore size (mm)

Bore size (mm)

Req

uire

d ai

r vo

lum

e (L

/min

(A

NR

))

Req

uire

d ai

r vo

lum

e (L

/min

(A

NR

))

Max

. pis

ton

spee

d (m

m/s

)

Graph (22) Required Air Volume of Cylinder and Piping

∗ The piping length is the length of the steel pipe or tube that connects the cylinder with the switching valve (solenoid valve, etc.)∗ For the dimensions (bore size and O.D.) of the steel tubing, refer to page 1824.


Front matter 37

2 Best Pneumatics

Air Cylinders’ Drive System

Full Stroke Time & Stroke End VelocityHow to Read the Graph

This graph shows the full stroke time and stroke end velocity when a cylinder drive system is composed of the most suitable equipment.As the graph shown below, various load ratio and full stroke time which corresponds to stroke and terminal velocity are indicated for every cylinder bore size.

When the cylinder bore size is ø, its stroke is L , and load ratio is d%, full stroke time t is obtainted, as an arrow mark q, by reading the value on the abscissa over the point at which the ordinate L hits the full stroke line (red line) of d%. Terminal velocity u is obtained, as an arrow mark w, by reading the value on the abscissa below the point at which the ordinate L hits the terminal velocity line (blue line) of d%.

Pressure

Cylinder orientation

Speed controller

Load factor

Piping length

0.5 MPa

Series CJ2, Series CM2, Series CQ2

Series MB, Series CQ2

Series CS1, Series CS2

Vertically upward

Meter-out, connected with cylinder directly, needle fully opened

((Load mass x 9.8)/Theoretical output) x 100%

1 m

2 m

3 m

Conditions

Example

ø Full stroke time (t )

Stroke end velocity (u )

Str

oke

(L)

Full stroke time

Stroke

Speed

Time (sec)

(mm)

SOL. ON OFF

Str

oke

Str

oke

end

ve

loci

ty

q

w

d % d %

Front matter 38

Air Cylinders’ Drive System Full Stroke Time & Stroke End Velocity

Glossary of Terms: Cylinder’s Motion Characteristics

(1) Piston start-up time It is the time between the solenoid valve is energized (de-energized) and the piston (rod) of a cylinder starts traveling. The accurate judgement is done by the start-up of acceleration curve.

(2) Full stroke timeIt is the time between the solenoid valve is energized (de-energized) and the piston (rod) of a cylinder is reached at the stroke end.

(3) 90% force timeIt is the time between the solenoid valve is energized (de-energized) and the cylinder output is reached at 90% of the theoretical output.

(4) Mean velocityValues which devided stroke by “full stroke time”. In the sequence or diaphragm, it is used as a substituting expression for “full stroke time”.

(5) Max. velocityIt is the maximum values of the piston velocity which occurs during the stroke. In the case of Graph (1), it will be the same values as “stroke end velocity”. Like Graph (2), when lurching or stick-slipping occurs, it shows substantially larger values.

(6) Stroke end velocityIt is the piston velocity when the piston (rod) of a cylinder is reached at the stroke end. In the case of a cylinder with adjustable cushion, it says the piston velocity at the cushion entrance. It is used for judging the cushion capability and selecting the buffer mechanism.

(7) Impact velocityIt is the piston velocity when the piston (rod) of a cylinder is collided with the external stopper at the stroke end or arbitrary position. (Reference)Balancing velocity: If a cylinder having enough longer stroke is driven by meter-out, the latter half of a stroke will be in an uniform motion. Regardless of the supply pressure or a load, the piston speed for this time will be dependent only on the effective area S [mm2] of the exhaust circuit and the piston area A [mm2] . Balancing velocity = 1.9 x 105 x (S/A) [mm/s] is estimated with this formula.

Full stroke time

Pistonstart-up time Acceleration

Speed

Time

0

0

90% force time

Exhaust chamber pressure

Supply chamberpressure

Stroke

Graph (1)

Note) These definitions are harmonized with SMC “Model Selection Software”.

Str

oke

end

velo

city

Full stroke time

Piston start-up time

Acceleration

Speed

Time

0

0

0

Max. speed

90% force timeExhaust chamber

pressure

Supply chamberpressure

Stroke

Graph (2)

Stro

ke e

nd

velo

city

Front matter 39

2 Best Pneumatics


Full Stroke Time & Stroke End VelocitySeries CJ2/Bore size: ø6, ø10, ø16

Full stroke time (sec)

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

60

45

30

15

0

100

75

50

25

0

100

75

50

25

0

10% 30% 50% 70%

70%

50%

30%

10%

ø6

ø10

ø16

Stroke end velocity (mm/s)

0 100 200 300 400 500 600 700 800 900 1000

For details corresponding to each various condition, make the use of “Model Selection Software” on SMC website for your decision.

