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Wire Rope Assembly Testing Ensures Quality

Posted by David Karbin | Thu, Feb 06, 2014 @ 10:00 AM | 0 Comments

DSC 0559 (1)To ensure the quality and strength of your cable assembly or prototype, Lexco Cable offers pull-testing and proof-loading services. These tests supplement engineering calculations and material certifications to establish the strength of our products. The most commonly tested cables are fall protection cables, military cable assemblies, and any critical load bearing cables.

Fall protection cables are used to arrest a person’s fall. In compliance with the Department of Labor and OSHA, all professionals who work at a height must be protected from fall injury. Such professionals include construction workers and airline crew. For the health and safety of these workers, it’s essential that the quality of any fall protection cable be verified before use.

DSC 0613 (1)Cable assemblies in the military are among the most extensive, so it comes as no surprise that they require pull-testing and proof-loading. The military requires cable assemblies for a variety of applications, including missile launch systems and airfield lighting systems. As with any product made for the military, these cables must be tested and proven before they are distributed.

Proof-loading and pull-testing can be performed to meet the requirements of MIL-DTL-5688. That means that the breaking strength of terminals or wire strands must be 60-percent of the terminal Minimum Breaking Strength (MBS), 60 percent of the wire rope MBS, or 60 percent of the wire rope assembly MBS, based on a gradual linear pull.

In general, all load bearing cables, be it a hoist or tow cable, should be tested before the design is implemented in the field.  Lexco Cable is happy to perform pull-testing and proof-loading in-house for loads up to 50,000 pounds.  Our calibration procedures adhere to ISO/IEC Guide 25, ISO 9002, ISO 10012-1, and ANSI/NCSL Z540-1. In addition, all of our calibration equipment is directly traceable to the National Institute of Standards and Technology. 

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