Symbol
MY3B
MY3A
9
Mechanically Jointed Rodless Cylinder
Series
MY3A/3B
Specifications
Bore size (mm)
Fluid
Action
Operating pressure range
Proof pressure
Ambient and fluid temperature
Cushion
Lubrication
Stroke length tolerance
Port size (Rc, NPT, G)
16
25 40
Air
Double acting
0.15 to 0.8 MPa
1.2 MPa
5 to 60
°
C
Rubber bumper (MY3A) / Air cushion (MY3B)
Non-lube
M5 x 0.8
1/8
Stroke Adjusting Unit Specifications
Bore size (mm)
Unit symbol
Shock absorber model
Fine stroke adjustment range (mm)
16
25
40
63
MY3B
L
RB0806
H
RB1007
L
RB1007
H
RB1412
L
RB1412
H
RB2015
L
RB2015
H
RB2725
Weight
Bore size
(mm)
Model
16
25
40
63
16
25
40
63
0.22
0.65
2.45
7.14
0.23
0.75
2.58
7.87
0.06
0.17
0.25
0.56
0.06
0.17
0.25
0.56
Basic
weight
Additional
weight
per 50 mm
stroke
Stroke adjusting unit weight
(per unit)
L unit
weight
H unit
weight
0.04
0.10
0.26
0.57
0.05
0.15
0.30
0.92
1/4
63
3/8
Calculation method / Example:
MY3B25-300L
Basic weight
0.75 kg
Additional weight
0.17/50 st
L unit weight
0.1 kg
Cylinder stroke
300 st
0.75 + 0.17 x
300
÷
50 + 0.1 x
2
≈
1.97 kg
Unit: kg
Made to Order
Made to
Order
Refer to pages 34 to 35 regarding “Made to Order” for the MY3A/B
series.
Shock Absorber Specifications
Model
Max. energy absorption (J)
Stroke absorption (mm)
Max. collision speed (mm/s)
Max. operating frequency
(cycle/min)
Spring
force (N)
Operating temperature
range (
°
C
)
Extended
Compressed
RB
2015
RB
2725
RB
0806
RB
1007
RB
1412
29.8
15
25
8.34
20.50
46.6
25
10
8.83
20.01
0.84
6
80
1.96
4.22
2.4
7
70
4.22
6.86
10.1
12
1000
45
6.86
15.98
5 to 60
MY3A
MY3B
Piston Speed
Bore size (mm)
Without stroke adjusting unit (MY3A)
Without stroke adjusting unit (MY3B)
16
25
40
80 to 500 mm/s
80 to 1000 mm/s
80 to 1000 mm/s
80 to 1500 mm/s
63
Stroke adjusting unit (L and H unit/MY3B)
∗
External shock absorber (low reaction type)
∗
Refer to “External Shock Absorber Selection” on page 7.
When the RB series is used, operate at a piston speed that will not exceed
the absorption capacity of the air cushion and stroke adjusting unit.
Bore size
(mm)
16, 25
40, 63
Standard stroke (mm)
∗
100, 200, 300, 400, 500, 600
700, 800, 900, 1000, 1200
1400, 1600, 1800, 2000
3000
Max. manufacturable
stroke (mm)
Standard Stroke
∗
Strokes are manufacturable in 1 mm increments, up to the maximum stroke.
However, when exceeding 2000 mm stroke, add “-XB11” to the end of the
model number. Refer to “Made to Order ” on page 34.
Theoretical Output
Unit: N
16
25
40
63
0.2
0.3
0.4
0.5
0.6
0.7
0.8
40
98
251
623
60
147
377
934
80
196
502
1246
100
245
628
1557
120
294
754
1869
140
343
879
2180
160
392
1005
2492
Operating pressure (MPa)
Bore
size
(mm)
Piston
area
(mm
2
)
200
490
1256
3115
Note) Theoretical output (N) = Pressure (MPa) x Piston area (mm
2
)
Note) The tolerance of the MY3A is a value with no pressurization. When a rubber bumper
is used, the stroke of the MY3A varies according to the operating pressure.
To find the stroke length tolerance at each operating pressure, double the addi-
tional stroke due to pressure on each side (page 5) and add it.
0 to –10
0 to –12
0 to –16
0 to –24
(ø16 L unit: 80 to 800 mm/s)
1000 mm or less ,
Note)
From 1001 mm
+1.8
0
+2.8
0
L unit
H unit
Left
Right
Left
Right
MY3B
16
25
MY3B-A16L1
MY3B-A16L2
MY3B-A16H1
MY3B-A16H2
MY3B-A25L1
MY3B-A25L2
MY3B-A25H1
MY3B-A25H2
MY3B-A40L1
MY3B-A40L2
MY3B-A40H1
MY3B-A40H2
MY3B-A63L1
MY3B-A63L2
MY3B-A63H1
MY3B-A63H2
40
63
Stroke Adjusting Unit Model
Option
Bore size
(mm)
Unit
Model
MY3A3B.qxd 06.2.17 9:13 AM Page 17