Str

oke

(mm

)S

trok

e (m

m)

Str

oke

(mm

)

Applicable model

Silencer TubingSpeed

controllerSolenoid valve

(2 position)

AN120-M5

AN120-M3

TU0425

AS1201F-M5-04

AS1200-M5

SY3120-M5SYJ3120-M3VQD1121-M5

AN120-M5 TU0425

AS1201F-M5-04

AS1200-M5

SY3120-M5SYJ512-M5VQZ1120-M5

AN120-M5

TU0425

AS1201F-M5-04

AS1200-M5

SY3120-M5SYJ512-M5VQZ1120-M5

Applicable model



(2 position)

This graph shows the full stroke time and stroke end velocity when a cylinder drive system is composed of the most suitable equipment.As the graph shown at right, various load ratio and full stroke time which corresponds to stroke and terminal velocity are indicated for every cylinder bore size.

Pressure

Piping length


Speed controller

Load factor

0.5 MPa

1 m

Vertically upward



ConditionsHow to Read the GraphHow to Read the GraphHow to Read the Graph

Front matter 40


Series CM2/Bore size: ø20, ø25, ø32, ø40Applicable model


0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0


0 100 200 300 400 500 600 700 800 900 1000

200

150

100

50

0



(2 position)

Applicable model



(2 position)

AN120-M5

TU0425

AS2201F-01-04

AS2200-01

SY3120-M5SYJ5120-M5VQ1160-M5

AN120-M5

TU0425

AS2201F-01-04

AS2200-01

SY3120-M5SYJ5120-M5VQ1160-M5

ANB1-01

AN101-01

TU0604

AS2201F-01-06

AS2200-01

SY5120-01SX5120-01

ANB1-01

AN101-01

TU0604

AS2201F-02-06

AS2200-02

SY5120-01SX5120-01

Str

oke

(mm

)

200

150

100

50

0

Str

oke

(mm

)

200

150

100

50

0

Str

oke

(mm

)

200

150

100

50

0S

trok

e (m

m)

10% 30% 50% 70%ø20

ø25

ø32

ø40

10%

30%50%70%



Example


Stroke end velocity (u)

q

w

d% d%

Full stroke time

Stroke

Speed

Time (sec)SOL

ONOFF

Str

oke

( L)

Str

oke

(mm

)

Str

oke

end

velo

city

Front matter 41

2 Best Pneumatics


Full Stroke Time & Stroke End VelocitySeries CQ2/Bore size: ø12, ø16, ø20

Applicable modelFull stroke time (sec)

0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50

20

15

10

5

0



(2 position)

AN120-M5

TU0425

AS1201F-M5-04

AS1200-M5

SY3120-M5SYJ5120-M5VQ1160-M5

AN120-M5

TU0425

AS1201F-M5-04

AS1200-M5

SY3120-M5SYJ5120-M5VQ1160-M5

AN120-M5

TU0425

AS1201F-M5-04

AS1200-M5

SY3120-M5SYJ5120-M5VQ1160-M5

Str

oke

(mm

)

20

15

10

5

0

Str

oke

(mm

)

40

30

20

10

0

Str

oke

(mm

)


0 100 200 300 400 500 600 700 800 900 1000

Applicable model



(2 position)

ø12

ø16

ø20

10% 30% 50% 70%

70% 50% 30% 10%



How to Read the GraphHow to Read the Graph

Pressure

Piping length


Speed controller

Load factor

0.5 MPa

1 m

Vertically upward



Conditions

Front matter 42


Series CQ2/Bore size: ø25, ø32Applicable model


0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50


0 100 200 300 400 500 600 700 800 900 1000

40

30

20

10

0



(2 position)

Applicable model



(2 position)

AN120-M5

TU0425

AS1201F-M5-04

AS1200-M5

SY3120-M5SYJ5120-M5VQ1160-M5

AN120-M5

TU0604

AS2201F-01-06

AS2200-01

SY3120-M5SYJ5120-M5VQ1160-M5

Str

oke

(mm

)

40

30

20

10

0

Str

oke

(mm

)

