Dock Leveler Selection Calculator

This calculator recommends a dock leveler's capacity, drive type, and dimensions from how it will actually be loaded and used. Required Capacity comes from Dynamic Load -- the forklift's unladen weight plus its Max Load Weight, since both are on the leveler plate at once during a crossing -- rounded up to the nearest standard manufacturer capacity tier (25,000 / 35,000 / 45,000 / 60,000 / 80,000 lb). Rounding up rather than down matters: a leveler rated below the actual dynamic load is a structural safety hazard, so this calculator always selects the next tier that can support the full load with margin, never the nearest one. Type is chosen from Cycles per Day, the number of times a forklift crosses the leveler in a typical day: fewer than 30 cycles suits a simple mechanical leveler (spring-loaded, no hydraulics to maintain), 30-100 cycles justifies a hydraulic leveler for smoother, faster operation and less physical wear on staff, and more than 100 cycles points to an air-powered leveler built for continuous high-frequency use.

Recommended Width steps up from a 6ft standard to 6.5ft once Dynamic Load exceeds 50,000 lb, accommodating wider forklift wheelbases used for heavier loads. Lip Length is not calculated from your inputs -- it reports the 12in dry-van standard, since none of the four inputs identifies the trailer type that actually drives it; refrigerated trailers typically need a 16in lip and intermodal containers 18in. Min/Max Operating Height give the serviceable trailer-bed height range around your Dock Height -- a standard leveler typically services roughly 5 inches above and below the dock floor, so a trailer bed outside that band may need a leveler with an extended range or dock-leveling equipment beyond a standard unit. These are engineering starting points for spec'ing equipment, not a substitute for the manufacturer's certified load rating plate.