Track levelling is the single most important engineering discipline in any mobile shelving relocation. Get it wrong by 2mm and the system runs heavy at one end of the aisle. Here is what tolerance, tools and tests actually look like.
Why ±1mm matters
Mobile shelving rolls on small-diameter bearings. A 2mm cross-track variation translates into 6–8kg of extra hand-wheel effort — above manufacturer spec. Over time, bearings wear unevenly and the system jams.
How it's measured
Digital straight-edge across the track footprint, recorded every 500mm. Sub-floor readings recorded on a level test sheet retained with the project file.
What out-of-tolerance means
Two options: shim the tracks (acceptable for ≤3mm), or apply self-levelling compound to the sub-floor (required for >3mm). We always price the worst-case in the original quote.
How it's tested at sign-off
Empty carriages run end-to-end on hand effort alone. Any aisle requiring assistance from a second engineer fails the test and the track is re-shimmed before PUWER.