ø25

ø32

10% 30% 50% 70%70% 50% 30% 10%



Example



q

w

d% d%

Full stroke time

Stroke

Speed

Time (sec)SOL

ONOFF

Str

oke

( L)

Str

oke

(mm

)

Str

oke

end

velo

city

Front matter 43

2 Best Pneumatics


Full Stroke Time & Stroke End VelocitySeries CQ2/Bore size: ø40, ø50, ø63


0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

100

75

50

25

0



(2 position)

AS2201F-02-06

AS2200-02

AS3201F-02-08

AS3000-02

Str

oke

(mm

)

100

75

50

25

0

Str

oke

(mm

)


0 100 200 300 400 500 600 700 800 900 1000

Applicable model



(2 position)

AS2201F-01-06

AS2200-01

100

75

50

25

0

Str

oke

(mm

)

ø40 10% 30% 50% 70%

70%

50%

30%

10%

ø50

ø63

AN101-01

SY5120-01

AN101-01

SY5120-01

AN101-01

SY5120-01

TU0604

TU0805

TU0604




Pressure

Piping length


Speed controller

Load factor

0.5 MPa

2 m

Vertically upward



Conditions

Front matter 44


Series CQ2/Bore size: ø80, ø100Applicable model


0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0


0 100 200 300 400 500 600 700 800 900 1000

100

75

50

25

0



(2 position)

Applicable model



(2 position)

AN110-01

AN101-01

TU1065 AS4000-03

SY7120-02SX7120-01

ANB1-03

AN30-03

TU1208

AS5000-03

AS420-03

VFS41-03VFR41-03

Str

oke

(mm

)

100

75

50

25

0

Str

oke

(mm

)

ø80

ø100

10% 30% 50% 70%

10%

30%

50%

70%




q

w

d% d%

Full stroke time

Time (sec)SOL

ONOFF

Str

oke

( L)

Str

oke

(mm

)

Str

oke

end

velo

city

Stroke

Speed


Example

Front matter 45

2 Best Pneumatics


Full Stroke Time & Stroke End VelocitySeries MB/Bore size ø32, ø40, ø50


0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

400

300

200

100

0



(2 position)

ANB1-01

AN101-01

TU0604

AS2201F-01-06

AS2200-01

SY5120-01SX5120-01

ANB1-01

AN101-01

TU0604

AS2201F-02-06

AS2200-02

SY5120-01SX5120-01

ANB1-01

AN101-01

TU0805

AS3201F-02-08

AS3000-02

SY5120-01SX5120-01

Str

oke

(mm

)

400

300

200

100

0

Str

oke

(mm

)

400

300

200

100

0

Str

oke

(mm

)


0 100 200 300 400 500 600 700 800 900 1000

Applicable model



(2 position)

ø32

ø40

ø50

70% 50% 30%

10%

10% 30% 50% 70%




Pressure

Piping length


Speed controller

Load factor

0.5 MPa

2 m

Vertically upward



Conditions

Front matter 46


Series MB/Bore size: ø63, ø80, ø100Applicable model


0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0


0 100 200 300 400 500 600 700 800 900 1000

400

300

200

100

0



(2 position)

Applicable model



(2 position)

AN110-01

AN101-01

TU1065 AS4000-03

SY7120-02SX7120-02

ANB1-02

AN20-02

TU1065

AS5000-02

AS420-02

VFS31-02VFR31-02

ANB1-03

AN30-03

TU1208

AS5000-03

AS420-03

VFS41-03VFR41-03

Str

oke

(mm

)

400

300

200

100

0

Str

oke

(mm

)

400

300

200

100

0

Str

oke

(mm

)

10% 30% 50% 70%

10%30%50%70%

ø63

ø80

ø100



Example



q

w

d % d %

Full stroke time

Time (sec)SOL

ONOFF

Str

oke

( L)

Str

oke

(mm

)

Str

oke

end

velo

city

Stroke

Speed

Front matter 47

2 Best Pneumatics


Full Stroke Time & Stroke End VelocitySeries CS1, CS2/Bore size: ø125, ø140, ø160


0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0

800

600

400

200

0



(2 position)

ANB1-03

AN30-03

SGP10A

AS420-02

AS5000-02

VFR3100-03VEX3320-03

ANB1-03

AN30-03

SGP10A

AS420-03

AS5000-03

VFR3100-03VEX3320-03

ANB1-04

AN40-04

SGP10A AS420-03

VFR4100-04VEX3320-04

Str

oke

(mm

)

