Hydraulic Clamping Fundamentals


Max. Op. Temp. - 160 F Min. Op. Temp. - 40 F Max. Flow Rate – 350 cubic inches a minute. Hyd. Fluid Filtration - 25-micron o

Hydraulic Circuits

For best performance, hydraulic circuits should be designed so that the cylinders have adequate flow to cycle in required time frame without exceeding maximum speed require - ments. On single acting cylinders, use caution in circuits with multiple devices so that the backpressure does not affect cylinder return. On double acting cylinders avoid circuits and control designs that allow the extend side to be pressurized at the same time as the return side; this creates a pressure intensification situation that could prove to be detrimental to cylinder components. In general, do not use spool valves to operate a clamping circuit. The permissible leakage in a spool valve can create problems with return of cylinders, pressure intensification situations and general poor circuit performance. See your VektorFlo® catalog for styles of valves compatible with work holding hydraulic circuits. Always provide enough timing or provide proper sequencing to insure complete engagement of cylinders before manufactur- ing process is started. Caution should be used when applying single acting cylinders equipped with breather ports in the fixture so that they are either covered in coolant or subjected to high-pressure coolant spray in the breather area. Consideration should be given to piping the breather port (if so equipped) to a location free from coolant saturation or to a chamber having at least ten times the total cylinder volume.

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