Push-Pull Control Cables
 Push-Pull Control Cables and Shuttle Molded Cable Controls

Push-Pull Control Cables

Solid core controls are used in applications that require the transmission of forces in both the push and pull mode of operation. The vast majority of these products use various combinations of conduit styles and solid wire cores in their construction.

In some cases, stiffer, small diameter cables can be used for push-pull applications, providing the push load is very light and the combination of cable and conduit is carefully considered. Solid wire cores can be formed on the ends to eliminate the need to apply separate fittings or terminations. Bend radii should be large and routing must be simple in order to avoid a permanent set in the core wire. All push-pull controls have a larger capacity in the pull (or tension) mode than in the push (compression) mode.

Push-Pull Shuttle Molded Cable Controls

All design considerations for push-pull and pull-pull controls also apply to molded cable controls. Additional design factors do affect the design of these products. They include the molded conduit fittings, conduit selection, assembly function and dimensions.

Recognition of these factors, combined with a practical design for the application, will result in a successful, reliable and cost-effective assembly.

Design Considerations:

Accepted industry standards for molded part design should be utilized in the design and development of a custom molded fitting. In general, the following should be considered:

  1. Determine the type of assembly option desired; i.e., snap in place, push in place, retained with fastener, etc.
  2. The wall thickness should be as consistent as possible to minimize potential warpage or excessive shrinkage.
  3. The design should allow 1/2" minimum conduit length molded within the part. Using notched or serrated conduit with 1/2" minimum insertion length will normally result in 30 lbs. minimum pull-off.
  4. The design should allow for a straight "open and close" of the mold.
    NOTE: Our Engineering personnel will evaluate your custom conduit fitting and make recommendations regarding its moldability.
  5. The fittings must be designed to allow the insertion of a support pin into the inside diameter of the conduit.