800

600

400

200

0

Str

oke

(mm

)

800

600

400

200

0

Str

oke

(mm

)


0 50 100 150 200 250 300 350 400 450 500

Applicable model



(2 position)

ø125

ø140

ø160

10% 30% 50% 70%

70% 50%

30%

10%




Pressure

Piping length


Speed controller

Load factor

0.5 MPa

3 m

Vertically upward



Conditions

Front matter 48


Series CS1/Bore size: ø180, ø200, ø250, ø300Applicable model


0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0


0 50 100 150 200 250 300 350 400 450 500

800

600

400

200

0



(2 position)

Applicable model



(2 position)

ANB1-04

AN40-04

SGP15A AS420-03

VEX3500-04VP3145-03

ANB1-04

AN40-04

SGP15A AS420-04

VEX3500-04VP3145-03

ANB1-06

AN500-06

SGP20A AS600-10

VEX3500-06VP3145-04

ANB1-10

AN600-10

SGP20A AS600-10

VEX3500-10VP3145-06

Str

oke

(mm

)

800

600

400

200

0

Str

oke

(mm

)

800

600

400

200

0

Str

oke

(mm

)

800

600

400

200

0S

trok

e (m

m)

ø180

ø200

ø250

ø300

10% 30% 50% 70%

10%

30%

50%70%



Example



q

w

d% d%

Full stroke time

Time (sec)SOL

ONOFF

Str

oke

( L)

Str

oke

end

velo

city

Stroke

Speed

Str

oke

(mm

)

Front matter 49

2Best Pneumatics

Technical Data 1: Bore Size Selection···P.1820qDouble Acting Cylinder ··························································································· P.1820wSingle Acting Cylinder ····························································································· P.1821eCushion ························································································································· P.1823

Technical Data 2: Air Consumption and Required Air Volume··· P.1824qAir Consumption ······································································································· P.1824wRequired Air Volume································································································· P.1824

Technical Data 3: Theoretical Output Table···P.1825Applicable Cylinders/Series CJ2, CM2, CG1, CA2, MB, CS1, CS2 ····· P.1825

Technical Data 4: Condensation··· P.1827

Techn

ical Data

1819 A

Stationary Operation

Fig. 1 η = 0.7 or less

Fig. 2 η = 0.5 or less

Fig. 3 η = 1 or less

Formula

F1 = η x A1 x P ·································(1)F2 = η x A2 x P ·································(2)

F1: Cylinder force at extension side [N]F2: Cylinder force at retraction side [N]η: Load ratioA1: Piston area at extension side [mm2] → Refer to “Table (1)”.A2: Piston area at retraction side [mm2] → Refer to “Table (1)”.P: Operating pressure [MPa]

4 (CJ1)68

1012

16

20

25

32

40

506380

100

125

140

160

180

200

250300

2 3 5 4 6 5

6 (CJP2)8 (CQ2)

810 (CQ2)

1012 (CQ2)

1216 (CQ2)14 (CM2)

16 (CA, CQ2, CG)20202530

32 (CS2)36

32 (CS2)36

38 (CS2)40

40 (CQ2)45

40 (CQ2)506070

12.6 28.3 50.3 78.5 113 201 201 201 314 314 491 491 804 804 1260 1260 1960 3120 5030 7850 12300 12300 15400 15400 20100 20100 25400 25400 31400 31400 49100 70700

9.4 21.2 30.6 66.0 84.8 181 173 151 264 236 412 378 691 603 1100 1060 1650 2800 4540 7150 11500 11300 14600 14400 19000 18800 24200 23900 30200 29500 46300 66800

Bore sizeD [mm]

Piston rod sized [mm]

Piston area atextension side

A1 [mm2]

Piston area atretraction side

A2 [mm2]

Table (1) Cylinder Piston Area

Double Acting Cylinder

The relation of cylinder force, bore size and operating pressure is the following.

Load ratio ηIn selecting a cylinder, do not forget that in addition to the load, there are many forces that act upon the cylinder. Even in the stationary state shown in the diagram below, the resistances of the seals and the bearings in the cylinder must be subtracted. Furthermore, during operation, recoil due to the exhaust pressure also come into play.

