21
Model Selection
Series
MY3M
Absorption Capacity of Air Cushion and Stroke Adjusting Unit
υ
m
s
s
υ
m
s
υ
m
Air Cushion Stroke
Unit: mm
Bore size (mm)
16
25
40
63
Cushion stroke
13
18
25
30
Note) The maximum operating speed will differ when the stroke
adjusting unit is used outside the maximum fine stroke
adjustment range (with reference to the fixed stroke end),
such as at a fixed intermediate position (X416, X417).
(Refer to the graph above.)
Unit: mm
0 to -10
0 to -12
0 to -16
0 to -24
Stroke Adjusting Unit
Fine Stroke Adjustment Range
Bore size (mm)
16
25
40
63
Horizontal collision: P = 0.5 MPa
Load weight (kg)
Collision speed (mm/s)
MY3M16
1500
80
2000
1000
500
400
300
200
100
20
0.5
0.4
10
5
4
3
2
1
H unit
L unit
Air cushion, L unit
m
3
max
m
2
max
m
1
max
Maximum collision speed with
fixed intermediate position
Horizontal collision: P = 0.5 MPa
Load weight (kg)
Collision speed (mm/s)
MY3M25
1500
80
2000
1000
500
400
300
200
100
40
30
50
20
10
5
4
3
2
1
L unit
Air cushion, L unit
H unit
m
3
max
m
2
max
m
1
max
Maximum collision speed with
fixed intermediate position
Horizontal collision: P = 0.5 MPa
Load weight (kg)
Collision speed (mm/s)
MY3M40
1500
100
80
2000
1000
500
400
300
200
50
100
40
30
20
10
5
4
3
H unit
L unit
Air cushion, L unit
m
3
max
m
2
max
m
1
max
Maximum collision speed with
fixed intermediate position
Horizontal collision: P = 0.5 MPa
MY3M63
Load weight (kg)
Collision speed (mm/s)
1500
100
80
2000
1000
500
400
300
200
300
200
40
30
20
100
10
5
L unit
Air cushion, L unit
m
3
max
m
1
max
H unit
m
2
max
Maximum collision speed with
fixed intermediate position
Cushion Capacity
Symbols
υ
: Speed of impacting object (m/s)
m
: Weight of impacting object (kg)
F
: Cylinder thrust (N)
g
: Gravitational acceleration (9.8m/s
2
)
s
: Shock absorber stroke (m)
Note) The speed of the impacting object is
measured at the time of collision with the
shock absorber.
Fine stroke adjustment range (mm)
Horizontal
Vertical
(downward)
Vertical
(upward)
Type of
collision
Kinetic
energy E
1
Thrust
energy E
2
Absorbed
energy E
F
•
s
F
•
s + m
•
g
•
s F
•
s - m
•
g
•
s
E
1
+ E
2
m
•
υ
2
1
2
MY3A3B.qxd 06.2.17 9:13 AM Page 29
