Equivalent Bore Size and Stroke
Mass
Air Flow Rate and Air Consumption
While the slit type rodless cylinders
ORV
series’ air flow rate and air consumption can be found through the following calculations, the quick reference table below
provides the answers more conveniently.
Air consumption: Q
2
＝
π
D
2
4
×
L
×
2
×
n
×
P
＋
0.101
0.101
×
10
–6
Air flow rate: Q
1
＝
π
D
2
4
×
L
×
60
t
×
P
＋
0.101
0.101
×
10
–6
Q
1
: Required air flow rate for cylinder
R
/min (ANR)
Q
2
: Air consumption of cylinder
R
/min (ANR)
D : Equivalent bore size
mm
L : Cylinder stroke
mm
t : Time required for cylinder to travel one stroke
s
n : Number of cylinder reciprocations per minute
times/min
P : Pressure
MPa
Q
1
'
: Required air flow rate for cylinder
ft.
3
/min. (ANR)
※
Q
2
'
: Air consumption of cylinder
ft.
3
/min. (ANR)
※
D
'
: Equivalent bore size
in.
L
'
: Cylinder stroke
in.
t : Time required for cylinder to travel one stroke
sec.
n : Number of cylinder reciprocations per minute
times/min
P
'
: Pressure
psi.
Air consumption: Q
2
'
＝
×
L
'
×
2
×
n
×
×
Air flow rate: Q
1
'
＝
×
L
'
×
60
t
×
×
Maximum available stroke
2000
Equivalent bore size
16
20, 25
32, 40, 50
Standard strokes
25, 50, 75, 100, 125, 150, 175, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800
50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 1000
100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200
mm
Remark: Non-standard strokes are available at 1mm pitch intervals. For strokes beyond the maximum available stroke, or for non-standard strokes, ask the
nearest Koganei office. Consult us for delivery.
Model
Zero stroke
mass
0.20 [0.44]
0.34 [0.75]
0.51 [1.12]
1.15 [2.54]
1.90 [4.19]
3.48 [7.67]
0.03 [0.066]
0.04 [0.088]
0.05 [0.110]
0.085 [0.187]
0.125 [0.276]
0.19 [0.419]
F-type
support
0.008 [0.018]
0.016 [0.035]
0.028 [0.062]
0.036 [0.079]
0.062 [0.137]
0.062 [0.137]
M-type
mount
0.019 [0.042]
0.03 [0.066]
0.038 [0.084]
0.095 [0.209]
0.13 [0.287]
0.23 [0.507]
Table
0.077 [0.17]
0.14 [0.31]
0.20 [0.44]
0.47 [1.04]
0.68 [1.50]
1.07 [2.36]
One side
0.062 [0.137]
0.105 [0.232]
0.18 [0.40]
0.31 [0.68]
0.46 [1.01]
0.74 [1.63]
Both sides
0.124 [0.273]
0.21 [0.46]
0.36 [0.79]
0.62 [1.37]
0.92 [2.03]
1.48 [3.26]
Shock absorber unit
ZE
□□□
A
0.015 [0.033]
ZE
□□□
B
0.035 [0.077]
Additional mass of 1 sensor switch
Note
kg [lb.]
Note: Sensor switch types A and B show the lead wire lengths.
A: 1000mm [39in.] B: 3000mm [118in.]
ORV16
ORV20
ORV25
ORV32
ORV40
ORV50
16 [0.630]
20 [0.787]
25 [0.984]
32 [1.260]
40 [1.575]
50 [1.969]
Air pressure MPa [psi.]
The figures in the table show the air flow rate and air consumption when a rodless cylinder makes 1 reciprocation with stroke of 1mm [0.0394in.]. The air flow rate
and air consumption actually required is found by the following calculations.
0.2 [29]
1.198 [0.07311]
1.871 [0.1142]
2.924 [0.1784]
4.791 [0.2924]
7.486 [0.4568]
11.70 [0.7140]
0.3 [44]
1.596 [0.09739]
2.493 [0.1521]
3.896 [0.2377]
6.382 [0.3895]
9.973 [0.6086]
15.58 [0.9508]
0.4 [58]
1.993 [0.1216]
3.115 [0.1901]
4.867 [0.2970]
7.974 [0.4866]
12.46 [0.7604]
19.47 [1.188]
0.5 [73]
2.391 [0.1459]
3.737 [0.2280]
5.838 [0.3563]
9.566 [0.5838]
14.95 [0.9123]
23.35 [1.425]
0.6 [87]
2.789 [0.1702]
4.358 [0.2659]
6.810 [0.4156]
11.16 [0.6810]
17.43 [1.064]
27.24 [1.662]
0.7 [102]
3.187 [0.1945]
4.980 [0.3039]
7.781 [0.4748]
12.75 [0.7781]
19.92 [1.216]
31.13 [1.900]
0.8 [116]
3.585 [0.2188]
5.602 [0.3419]
8.753 [0.5341]
14.34 [0.8751]
22.41 [1.368]
35.01 [2.136]
cm
3
[in.
3
]/Reciprocation (ANR)
Additional
mass for each
25mm [0.984in.]
stroke
π
D
'
2
4
P
'
＋
14.7
14.7
π
D
'
2
4
P
'
＋
14.7
14.7
1
1728
1
1728
※
Refer to p.54 for an explanation of ANR.
Equivalent
bore size
mm [in.]
Note: To find the actual air consumption required when using the slit type rodless cylinders
ORV
series, add the air consumption of the piping to the air
consumption obtained from the above calculation.
●
Finding the air flow rate (for selecting F.R.L., valves, etc.)
Example:
When operating a slit type rodless cylinder
ORV
series with an equivalent bore size of 40mm [1.575in.] at a speed of 300mm/s [118in./sec.] and
under air pressure of 0.5MPa [73psi.]
14.95
×
1
2
×
300
×
10
−
3
＝
2.24
R
/s [0.0791ft.
3
/sec.] (ANR)
(At this time, the flow rate per minute is 14.95
×
1
2
×
300
×
60
×
10
−
3
＝
134.55
R
/min [4.75ft.
3
/min.] (ANR))
●
Finding the air consumption
Example 1. When operating a slit type rodless cylinder
ORV
series with an equivalent bore size of 40mm [1.575in.] and a stroke of 100mm [3.94in.], and under
air pressure of 0.5MPa [73psi.], for 1 reciprocation
14.95
×
100
×
10
−
3
＝
1.495
R
[0.0528ft.
3
]/Reciprocation (ANR)
Example 2. When operating a slit type rodless cylinder
ORV
series with an equivalent bore size of 40mm [1.575in.] and a stroke of 100mm [3.94in.], and under
air pressure of 0.5MPa [73psi.], for 10 reciprocations per minute
14.95
×
100
×
10
×
10
−
3
＝
14.95
R
/
min [0.528ft.
3
/min.] (ANR)
1054̲1067ORVｼﾘｰｽﾞ̲ENG 07.9.10 1:58 AM ページ1060