These forces that act against the cylinder vary according to the conditions of the cylinder such as its size, pressure, and speed. Therefore, it is recommended to always select a cylinder of a larger size. Thus, select an air cylinder so that the load factor, which is a factor that is used in the selection process, will be as shown below.1) To use a cylinder for stationary operations:

load factor η = 0.7 or below (Fig.1)2) To use a cylinder for dynamic operations:

load factor η = 0.5 or below (Fig.2)3) To use a cylinder with a guide for horizontal operations:

load factor η = 1 or below (Fig. 3)

Data 1 Bore Size SelectionSeries CM2Series CJ2

Note) As shown in the diagram below, the pressure receiving area on the retraction side of the double acting single rod cylinder is reduced by the amount of the cross sectional area of the piston rod.

Note) If a dynamic high-speed operation is particularly needed, further reduce the load factor. Then, the cylinder will have power to spare for the amount by which the load factor has been reduced, which will make it easier to produce speed.

Meanwhile, a cylinder force that has been calculated by multiplying only the operating pressure by the pressure receiving area, assuming that no resistance exists in the cylinder, is called a “theoretical output”. For details about the theoretical output, refer to Data 3, page 1825.

Technical Data 1:Bore Size Selection

1820

Single Acting Cylinder

Table (2) Spring Reaction Force/Single Acting

Series CS1 Series CS2Series MBSeries CA2Series CG1

Formula

F1 = η x (A1 x P – f2) ··························(3)F2 = η x f1 ···········································(4)

Formula

F1 = η x f1 ···········································(5)F2 = η x (A2 x P – f2) ·························· (6)

A2: Piston area at retraction side [mm2]F1: Cylinder force at extension side [N]F2: Cylinder force at retraction side [N]η: Load ratio (Same as double acting type cylinder. Refer to page 1820.)A1: Piston area at extension side [mm2]P: Operating pressure [MPa]f2: Spring reaction force (Outlet) [N] → Refer to “Table (2)”.f1: Spring reaction force (Inlet) [N] → Refer to “Table (2)”.

SeriesBore size

(mm)Spring reaction force (N)

Outlet Inlet

CJP

CU

CJ12.5

4

4

6

10

15

6

10

16

6

10

16

20

25

32

1.13

3.04

2.80

3.92

5.98

10.8

3.72

6.86

14.2

3.5

6.9

15

21

28

34

0.64

1.47

1.00

1.42

2.45

4.41

1.77

3.53

6.86

1.6

3.0

5.9

5.9

11

16

(N)

Bore size(mm)

Stroke(mm)

Spring reaction force (N)

Outlet Inlet

5

10

5

10

5

10

5

10

5

10

5

10

10

20

13

13

15

15

15

15

20

20

30

30

30

39

50

54

8.6

3.9

10.3

5.9

10

5.9

16

11

23

16

13

21

30

24

12

16

20

25

32

40

50

Bore size(mm)

Stroke(mm)


Outlet Inlet

5

10

5

10

5

10

5

10

5

10

5

10

10

20

11

9.7

20

20

27

27

29

29

29

29

29

29

83

83

2.9

2.8

3.9

3.9

5.3

5.9

9.8

9.8

20

20

20

20

24

24

12

16

20

25

32

40

50

(N) Series CQ2/Single Acting, Spring Return (N) Series CQ2/Single Acting, Spring Extend

1. Single acting, Spring return type 2. Single acting, Spring extend type

∗ Use the same spring for the spring return type.∗ CVJ3: ø10, ø16 only.

IN INOUT OUT

Spring in pre-loaded condition

Spring of outletmounting load

When the spring is set in the cylinder

When the spring is contracted by supplying air

1. Single acting, Spring returnSpring in pre-loaded condition




2. Single acting, Spring extend

Note) Avoid applying a load on the cylinder as much as possible, because the value of the output force of a cylinder at the retraction side could be small.

Note) Avoid loading the cylinder since the cylinder force at the extension side is a small value.

Bore Size Selection

CJ2CVJ3∗

1821

TechnicaldataTechnicaldata

IN

IN

OUT

OUT

Single Acting Cylinder

Table (3) Spring Reaction Force/Single Acting

1. Single acting, Spring return type 2. Single acting, Spring extend type

Formula

F1 = η x (A1 x P – f2) ··························(3)F2 = η x f1 ···········································(4)

Formula

F1 = η x f1 ···········································(5)F2 = η x (A2 x P – f2) ·························· (6)

A2: Piston area at retraction side [mm2]F1: Cylinder force at extension side [N]F2: Cylinder force at retraction side [N]η: Load ratio (Same as double acting type cylinder. Refer to page 1820.)A1: Piston area at extension side [mm2]P: Operating pressure [MPa]f2: Spring reaction force (Outlet) [N] → Refer to “Table (3)”.f1: Spring reaction force (Inlet) [N] → Refer to “Table (3)”.

