<br>Since more than 40 years have elapsed since production began, and they are scheduled to be discontinued, they are no longer listed in the web catalog.<br>If replacing a valve, we recommend switching to one of SMC’s current products from the SY or VFR series in consideration of future availability.
<br>If a substitute is selected based on the flow characteristics and port size, an SY7000 or VF3000 series valve will be suggested, but they differ in specifications and dimensions.<br>Select a model and part number according to the operating conditions. (e.g., For the VP4125-021G-X52: SY7120-1G-02, VF3130-1G1-02, VF3130K-1G1-02, etc.)
<br>Refer to the web catalog for the full part numbers to order a new VM series valve. (The VM/VZM/VFM series catalog can be found here.)<br>Note) There are also old valves with only “VM15” and “VM25” indicated on the product label. Refer to the new VM series catalog for the full part numbers.
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<br>For details, refer to the "Min. allowable stroke length for auto switch mounting" in the catalog.<br>About the horizontal lines in the stroke table
<br>Note 1) For CDU/CDUK single acting spring extend type cylinders, the body dimensions of bore sizes ø20 and larger will extend beyond the standard dimensions.<br>Note 2) For CDUJ series cylinders, the body dimensions of bore sizes ø6 and larger will extend beyond the standard dimensions. The CU series catalog can be found here.
<br><br>The current part number for the old CDQ2B32-30D is “CDQ2B32-30DZ.” For this product, the auto switch mounting rail on the body has been changed to a round auto switch mounting groove. Cylinder body mounting is possible. A mounting bracket may be required if the auto switch in use is to be used as is. Check the auto switch model first.
<br>The operating pressure of JC series joints is 1 MPa or less, while JA series joints can accommodate up to hydraulic cylinders with an operating pressure of 3.5 MPa or less. JC series joints are also lighter than those of the JA series due to their aluminum case.
<br>Use a circuit in which both sides of the piston are balanced by a regulator with a backflow function to prevent cylinder lurching when restarting after a lock stop or when the manual lock is released.
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