Pull-Pull Control Cables

Flexibility core controls are used in applications that require the transmission of forces in tension only. In general, more flexible conduit and a cable core is used for greater freedom in routing and smaller bend radii in restricted installations. Many installations feature an integral return spring to keep a specified load on the cable and to return the cable or mechanism to its original position after activation. Controls with cable cores permit the use of most standard fittings allowing a very wide range of mounting and retaining options.

Pull-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.