Bore size(mm)

Stroke(mm)


Outlet Inlet

20

25

32

40

25

50

75

100

125

150

25

50

75

100

125

150

25

50

75

100

125

150

175

200

25

50

75

100

125

150

175

200

225

250

39

47

67

76

24

7.8

17

9.8

14

8.8

30

14

25

17

21

16

41

15

31

20

26

18

25

20

50

24

36

24

32

24

30

24

29

24

(N) Series CVM3Series CM2

Bore size(mm)

Stroke(mm)


Outlet Inlet

20

25

32

40

25

50

75

100

125

25

50

75

100

125

150

200

25

50

75

100

125

150

200

25

50

75

100

125

150

200

39

47

67

76

24

7.8

17

9.8

14

30

14

24

17

21

24

17

40

15

31

20

25

31

20

50

24

36

24

32

36

24

(N) Series CG1Spring in pre-loaded condition




1. Single acting, Spring return

Spring in pre-loaded condition




2. Single acting, Spring extend

Data 1 Bore Size Selection

Note) Avoid applying a load on the cylinder as much as possible, because the value of the output force of a cylinder at the retraction side could be small.

Note) Avoid loading the cylinder since the cylinder force at the extension side is a small value.

Technical Data 1:Bore Size Selection

1822

CushionWhen a load that is operated by a cylinder must be stopped at the end of the stroke, the piston in the cylinder will collide with the cover unless an external stopper is provided. A built-in function that cushions the impact and the sound that are generated at this time is the cushion mechanism.There are two types in the cushion mechanism as below.

Rubber bumper: Dampens the impact sound and prevents the installation area from becoming loosened or damaged by the impact.

Air cushion: Similar to a rubber bumper, but achieves a higher level of effectiveness. It cushions the vibrations that are generated by collision.

Note) Depending on the model of the cylinder, it might not be possible to have either of the above two cushions built into the cylinder.

Even if the one of the cushion mechanisms described above is used for stopping a load, it might not be possible to completely absorb the impact if the kinetic energy of he load is too large. Therefore, be careful of overloading or excessive speed.The kinetic energy of a load can be expressed by the formula given below.

Kinetic energy absorbable by the cushion mechanism is the table at right. When the values are exceeded, following countermea-sures are required like using a bigger bore size cylinder or mount-ing an external stopper, etc.

Formula

E: Kinetic energy [J]m: Load mass [kg]V: Max. piston speed [m/s]

Bore size(mm) Standard type

0.022

0.038

0.055

0.09

0.15

0.26

0.46

0.77

1.36

2.27

With rubber bumper

0.043

0.075

0.11

0.18

0.29

0.52

0.91

1.54

2.71

4.54

121620253240506380

100

Series CQ2Allowable kinetic energy (J)

Bore size(mm)

5.8

6.1

6.6

6.6

7.1

7.0

7.5

8.0

0.40

0.63

1.00

1.60

2.50

4.00

6.40

10.00

20253240506380

100

Series RQEffective cushion length

(mm)Kinetic energy absorbable

(J)

Kinetic Energy Absorbable by the Cushion Mechanism

R: Rod side, H: Head side

Bore size(mm)

Effective cushion length(mm)

15.0

15.0

15.0

24.0

29.0

21.0

21.0

21.0

22.5

22.5

28.5

28.5

Kinetic energy absorbable (J)

2.8

4.6

7.8

16

29

32.3

44.6

58.8

78.4

98.0

147

265

40506380100125140160180200250300

Bore size(mm)

Rubber bumper

Allowable kinetic energy(J)

0.012

0.035

0.090


—

9.4

9.4


—

0.07

0.18

Air cushion

61016

Series CJ2

Bore size(mm)

Rubber bumper


0.27

0.4

0.65

1.2


11.0

11.0

11.0

11.8


0.54

0.78

1.27

2.35

Air cushion

20253240

Series CM2

Bore size(mm)

