A cable stop is typically used for three functions in a cable assembly:
- Terminal anchor. Installed at the cable end, the stop prevents the cable from pulling through brackets, levers, or slots by creating a fixed contact point.
- Travel limiter. Positioned along the cable, it limits movement by stopping the cable at a defined location inside a guide or mechanism.
- Adjustable fixing point. The clamping screw allows the stop to be released and repositioned during assembly or maintenance, providing more flexibility than permanent crimped or swaged cable stops.
How the Clamping Force Is Generated
The cable stop holds the cable through a simple screw-clamping mechanism with two contact points.
- The cable passes through the radial hole and rests against the opposite wall of the body.
- The slotted pan-head screw is tightened through the axial threaded hole, converting tightening torque into clamping force.
- As the screw presses the cable against the hole wall, the two contact areas create friction that prevents cable movement.
- Holding force depends on factors such as screw torque, cable material and construction, screw tip design, and surface condition. It is not a fixed value for every application.
- For stranded wire rope, the screw can also slightly deform and grip the cable strands. A brass body helps provide secure contact by conforming slightly to the cable surface.
Applications of Custom Machined Cable Stops
| Sector | Typical Use | Key Benefits |
|---|---|---|
| Fitness Equipment | Weight-stack cables, cable trainers, selector cables | Adjustable positioning and reliable cable fixing. |
| Automotive Controls | Hood release, seat adjuster, throttle and choke cables | Compact design with easy screwdriver adjustment. |
| Industrial Automation | Cable-driven mechanisms, grippers, linear travel stops | Provides repeatable stop positions without extra machining. |
| Window & Architectural Hardware | Blind cords, lift systems, tension cables | Small size and simple installation. |
| Marine & Outdoor Equipment | Lanyards, tent cords, awning cables | Available in corrosion-resistant material options. |
| Agricultural Equipment | Mower, tiller, and tractor control cables | Suitable for adjustable outdoor cable systems. |
| Medical & Rehabilitation Equipment | Cable positioning and adjustment mechanisms | Clean machined surfaces and repeatable adjustment. |
FAQ
Q: Is the cable held by the screw alone?
A: No. The cable is secured by friction between two contact points: the screw bearing surface on one side and the cross-hole wall on the other. The screw provides the clamping force, while the body supports the reaction force.
Q: Can the cable stop be repositioned after tightening?
A: Yes. Loosen the screw, slide the stop to a new position, and retighten. However, repeated adjustment at the same location may mark or damage cable strands and reduce holding performance.
Q: Why use a brass body with a steel screw?
A: Brass provides good machinability and forms a smooth cable contact surface, while the plated steel screw delivers reliable thread strength and easy replacement. This combination balances performance and cost.
Q: Will vibration cause the screw to loosen?
A: Continuous vibration may reduce clamp preload over time. Thread-locking methods, locking screws, or scheduled re-tightening can be considered depending on whether the stop needs adjustment after installation.
Q: Can it be used for lifting cables?
A: No. A friction-clamped cable stop is designed for positioning and adjustment, not for lifting or safety-critical loads. Certified cable terminals should be used for load-bearing applications.
Q: Which cables are not suitable for this design?
A: Cables with soft plastic coatings, excessive lubrication, or very hard wire constructions may require modified screw tips or special clamping designs.
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