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Series MY3<br />
Model Selection 1<br />
The following are steps for selecting the MY3 series which is best suited to your application.<br />
Guideline for Tentative Model Selection<br />
Guideline for tentative model selection<br />
Series Type Note<br />
Stroke accuracy Use of external guide Direct loaded Table accuracy<br />
<strong>MY3A</strong><br />
Basic short type<br />
Generally combined with a separare<br />
guide making it, by length, more compact.<br />
MY3B<br />
MY3M<br />
Basic standard type<br />
Slide bearing guide<br />
type<br />
Generally combined with a separare<br />
guide, when stroke accuracy is required.<br />
Mounting a work piece directly on the<br />
product, when stroke accuracy is required.<br />
Most suitable Suitable Usable Not recommended<br />
Note) The table accuracy means the amount of table deflection when a moment is applied.<br />
Selection Flow Chart<br />
When an external guide is used, the selection confirmation of the guide capacity should follow the selection procedure<br />
of the external guide.<br />
The MY3 series allow direct load application within the allowable range for the built-in guide. The payload in this case<br />
will vary depending on the driving speed and the mounting orientation of the cylinder. Please refer to the flow below and<br />
confirm the selection. (For more detailed description of the selection flow, please refer to the instruction manual.)<br />
Operating conditions<br />
m: Load mass (kg) Mounting<br />
V : Speed (mm/s) direction:<br />
P : Operating pressure (MPa)<br />
Re-examine the operating conditions.<br />
Tentative selection of cylinder model<br />
<strong>MY3A</strong>: Basic short type<br />
MY3B: Basic standard type<br />
MY3M: Slide bearing guide type<br />
Select larger<br />
cylinder size.<br />
Change the<br />
guide type.<br />
Determination<br />
of load mass<br />
and allowable<br />
moment<br />
NG<br />
In case of the <strong>MY3A</strong><br />
and MY3B only<br />
Select the<br />
different guide type.<br />
∗Please refer to the information<br />
by the guide<br />
manufacturer.<br />
NG<br />
OK<br />
OK<br />
Examine the cushioning<br />
mechanism at stroke end.<br />
Built-in cushion<br />
stroke adjusting<br />
unit<br />
NG<br />
External<br />
shock<br />
absorber<br />
NG<br />
OK<br />
OK<br />
1124<br />
Examine the auto switch<br />
mounting (model).<br />
Model<br />
selected<br />
∗ When using an external cushioning unit, we recommend installing a suitable unit near the load’s<br />
center of gravity.<br />
It is possible to select all models of mechanically jointed rodless cylinder (the MY3 series) according<br />
to the procedure indicated above.<br />
Refer to the separate instruction manual for further explanation, and please consult with <strong>SMC</strong><br />
regarding any questions.
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