Rubber bumper


0.28

0.41

0.66

1.2

2.0

3.4

5.9

9.9


R: 7.0, H: 7.5

R: 7.0, H: 7.5

7.5

8.7

11.8

11.8

17.3

15.8


R: 0.35, H: 0.42

R: 0.56, H: 0.65

0.91

1.8

3.4

4.9

11.8

16.7

Air cushion

20253240506380100

R: Rod side, H: Head side

Series CG1

Series CA2, CS1, CS2

Bore size(mm)


18.8

18.8

21.3

21.3

30.3

29.3

R: 31.4 H: 29.4


2.2

3.4

5.9

11

20

29

45

3240506380100125

Series MB

Series CS1Series MBSeries CA2Series CG1 Series CS2

E = x V2 ·········································(7)2m

Bore Size Selection

1823


The air consumption is the volume of air that is consumed in the cylinder or in the piping between the cylinder and the switching valve during the reciprocal movement of an air cylinder. It is necessary for selecting a compressor and for calculating the running cost.The required air volume is the volume of air that is required for operating the cylinder at a specified speed, and it is necessary for selecting the diameter ofthe piping upstream from switching valve or the FRL equipment.

Data 2 Air Consumption and Required Air Volume

Formula

qc = Air consumption of air cylinder [dm3 (ANR)]qp = Air consumption of tubing or piping [dm3 (ANR)]q = Air consumption required for one stroke of air cylinder [dm3 (ANR)]A = Piston area at extension side [mm2]L = Cylinder stroke [mm]P = Operating pressure [MPa]l = Piping length [mm]a = Piping internal sectional area [mm2]

Subscript 1: Extension sideSubscript 2: Retraction side

Formula

Q = Required air [dm3/min (ANR)]t = Time for whole stroke [s]

Subscript 1: Extension sideSubscript 2: Retraction side

Nominal size

T0425T0604TU0805T0806 1/8BT1075TU1208T1209 1/4BTS1612 3/8BT1613 1/2B 3/4B 1B

O.D.(mm)

4

6

8

8

—

10

12

12

—

16

—

16

—

—

—

I.D.(mm)

2.5

4

5

6

6.5

7.5

8

9

9.2

12

12.7

13

16.1

21.6

27.6

Internal sectional area a (mm2)

4.9

12.6

19.6

28.3

33.2

44.2

50.3

63.6

66.5

113

127

133

204

366

598

Internal Sectional Area of Tubing and Steel Piping

1. Air Consumption 2. Required Air Volume

For calculating the volume of air consumption and required air in accordance with each condition, please make use of our “Equipment Selection Program” and “Energy Saving Program”.

qc1 = A1 x L x x 10–6

qc2 = A2 x L x x 10–6

qp1 = a1 x l1 x x 10–6

qp2 = a2 x l2 x x 10–6

Double acting cylinderq = qc1 + qp1 + qc2 + qp2

Single acting type cylinderq = qc1 + qp1

··················(8)

··················(9)

························(10)

························(11)

··············(12)

····································(13)

0.1(P1 + 0.1)

0.1(P2 + 0.1)

0.1P1

0.1P2

Q1 = x 60

Q1 = x 60

Q = Bigger one between Q1 and Q2

································(14)

································(15)t1

(qc1 + qp1)

t2

(qc2 + qp2)

Technical Data 2:Air Consumption and Required Air Volume

1824

Data 3 Theoretical Output

Applicable cylinder: Series CJ2, CM2, CG1, CA2, MB, CS1, CS2

Double Acting Cylinder (N)Bore size

(mm)Rod size

(mm)Operatingdirection

Piston area(mm2)

6

10

16

20

25

32

40

50

63

80

100

125

140

160

180

200

250

300

3

4

5

8

10

12

14

16

20

20

25

30

32

36

32

36

38

40

45

50

60

70

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

28.321.278.566.02011813142644914128046911260110012601060196016503120280050304540785071501230011500123001130015400146001540014400201001900020100188002540023900314002950049100463007070066800

Single Acting, Spring Return Cylinder (N)Bore size

(mm)Rod size

(mm)Operatingdirection

Piston area(mm2)

2.5

4

6

10

16

20

25

32

40

1

2

3

4

5

8

10

12

14, 16

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

OUTIN

4.90

12.6

28.3

78.5

201

314

491

804

1260

0.2

1.94

8.84

26.0

23.8

51.2

94

176

0.30.34

0.74

4.77

16.7

46.1

55.2

100

174

302

0.40.83

2.00

7.60

24.5

66.2

87

149

255

428

0.51.32

3.26

10.4

32.4

86.3

118

199

335

554

0.61.810.644.521.4713.31.7740.23.53

106.46.861497.8248144151568024

0.72.30

5.78

16.1

48.1

126.5

181

297

496

806

0.8

212

346

576

934

0.9

244

395

657

1054

1.0

275

444

737

1184


1. In the case of the extension side, theoretical output of single acting cylinder is a value taken secondary mounting load of the spring off theoretical output of double acting cylinder. In the case of the retraction side, take primary mounting load of the spring.

