Castors that make a trolley drift can have problems in the swivel bearing, wheel-bearing, wheel runout, mounting, load distribution, or floor conditions. This guide shows buyers how to separate these causes, test the complete trolley under realistic load, and record clear acceptance limits before bulk approval.

Rubber castor wheels can break under repeated load when tread variation, poor rim fit, weak retention, impact, or unsuitable test conditions allow movement and tearing. This article explains the main failure paths and gives buyers a practical checklist for wheel construction, interface dimensions, sample inspection, dynamic testing, and supplier questions before approval.

Choosing a braked castor requires more than confirming that a brake is fitted. Buyers should define how easily the pedal operates, whether the wheel stops, and whether the swivel head remains locked. This guide explains a practical specification and test framework for comparing complete castor assemblies before approval, without relying on vague terms such as “tight brake”.