1. What is the Haul Truck Tie-Back?
A purpose built, high-strength synthetic fiber cable assembly used to keep the truck bed of a haul truck in the raised position during maintenance operations. The cable is used in case the hydraulics lose pressure or fail. Tie-backs are also referred to as a body up cables, bed cables, or box slings.
2. What is the cable made of?
The cable core is Plasma® Fiber, which is 1/7th the weight of steel cable for the same strength. Plasma® Fiber is a specially processed High Molecular Weight Polyethylene (HMPE), with exceptional strength properties and is commonly used in critical lifting applications. Around the core of the cable is a Twaron®fiber braid. Twaron® is an Aramid fiber used in fire protection, cut-resistant gloves, crash pads, automotive brake pads, etc. This specialized shielding provides exceptional cut protection, abrasion protection and heat resistance to the fiber core. A semi-rigid, polyurethane extrusion covers both the Plasma® core and Twaron® shielding to provide resistance to water, chemicals, debris, etc. It also serves as the primary cut and abrasion barrier.
3. What material are the fittings made of?
End fittings are a combination of high performance aircraft grade aluminum with heat treated steel hardware.
4. How strong is the cable?
The cables are designed to meet or exceed the strength of the 1.50” and 1.25” steel wire used by factory trucks. The tie-back cable is available in 23 ton rated capacity and 15 ton rated capacity with a 5 to 1 safety factor.
5. What lengths are available?
Cable length is custom ordered based on the truck model and bed combinations. Typical tie-back lengths range from 70” to 130”. Because not all truck models have the same beds, it is important to confirm the desired length when ordering.
6. What truck models do they fit?
The cables are purposed engineered as a direct replacement for body up cables utilized on Caterpillar, Komatsu, Liebherr, Hitachi, Bucyrus, and Belaz haul truck models.
7. How are the cable ends terminated in the fittings?
Applied Fiber uses an advanced resin infusion process that bonds the fibers to the metal hardware (patents issued and pending). The primary advantage of this technology for tiebacks is quality control and reliable performance. Applied Fiber is the global leader for terminated synthetic fiber systems, with products across many performance-based industries and applications. See www.applied-fiber.com for additional information.
8. How does this cable compare with a steel cable or synthetic fiber sling and shackle combination?
The cables are designed to overcome traditional safety and reliability drawbacks of wire and synthetic fiber slings. See www.haultrucktiebacks.com/overview for a brief summary and www.haultrucktiebacks.com/advantages for a more detailed overview of the unique advantages around improved safety and reliability.