2. Avoid loading the cylinder on the retraction side.

Series CJ2(ø6 to ø16)

Series CM2(ø20 to ø40)

Series CG1(ø20 to ø100)

Series CA2(ø40 to ø100)

Series MB(ø32 to ø125)

Series CS1(ø125 to ø300)

Series CS2(ø125 to ø160)

Technical Data 3:Theoretical Output Table

0.8

2512113933306435531010880101084815701320250022404020363062805720984092009840904012300117001230011500161001520016100150002030019100251002360039300370005660053400

0.9

28323844237172462211309901130954176014902810252045304090707064401110010400111001020013900131001390013000181001710018100169002290021500283002660044200417006360060100

1.0

3142644914128046911260110012601060196016503120280050304540785071501230011500123001130015400146001540014400201001900020100188002540023900314002950049100463007070066800

0.25.664.2415.713.240.236.262.852.898.282.4161138252220252212392330624560

1010908

15701430246023002460226030802920308028804020380040203760508047806280590098209260

1410013400

0.38.496.3623.619.860.354.394.279.2147124241207378330378318588495936840

15101360236021503690345036903390462043804620432060305700603056407620717094208850

14700139002120020000

0.411.38.4831.426.480.472.4126106196165322276504440504424784660

125011202010182031402860492046004920452061605840616057608040760080407520

102009560

126001180019600185002830026700

0.514.210.639.333.010190.5157132246206402346630550630530980825

15601400252022703930358061505750615056507700730077007200

101009500

101009400

1270012000157001480024600232003540033400

0.617.012.747.139.6121109188158295247482415756660756636118099018701680302027204710429073806900738067809240876092408640

121001140012100113001520014300188001770029500278004240040100

0.719.814.855.046.214112722018534428856348488277088274213701160218019603520318055005010861080508610791010800102001080010100141001330014100132001780016700220002070034400324004950046800


1825


A

1826A

In pneumatic systems, the generation of waterdrops in piping may affect the equipment’s operation and service life.Thus, compressed air that is supplied is normally dehumidified by an air dryer, and is then sent to the system. However, when a compact actuator is used in order to downsize the equipment and correspond to the demand of high speed, condensation may occur and cause damage even if dehumidified air is used.When selecting cylinders, check the generation of condensation based on the control graph below.

Data 4 Condensation

How to analyze the control graph

Refer to a separate catalog, “Condensation Measures of Pneumatic Systems” (Refer to the SMC website.) for the details of measures.Condensation control can also be determined based on SMC’s Pneumatic Equipment Model Selection Program Ver. 3.5.

(1) Determine the volume ratio Kv . Determine the volume Kv using the following formula.

Kv = —— x ————

(2) Determine the intersection point w of the atmospheric pressure dew point of supply air q and volume ratio Kv e.(3) Determine whether condensation is generated depending on where the intersection point w falls.

VtVc

0.1Ps + 0.1

Vt: Piping volume [cm3]

Vc: Cylinder volume [cm3]

Ps: Supply air gauge pressure [MPa]

ConditionsSolenoid vale switching interval: ON 1 sec., OFF 1 sec.Piping tube material: Polyurethane

Enlarged view

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

0 5 10 15 20

Volume ratio Kv

Inle

t air:

Atm

osph

eric

pre

ssur

e de

w p

oint

°C

Ps [MPa]

Condensation zone

None-condensation zone

0.70.6

0.5 0.4

-60

-50

-40

-30

-20

-10

0

0 20 40 60 80 100 120 140 160Volume ratio Kv

Inle

t air:

Atm

osph

eric

pre

ssur

e de

w p

oint

°C

Condensation zone

None-condensation zone

0.40.5

0.60.7

Ps [MPa]

Condensation Control Graph

Technical Data 4:Condensation

1827


Documents

Air Cylinders Model Selection - SMC株式会社ca01.smcworld.com/catalog/BEST-Guide-en/pdf/2-m27-49_en.pdf · Air Cylinders Model Selection Series MB Series CJ2 Series CM2 Series