然而,在天軌和地軌的安裝公差符合《Basis of calculations for storage and retrieval machines - Tolerances, deformations and clearances in the storage systems Part 1: General, Single deep and Double deep Beam Pallet racking》FEM 9.831-1或《Basis of calculations for S/R machines, tolerances, deformations and clearances in automatic small parts warehouses(not silo design)》FEM 9.832、天軌側導輪的裝配質量和磨損限制符合堆垛機供應商的技術規范的情況下,可以假定貨架結構的阻尼性足以防止存儲單元在振動下發生移動。因此保證貨架的安裝精度與質量,是實現設計功能的基礎前提。