Hydraulic Clamping Fundamentals

SIZING THE SWING CLAMP The clamp’s nominal load rating is at 5,000 psi, with a VektorFlo® standard or short clamp arm properly attached. The clamping force being applied is a function of: The length of the clamp arm from center of clamp to point of contact on the work piece The hydraulic pressure applied to the clamp In order to find the size of swing clamp needed, you must first determine the total load the swing clamp must resist. This load is based on the following factors: The anticipated force from the operation being performed (as the work-piece retention forces are anticipated, some margin of safety should be incorporated) The direction of the force vectors as a result of the operation being preformed The weight of the part may also be an issue, depending on work piece orientation. The following graphs show the approximate clamp force based on the different lengths of VektorFlo® swing clamp arms, and the corresponding maximum allowable hydraulic system pressure. Using these graphs, find your anticipated required force (caution must be used to avoid placing excessive amounts of force into the work piece as this may cause deflection or displacement) in the right hand column. Follow across the graph to the left until your required load intersects the required length of arm. Read the recommended operating pressure of the system. Choose the size of swing clamp needed based on the required arm length and system pressure from the intersection. This point must be on or below the curve. If point is above the curve choose a different size clamp that meets your requirements.

Hydraulic Clamping Fundamentals Rev - D

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