Search for proveedores de cintas transportadoras and you get lists: a supplier directory with a hundred names, a top ten ranking, a handful of integrator pages. None tells you which of those suppliers can hold the specification you need. This guide works on the question the lists leave open. It compares the two sourcing channels behind most of those names, a remote belt factory and a local stockist, across the things that decide total cost: lead time, minimum order quantity, stock availability, freedom to specify, technical support during commissioning, and who carries the cost when the line stops. It marks the jobs that genuinely have to go to a factory, such as non-standard widths and multi-batch consistency, and the jobs where a local stockist wins, such as breakdown repairs and small drops, then sets out a hybrid policy.

Sizing a conveyor belt steel cord installation is a sequence, not a grade lookup. This guide runs the eight steps in the order a project actually needs them: collect the duty data that gets forgotten, calculate the running and starting tension properly, choose the ST class from that tension with a safety factor rather than from habit, fix width and cover from the material and the loading point, then set splice length, pulley diameters and take-up travel from the result. The last two steps cost money when skipped: check the drive and the start-up case against the belt you just specified, then issue a specification sheet that a supplier can actually be held to. Two worked cases run alongside the text: one where starting tension exceeded the design figure, one where take-up travel ran out in six months. Tables cover the duty data to collect, the tension to ST decision, the dimensional constraint chain, pulley and take-up figures, and the final acceptance checks.