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2. Operating method or operation
2-1. Design precautions
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Warning
1. The product is designed for use only in compressed air systems. Do not operate at
pressures or temperatures, etc., beyond the range of specifications, as this can cause
damage or malfunction. (Refer to the specifications.)
Please contact SMC if using for fluids other than compressed air. We do not guarantee
against any damage if the product is used outside of the specification.
2. Take safety measures (e.g. mounting protective covers) when workpieces pose a danger
of fingers being caught in a gripper, etc.
3. There is a danger of workpieces dropping if there is a decrease in gripping force due to a
drop in circuit pressure caused by a power failure, etc. It is necessary to take measures
such as drop prevention so that injury and damage to machinery or equipment can be
prevented.
4. If the product is used for the purpose other than the transportation of a workpiece, such as
positioning or clamping, please consult SMC.
2-2. Selection
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Warning
1. The gripping point should be set within the limited range. If there is an overhang, please
consult with SMC.
When the gripping point distance becomes large, the gripper attachment applies an
excessively large load to the gripper sliding section, and causes adverse affects on the life
of the gripper. Refer to the catalog for details.
2. Attachments should be designed to be as light and short as possible.
(1) A long or heavy attachment increases the inertia force required to open or close the
fingers. This may cause unsteady movement of fingers and have an adverse affect on
the life of the gripper.
(2) Design the attachment as short and light as possible even if the gripping point is
within the limited range. Refer to the catalog for details.
3. Select a model whose gripping force is compatible with the workpiece mass.
Incorrect selection may lead to the dropping of a workpiece, etc. Refer to the model
selection criteria of each series for the effective gripping force and the workpiece mass.
4. Do not use the product in applications where excessive external force or impact force is
applied. It may cause product failure. Please consult with SMC if necessary.
5. Select a model having a sufficient working finger opening/closing width.
< In case of insufficient width >
(1) Gripping becomes unsteady due to variations in opening/closing width or workpiece
diameter.
(2) When using an auto switch, the detection may not be reliable. Refer to the Auto Switch
Hysteresis section and set the stroke including the hysteresis length for a reliable switch
function. When using the water resistant 2-color indicator auto switch, the gripper stroke
may be limited by the setting of the indicator color during detection.
Gripping point