Carl Stahl Sava Industries, Cable Assemblies

Push-Pull Control Assemblies

Push-Pull Control

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Design Procedure

1. Select a cable suitable to withstand the load. Keep in mind, the more number of wires in a cable the more flexible the cable will be. For push-pull types of application the solid core wire will be most suitable. Next to that a 1x7 or 1x19 construction cable may be used where the movement is small and the casing is adequately constrained. Select a casing and make a scale layout drawing. Try to keep the number of bends to a minimum and the radii of bends to a maximum. The radius should not be less than 100 times the core diameter. Remember, the lighter casing with a light load will be more flexible.

2. Build a prototype of the design in its final configuration. Apply loads to determine performance characteristics.

3. Determine exact dimensions of the assembly from the prototype. Check tolerances on all components to keep the length at a minimum so extra bends are not necessary. Indicate the movement of the core inside the casing.

4. Prepare a drawing and indicate the distance moved by the core inside the casing. Include lengths, tolerances, end fittings, casing, core, quantities, and send to SAVA with a request for quote.

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