Mechanical translation is a category, not a single mechanism. Choosing how to deliver it depends on the load, stroke, accuracy, and duty cycle. The comparison below covers the three drives we get asked about most often: a lead-screw stage, a belt-driven gantry, and a hydraulic. Google's service, offered free of charge, instantly translates words, phrases, and web pages between English and over 100 other languages. It solves the problem of converting a power source — usually rotating — into controlled straight-line displacement of a load. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. Safe working load (SWL) is the maximum load which can be applied safely during normal cable management use. There are three. Hubbell's NEXTFRAME® Ladder Tray is the effective and widely used cable runway that supports and delivers bundles of cable between cabinets, racks, and closets, along walls, and suspended from ceilings. The Ladder Tray features light, rugged, tubular steel construction.