Push-Pull Control Assemblies

OUR EXPERTISE AS A PUSH-PULL CABLE MANUFACTURER IS BACKED BY OUR HALF CENTURY LEGACY

For nearly half a century, Carl Stahl Sava Industries has helped organizations just like yours achieve their push-pull cable assembly production goals. Today, Sava continues that legacy as a manufacturer of the world's finest push-pull components and custom assembled cable solutions for aircraft push-pull cables, and push-pull cable assemblies in many other industries. 

From casings cores, push-pull cable clamps to terminals locking controls, and other push-pull cable mechanisms, Sava follows strict manufacturing quality standards to create push-pull products that transmit motion or actuate a device between two fixed points. Our products are used across multiple industries and customers around the world trust us every day to ensure the best performance available for their push-pull assemblies. Our push-pull components are used for actuating, controlling, cycling and regulating devices depended upon worldwide to transmit motion, adjust mechanisms and activate parts in products we all rely on daily.

Push-Pull Control Cable Assemblies That Satisfy Your Requirements

While our industry reach as a push-pull cable manufacturer is broad, our engineering expertise is time-tested and specific. Creating custom assemblies is an important part of our capabilities as a cable assembly manufacturer. And thus, our in-house team of engineers review your push-pull cable design, and where logical, make suggestions and offer value-added services that improve the outcome of your production run and ultimately the quality of your products, both in lifetime performance and durability.

Some of our push-pull component applications include…

Aerospace
applications
Equipment to open
and close doors
Fire suppression
mechanisms
Access safety
latches
Safety brake
devices
Throttle
cables

 

PROVIDING SERVICES THAT ADD VALUE TO YOUR PUSH-PULL COMPONENTS

As an experienced cable assembly manufacturer, we understand how application dynamics and even the smallest detail can impact your push-pull components and the assemblies. This is why Sava's engineering and production experts offer…


Proof loading and prestressing

Your custom cable assemblies need to be tested for optimal performance and fitness for your application. Sava knows this. So, we will mitigate the effect of constructional stretch with our proof loading and prestressing value-added solutions.

Break-strength testing

Tension failures are unacceptable in any production run. That’s why Sava offers state-of-the-art, break-strength testing solutions, ensuring your cable assemblies meet or exceed your tension failure requirements.

Passivation

Prevent corrosion, rust and chemical reactivity, promising your cable assemblies meet the lifespan your applications demand. Sava proudly offers passivation services for all of our cable, fittings and cable assemblies.


Browse our push-pull components, including our solid wire, controls and terminal solutions now.

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FINDING THE RIGHT PUSH-PULL COMPONENTS

While choosing the right services is important to assure optimal application performance, your push-pull assembly design plays a critical role. Take a moment to understand the design factors that go into buying the best push-pull cable assembly products.



Constructions, Loss of Motion, Travel, Bend Radii and Life

In addition to manufacturing cables that support a variety of applications, our engineers also offer a number of services based on your unique requirements:

Construction

The basic component of a push-pull control consists of a solid wire with a casing of plastic tube or spirally wrapped wire.

Substituting a flexible cable for the solid wire allows the control system to be bent to facilitate routing. Different fittings, as discussed below, can be attached to the ends of the casing and cable for ease of operation.



Loss of motion

The principal elements of lost motion, in a control system, are backlash and deflection. Backlash is caused by the core member moving inside the casing with the change in direction of motion. It is a function of the clearance between the core and casing, and total number of degrees of bend in the cable. This can be reduced by careful design. The other cause of loss of motion is deflection of the core wire under compressive load. Elastic strain in the core member, due to compressive or tensile force, also contributes to the loss of motion. The casing must be anchored securely to keep it from responding to the compression or tension modes of input loading.


Travel

Travel of the core inside the casing should be kept to a minimum, since longer travel increases friction and decreases output. In the push-pull type of application, the chance of buckling of the core becomes greater. The travel should be limited to less than 5˝ if possible. The linear speed of operation should be relatively low.


Input Load Factor

Friction between the core and the casing causes a loss in output force for a certain amount of input force. Friction is a function of the degrees of bend in the system. The ratio of the input force, to the output force, is called the Input Load Factor. The Input Load Factor has been plotted against the degrees of bend in the system and is shown in the accompanying graph. For selecting the right control system, the input load has to be determined by multiplying the output load with the Input Load Factor obtained from the graph using the following formula:

I = Input Load

P = Output Load

F = Input Load Factor (from graph)

I = P x F

Example

Consider a push-pull assembly with metal-lined casing requiring an output load of 6 lbs. Total degrees of bend in the system–270°. Input Load Factor from chart–2.05. Input Load = 6 x 2.05 = 12.30 lbs.

Get your push-pull component needs met right the first time, every time with Sava. We have almost 50 years experience outfitting you with the right fittings and components.

Let's discuss your next project or get a quote today!

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